Asme B16.48
Asme B16.48
Asme B16.48
48-2005
(Revision of ASME B16.48-1997)
Line Blanks
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A N A M E R I C A N N AT I O N A L STA N DA R D
Line Blanks
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A N A M E R I C A N N AT I O N A L S TA N D A R D
The next edition of this Standard is scheduled for publication in 2010. There will be no addenda or
written interpretations of the requirements of this Standard issued to this edition.
This code or standard was developed under procedures accredited as meeting the criteria for American National
Standards. The Standards Committee that approved the code or standard was balanced to ensure that individuals from
competent and concerned interests have had an opportunity to participate. The proposed code or standard was made
available for public review and comment that provides an opportunity for additional public input from industry, academia,
regulatory agencies, and the public-at-large.
ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
ASME does not take any position with respect to the validity of any patent rights asserted in connection with any
items mentioned in this document and does not undertake to insure anyone utilizing a standard against liability for
infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly
advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is
entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as
government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established
ASME procedures and policies, which precludes the issuance of interpretations by individuals.
Copyright © 2006 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved
Printed in U.S.A.
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Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Pressure-Temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
7 Paddle Blank and Spacer Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
8 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure
1 Line Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Tables
1 Dimensions of Class 150 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Dimensions of Class 300 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Dimensions of Class 600 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Dimensions of Class 900 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Dimensions of Class 1500 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Dimensions of Class 2500 Raised Face Figure-8 Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Dimensions of Class 150 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . . 10
8 Dimensions of Class 300 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . . 11
9 Dimensions of Class 600 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . . 12
10 Dimensions of Class 900 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . . 13
11 Dimensions of Class 1500 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . 14
12 Dimensions of Class 2500 Female Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . . . 15
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13 Dimensions of Class 150 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . 16
14 Dimensions of Class 300 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . 17
15 Dimensions of Class 600 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . 18
16 Dimensions of Class 900 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . . 19
17 Dimensions of Class 1500 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . 20
18 Dimensions of Class 2500 Male Oval Ring-Joint Facing Figure-8 Blanks . . . . . . . . . . . . . 21
Nonmandatory Appendices
A Dimensional Data for Line Blanks in U.S. Customary Units . . . . . . . . . . . . . . . . . . . . . . . . 22
B References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
C Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
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FOREWORD
In July 1993, the ASME B16 Committee gave to its Subcommittee C the assignment to convert
the API 590 Steel Line Blanks Standard into an ASME standard. The American Petroleum Institute
no longer publishes the API 590 Standard.
These line blanks were designed in accordance with the rules of the ASME B31.3-2002 edition.
Materials and relevant footnotes have been added following the ASME format.
Significant additions made to this 2005 edition include reference to the use of all materials
listed in B16.5 Table 1-A plus Metric units. The added materials of construction include additions
to classes of alloy steels, stainless steels, and nickel alloys. This edition has also been metricated
over previous editions to include both U.S. Customary units (in parenthesis) and Metric units in
the text, Metric units in dimensional tables in the body, and U.S. Customary units in dimensional
tables in Nonmandatory Annex A.
All requests for interpretations or suggestions for revisions should be sent to the Secretary,
B16 Committee, The American Society of Mechanical Engineers, Three Park Avenue, New York,
NY 10016-5990.
The B16 Committee operates under procedures accredited by the American National Standards
Institute (ANSI). Following approval by the Standards Committee and ASME, this revision to
the 1997 edition was approved as an American National Standard by ANSI on September 19,
2005 with the designation ASME B16.48-2005.
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ASME B16 COMMITTEE
Standardization of Valves,
Flanges, Fittings, and Gaskets
(The following is the roster of the Committee at the time of approval of this Standard.)
OFFICERS
W. N. McLean, Chair
R. A. Schmidt, Vice Chair
C. Artibee, Secretary
COMMITTEE PERSONNEL
R. W. Barnes, Anric Enterprises, Inc. W. N. McLean, Newco Valves
W. B. Bedesem, ExxonMobil Research and Engineering Co. T. A. McMahon, Fisher Controls International, Inc.
M. A. Clark, Nibco, Inc. M. L. Nayyar, Bechtel Power Corp.
C. E. Floren, Mueller Co. J. D. Page, U.S. Regulatory Commission
D. R. Frikken, Becht Engineering Co. P. A. Reddington, The American Society of Mechanical Engineers
G. G. Grills, U.S. Coast Guard R. A. Schmidt, Trinity-ladish
A. Hamilton, ABS Americas H. R. Sonderegger, Anvil International, Inc.
M. L. Henderson, Forgital USA W. M. Stephan, Flexitallic LP
G. A. Jolly, Vogt Valves/Flowserve T. F. Stroud, Ductile Iron Pipe Research Association
M. Katcher, Haynes International R. E. White, Richard E. White & Associates PC
R. Koester, Honorary Member D. A. Williams, Southern Company Services
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SUBCOMMITTEE C
D. R. Frikken, Chair, Becht Engineering Co. R. Koester, Honorary Member
C. Artibee, Secretary, The American Society of Mechanical W. N. McLean, Newco Valves
Engineers M. L. Nayyar, Bechtel Power Corp.
V. C. Bhasin, Sigmatech R. A. Schmidt, Trinity-ladish
G. D. Conlee, Consultant D. L. Shira, Taylor Forge
W. C. Farrell, Jr., Consultant J. C. Thompson, Milwaukee Valve
M. L. Henderson, Coffer Corp. L. A. Willis, Dow Chemical Co.
R. E. Johnson, Flowline Division
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ASME B16.48-2005
LINE BLANKS
regarded separately as standard. Within the text, the 2.2 Pressure-Temperature Ratings
U.S. Customary units are shown in parenthesis or sepa- 2.2.1 Ratings. Ratings are the maximum allowable
rate tables. Refer to Nonmandatory Appendix A. The working gage pressure at the temperature shown in
values stated in each system are not exact equivalents; Tables 2 and F-2 of ASME B16.5 for the appropriate
therefore, it is required that each system of units be used material and pressure class. For intermediate tempera-
independently of the other. Combining values from the tures, linear interpolation between temperatures within
two systems constitutes nonconformance with the Stan- a pressure class is permitted by ASME B16.5.
dard. Nonmandatory Appendix A provides dimensions
in U.S. Customary units. 2.2.2 System Pressure Testing. Line blanks may be
subjected to system tests at a pressure not to exceed
1.6 Convention 1.5 times the 38°C (100°F) rating rounded off to the next
For the purpose of determining conformance with higher 1 bar (25 psi) increment. Testing at any higher
this Standard, the convention for fixing significant digits pressure is the responsibility of the user, taking into
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ASME B16.48-2005 LINE BLANKS
4 DIMENSIONS
4.1 General
Paddle Spacer
Dimensions shall be in accordance with Tables 1
through 18 (Tables A-1 through A-18 of Nonmandatory
Fig. 1 Line Blanks Appendix A).
4.2 Tolerances
account the requirements of the applicable code or 4.2.1 Facing Tolerances. Tolerances for facings shall
regulation. be in accordance with ASME B16.5.
2.2.3 Mixed Material Joints. Should either the two 4.2.2 Thickness Tolerances. Thickness tolerances are
flanges or the line blank in a flanged line blank assembly NPS 18 and smaller −zero + 3.0 mm (0.12 in.)
not have the same pressure-temperature rating, the rat- NPS 20 and larger −zero + 4.8 mm (0.19 in.)
ing of the assembled joint at any temperature shall be
the lower of the flange or line blank rating at that temper- 4.3 Openings
ature.
(a) For NPS 1⁄2, NPS 3⁄4, and NPS 1 blanks in all raised
face classes, the inside diameter is equal to standard
3 DESIGN weight welding neck flange bore.
(b) For NPS 11⁄4 and larger blanks in Classes 150 and
3.1 Handle
300 raised face, the inside diameter is equal to the pipe
The handle or web (tie bar) may be integral or attached outside diameter.
to the line blank or spacer. The web and its attachment (c) For NPS 11⁄4 and larger blanks in Classes 600 and
shall be capable of supporting the weight of the blank 900 raised face, the inside diameter is equal to
or spacer in all orientations without permanent defor- Schedule 10S welding neck flange bore.
mation to the web. (d) For Class 1500 raised face blanks, the inside diam-
eter is equal to Schedule 40 welding neck flange bore.
3.2 Edge Preparation
(e) For Class 2500 raised face blanks, the inside diame-
Finished surfaces shall be free of projections that ter is equal to Schedule 40 through NPS 6, Schedule 60
would interfere with gasket seating. for NPS 8 and NPS 10, and Schedule 80 for NPS 12.
(f) For all ring-joint blanks, the inside diameter is
3.3 Facing equal to the pipe outside diameter.
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3.3.1 Raised Face Joint Blanks. The gasket seating (g) Dimensions are based upon concentric installation
surface finish and dimensions for raised face line blanks of spiral wound gaskets with inner rings as required by
shall be in accordance with ASME B16.5. A raised face ASME B16.20 and conform to the maximum permitted
may be specified at the option of the purchaser. The bore of ASME B16.5 welding neck flanges described in
height of the raised faces shall be in addition to the Table 16 of ASME B16.20.
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LINE BLANKS ASME B16.48-2005
4.4 Facing Finish (c) The B16 designation may be applied only when
Facing finish shall be in accordance with ASME B16.5, the line blank has been manufactured in full confor-
para. 6.4.5. mance with this Standard.
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-1 in
Nonmandatory Appendix A.
NOTES:
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(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
4
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LINE BLANKS ASME B16.48-2005
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-2 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-3 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
6
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[Note (1)]
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[Note (2)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-4 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
t
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[Note (2)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-5 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
8
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LINE BLANKS ASME B16.48-2005
[Note (1)]
[Note (2)]
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Table 6 Dimensions of Class 2500 Raised Face Figure-8 Blanks
Inside Outside Centerline
Diameter, B, Diameter, O, Dimension, A, Thickness, t, Web Width, W,
NPS mm mm mm mm mm
1
⁄2 16 67 90 9.7 38
3
⁄4 21 73 95 9.7 41
1 27 83 110 9.7 64
11⁄4 35 102 130 12.7 64
11⁄2 41 114 145 15.7 70
2 53 143 170 15.7 70
21⁄2 63 165 195 19.1 76
3 78 194 230 22.4 76
4 102 232 275 28.4 89
5 128 276 325 35.1 89
6 154 314 370 41.1 89
8 198 384 440 53.8 102
10 248 473 540 66.5 114
12 289 546 620 79.2 114
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-6 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
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ASME B16.48-2005 LINE BLANKS
[Note (2)]
A
B Wt
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O O
[Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-7 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
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LINE BLANKS ASME B16.48-2005
[Note (2)]
A
B Wt
O O
[Note (3)]
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1
⁄2 21 51 65 15.7 38
3
⁄4 27 64 80 19.1 45
1 34 70 90 19.1 51
11⁄4 42 79 100 22.4 51
11⁄2 48 90 115 22.4 57
2 61 108 125 25.4 57
21⁄2 73 127 150 28.4 57
3 89 146 170 28.4 57
31⁄2 102 159 185 28.4 64
4 114 175 200 31.8 64
5 141 210 235 35.1 70
6 168 241 270 35.1 83
8 219 302 330 41.1 95
10 273 356 385 44.5 102
12 324 413 450 50.8 121
14 356 457 515 53.8 127
16 406 508 570 57.2 127
18 457 575 630 60.5 127
20 508 635 685 69.9 127
24 610 749 810 79.2 152
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-8 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
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ASME B16.48-2005 LINE BLANKS
[Note (2)]
A
B Wt
O O
[Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-9 in
Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
12
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[Note (2)]
A
B Wt
O O
[Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-10
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
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ASME B16.48-2005 LINE BLANKS
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W
[Note (2)]
A
B Wt
O O
[Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-11
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
14
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LINE BLANKS ASME B16.48-2005
[Note (2)]
A
B Wt
O O
[Note (3)]
NPS mm mm mm mm mm
1
⁄2 21 65 90 25.4 38
3
⁄4 27 73 95 28.4 45
1 34 83 110 28.4 54
11⁄4 42 102 130 35.1 54
11⁄2 48 114 145 38.1 61
2 61 133 170 41.1 57
21⁄2 73 149 195 47.8 61
3 89 168 230 50.8 76
4 114 203 270 63.5 83
5 141 241 325 73.2 89
6 168 279 370 82.6 95
8 219 340 440 98.6 95
10 273 425 540 117.3 91
12 324 495 620 133.4 152
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-12
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
15
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-13
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
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--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
LINE BLANKS ASME B16.48-2005
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-14
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
17
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-15
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
18
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LINE BLANKS ASME B16.48-2005
[Note (1)]
T /2
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-16
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
19
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ASME B16.48-2005 LINE BLANKS
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-17
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
20
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LINE BLANKS ASME B16.48-2005
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in millimeters. For inch dimensions, refer to corresponding Table A-18
in Nonmandatory Appendix A.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
21
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ASME B16.48-2005
NONMANDATORY APPENDIX A
DIMENSIONAL DATA FOR LINE BLANKS IN
U.S. CUSTOMARY UNITS
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 1.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 2.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`--- 24
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 3.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
25
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 4.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
26
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
[Note (1)]
[Note (2)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
2 2.07 5.50 6.50 0.50 2.75
21⁄2 2.47 6.38 7.50 0.62 3.00
3 3.07 6.75 8.00 0.75 3.00
4 4.03 8.12 9.50 0.88 3.50
5 5.05 9.88 11.50 1.12 3.50
6 6.06 11.00 12.50 1.38 3.50
8 7.98 13.75 15.50 1.62 4.00
10 10.02 17.00 19.00 2.00 4.50
12 11.94 20.38 22.50 2.38 4.50
14 13.12 22.62 25.00 2.62 5.00
16 15.00 25.12 27.75 3.00 5.25
18 16.88 27.62 30.50 3.38 5.75
20 18.81 29.62 32.75 3.75 6.00
24 22.62 35.38 39.00 4.38 7.00
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 5.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
27
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (1)]
[Note (2)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 6.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
(3) Refer to para. 3.3.1.
28
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (2)]
A
B Wt
O O
[Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 7.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
29
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (2)]
A
B Wt
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
O O
[Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 8.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
30
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (2)]
A
B Wt
O O
[Note (3)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
3 3.50 5.75 6.62 1.25 2.25
31⁄2 4.00 6.25 7.25 1.38 2.50
4 4.50 6.88 8.50 1.38 2.50
5 5.56 8.25 10.50 1.50 2.75
6 6.62 9.50 11.50 1.75 3.25
8 8.62 11.88 13.75 2.00 3.75
10 10.75 14.00 17.00 2.25 4.00
12 12.75 16.25 19.25 2.50 4.75
14 14.00 18.00 20.75 2.62 5.00
16 16.00 20.00 23.75 2.88 5.00
18 18.00 22.62 25.75 3.12 5.00
20 20.00 25.00 28.50 3.50 5.00
24 24.00 29.50 33.00 4.12 6.00
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 9.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
31
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (2)]
A
B Wt
O O
[Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 10.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
32
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
[Note (2)]
A
B Wt
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
O O
[Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 11.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
33
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (2)]
A
B Wt
O O
[Note (3)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
3 3.50 6.62 9.00 2.00 3.00
4 4.50 8.00 10.75 2.50 3.25
5 5.56 9.50 12.75 2.88 3.50
6 6.62 11.00 14.50 3.25 3.75
8 8.62 13.38 17.25 3.88 3.75
10 10.75 16.75 21.25 4.62 3.58
12 12.75 19.50 24.38 5.25 6.00
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 12.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
34
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 13.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
Diameter, B, Dimension, A, Thickness, t, Web Width, W,
NPS in. in. in. in.
1
⁄2 0.84 2.62 0.25 1.50
3
⁄4 1.05 3.25 0.38 1.75
1 1.32 3.50 0.38 2.00
11⁄4 1.66 3.88 0.38 2.00
11⁄2 1.90 4.50 0.38 2.25
2 2.38 5.00 0.50 2.25
21⁄2 2.88 5.88 0.62 2.25
3 3.50 6.62 0.62 2.25
31⁄2 4.00 7.25 0.75 2.50
4 4.50 7.88 0.62 2.50
5 5.56 9.25 0.75 3.00
6 6.62 10.62 0.88 3.25
8 8.62 13.00 1.00 3.75
10 10.75 15.25 1.12 4.00
12 12.75 17.75 1.38 4.75
14 14.00 20.25 1.50 5.00
16 16.00 22.50 1.62 5.00
18 18.00 24.75 1.75 5.00
20 20.00 27.00 2.00 5.00
24 24.00 32.00 2.25 6.00
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 14.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
36
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NONMANDATORY APPENDIX A ASME B16.48-2005
[Note (1)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 15.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
37
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (1)]
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 16.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
38
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
[Note (1)]
T/
2
W
[Note (2)]
A
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 17.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
39
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ASME B16.48-2005 NONMANDATORY APPENDIX A
[Note (1)]
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
T/
2
W
[Note (2)]
A
Wt
Th
t
B [Note (3)]
GENERAL NOTE: Dimensions are in inches. For millimeter dimensions, refer to corresponding Table 18.
NOTES:
(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located
such that it will not interfere with bolting between two flanges.
(2) Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th p T + t, where T is
the ring height specified in ASME B16.20.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1.
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ASME B16.48-2005
NONMANDATORY APPENDIX B
REFERENCES
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
The following is a list of publications referenced in ISO 6708: 1995, Pipework Components — Definitions
this Standard. and Selection of DN (Nominal Size)
ISO 9000: 2000, Quality Management Systems — Funda-
ASME B16.5-2003, Pipe Flanges and Flanged Fittings
mentals and Vocabulary
ASME B16.20-1998, Metallic Gaskets for Pipe Flanges — IS0 9001: 2000, Quality Management Systems — Model
Ring-Joint, Spiral-Wound, and Jacketed Requirements
ASME B46.1-2002, Surface Texture (Surface Roughness, IS0 9003: 2000, Quality Systems — Model for Quality
Waviness, and Lay) Assurance in Final Inspection and Test
Publisher: The American Society of Mechanical Engi- ISO 9004: 2000, Quality Management Systems — Guide-
neers (ASME), Three Park Avenue, New York, NY lines for Performance Improvements
10016/5990; Order Department: 22 Law Drive, P.O. Publisher: International Organization for Standardiza-
Box 2300, Fairfield, NJ 07007-2300 tion (ISO), 1 rue de Varembé, Case Postale 56, CH-
ASTM E 29-1993a (1999), Using Significant Digits in Test 1211, Genève 20, Switzerland/Suisse
Data to Determine Conformance with Specifications Publications appearing above which have been
Publisher: American Society for Testing and Materials approved as American National Standards may also be
(ASTM), 100 Barr Harbor Drive, West Conshohocken, obtained from the American National Standards Insti-
PA 19428-2959 tute (ANSI), 25 West 43rd Street, New York, NY 10036.
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ASME B16.48-2005
NONMANDATORY APPENDIX C
QUALITY SYSTEM PROGRAM
--`````,`,,,`,,``,`,````,,`,``,-`-`,,`,,`,`,,`---
The products manufactured in accordance with this manufacturer’s quality system program by an indepen-
Standard shall be produced under a quality system pro- dent organization shall be the responsibility of the manu-
gram following the principles of an appropriate stan- facturer. The detailed documentation demonstrating
dard from the IS0 9000 series.1 A determination of the program compliance shall be available to the purchaser
need for registration and/or certification of the product at the manufacturer ’s facility. A written summary
description of the program utilized by the product man-
ufacturer shall be available to the purchaser upon
1
The series is also available from the American National Stan- request. The product manufacturer is defined as the
dards Institute (ANSI) and the American Society for Quality Con-
trol (ASQ) as American National Standards that are identified by
entity whose name or trademark appears on the product
a prefix “Q” replacing the prefix “ISO.” Each standard of the series in accordance with the marking or identification require-
is listed under Nonmandatory Appendix B. ments of this Standard.
42
Copyright ASME International
Provided by IHS under license with ASME Licensee=BP International/5928366101
No reproduction or networking permitted without license from IHS Not for Resale, 04/23/2007 07:16:40 MDT
ASME B16.48-2005
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J14405