Designation: A 135 – 05

Standard Specification for

Electric-Resistance-Welded Steel Pipe1
This standard is issued under the fixed designation A 135; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.

1. Scope* A 751 Test Methods, Practices, and Terminology for

1.1 This specification2 covers two grades of electric- Chemical Analysis of Steel Products
resistance-welded steel pipe in NPS 2 to NPS 30 inclusive, A 865 Specification for Threaded Couplings, Steel, Black
with nominal (average) wall thickness up to 0.500 in. (12.70 and Zinc-Coated (Galvanized) Welded or Seamless, for
mm), inclusive, and in nominal sizes NPS 3⁄4 to NPS 5 Use in Steel Pipe Joints
inclusive with nominal (average) wall thickness 0.083 in. (2.11 A 941 Terminology Relating to Steel, Stainless Steel, Re-
mm) to 0.134 in. (3.40 mm), depending on size. Pipe having lated Alloys, and Ferroalloys
other dimensions (Note 1) may be furnished provided such E 6 Terminology Relating to Methods of Mechanical Test-
pipe complies with all other requirements of this specification. ing
The pipe is intended for conveying gas, vapor, water or other E 29 Practice for Using Significant Digits in Test Data to
liquid; only Grade A is adapted for flanging and bending (Note Determine Conformance with Specifications
2). The suitability of pipe for various purposes is somewhat E 59 Practice for Sampling Steel and Iron for Determination
dependent upon its dimensions, properties, and conditions of of Chemical Composition4
service, so that the purpose for which the pipe is intended E 213 Practice for Ultrasonic Examination of Metal Pipe
should be stated in the order. The pipe may be furnished either and Tubing
nonexpanded or cold expanded at the option of the manufac- E 273 Practice for Ultrasonic Examination of the Weld
turer. When pipe is cold expanded, the amount of expansion Zone of Welded Pipe and Tubing
shall not exceed 1.5 % of the outside diameter pipe size. E 309 Practice for Eddy-Current Examination of Steel Tu-
bular Products Using Magnetic Saturation
NOTE 1—A comprehensive listing of standardized pipe dimensions is 2.2 ANSI Standard:
contained in ASME B36.10.
B1.20.1 Pipe Threads, General Purpose5
NOTE 2—This provision is not intended to prohibit the cold bending of
Grade B pipe. 2.3 Federal Standards:
Fed. STD No. 123 Marking for Shipments (Civil Agencies)6
1.2 The values stated in inch-pound units are to be regarded Fed. STD No. 183 Continuous Identification Marking of
as the standard. The SI values, given in parentheses, are for Iron and Steel Products6
information only. 2.4 Military Standards:
2. Referenced Documents MIL-STD-129 Marking for Shipment and Storage7
MIL-STD-163 Steel Mill Products, Preparation for Ship-
2.1 ASTM Standards: 3 ment and Storage7
A 370 Test Methods and Definitions for Mechanical Testing
2.5 ASME Standard:
of Steel Products
B36.10 Welded and Seamless Wrought Steel Pipe5,8
A 700 Practices for Packaging, Marking, and Loading
Methods for Steel Products for Domestic Shipment 3. Terminology
3.1 For definitions of terms relating to steel manufacturing
and properties, refer to Terminology A 941.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
4
Current edition approved March 1, 2005. Published March 2005. Originally Withdrawn.
5
approved in 1931. Last previous edition approved in 2001 as A 135 – 01. Available from American National Standards Institute, 11 West 42nd St., 13th
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Floor, New York, NY 10036.
6
cation SA-135 in Section II of that Code. Available from General Service Administration, Washington, DC 20405.
3 7
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Robbins Ave., Philadelphia, PA 19111–5094. Attn.: NOPD.
8
Standards volume information, refer to the standard’s Document Summary page on Available from ASME International, Three Park Avenue, New York, NY
the ASTM website. 10016–5990.

*A Summary of Changes section appears at the end of this standard.

Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.

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 A 135 – 05
TABLE 1 Tensile Requirements
Grade A Grade B
Tensile strength, min, ksi (MPa) 48 (331) 60 (414)
Yield strength, min, ksi (MPa) 30 (207) 35 (241)
Elongation in 2 in. (50 mm), min, %:
For pipe having a specified wall thickness of 5⁄16 in. (7.9 mm) or more, if tested using a longitudinal 35 30
strip test specimen.
A B
For pipe having a specified wall thickness of less than 5⁄16 in. (7.9 mm), if tested using a longitudinal
strip test specimen.
For pipe of any size, if tested using a full-size longitudinal test specimen. 35 30
A
The minimum elongation shall be determined by the following equation, with the calculated value rounded to the nearest percent:
E 5 56t 1 16.5

where:
E = elongation in 2 in. (50 mm), minimum, %, and
t = specified wall thickness, in.
B
The minimum elongation shall be determined by the following equation, with the calculated value rounded to the nearest percent:
E 5 48t 1 14

where:
E = elongation in 2 in. (50 mm), minimum, %, and
t = specified wall thickness, in.

3.2 For definitions of terms relating to mechanical testing, cation of the resultant transition material is required. The
refer to Terminology E 6. producer shall remove the transition material by any estab-
3.3 Definitions of Terms Specific to This Standard: lished procedure that positively separates the grades.
3.3.1 burr, n—a rough or sharp edge left on pipe ends by 5.3 The pipe shall be manufactured from flat rolled steel in
cutting or sawing. individual lengths or in continuous length by electric-resistance
3.3.2 lot, n—all pipe of the same size, wall thickness and or electric-induction welding without the addition of extrane-
rolled length that is produced from the same heat of steel and ous material.
subject to the same heat treatment. 5.4 The weld seam of electric-resistance welded pipe to
3.3.3 black thread, n—a thread crease exhibiting the origi- Grade B pipe shall be heat treated after welding to a minimum
nal pipe surface after machining. temperature of 1000 °F (540 °C) or processed in such a manner
that no untempered martensite remains.
4. Ordering Information
4.1 Orders for material under this specification should 6. Chemical Composition
include the following, as required, to describe the desired 6.1 The steel shall conform to the requirements prescribed
material adequately: in Table 2, based on the heat analysis. When specified in the
4.1.1 Quantity (feet or number of lengths), order, the heat analyses shall be reported to the purchaser or a
4.1.2 Name of material (electric-resistance-welded pipe), representative of the purchaser.
4.1.3 Specification designation and year of issue,
4.1.4 Grade (see Table 1), 7. Product Analysis
4.1.5 Size (nominal size, or outside diameter; and nominal
wall thickness), 7.1 An analysis may be made by the purchaser on samples
4.1.6 Length (specific or random, see 12.4), of pipe selected at random and shall conform to the require-
4.1.7 End finish (plain or threaded, see 13.2), ments specified in Table 2. Methods and Practices relating to
4.1.7.1 Threaded and coupled, if specified, chemical analysis shall be in accordance with Test Method,
4.1.7.2 Threads only, if specified, Practices, and Terminology A 751.
4.1.7.3 Plain end, if specified,
4.1.8 Alternative electric test (see Section 11), 8. Mechanical Properties Requirements
4.1.9 Tension test specimen (see Section 15), 8.1 Tensile Properties:
4.1.10 Heat analysis, if required (see 6.1), 8.1.1 The material shall conform to the requirements as to
4.1.11 Certificate of compliance, if required (see Section tensile properties prescribed in Table 1.
19), and 8.1.2 The yield strength shall be determined by the offset
4.1.12 Special requirements. method utilizing 0.2 % of the gage length or by the total
extension under load method using 0.5 % of the gage length.
5. Manufacture 8.1.3 Longitudinal test specimens shall be full-size longitu-
5.1 The steel shall be made by either or both of the dinal test specimens (see Figure A2.1 of Test Methods and
following processes: basic-oxygen or electric-furnace. Definitions A 370) or longitudinal strip test specimens (see
5.2 Steel may be cast in ingots or may be strand cast. When Specimen No. 4 in Fig. A2.3 of Test Methods and Definitions
steels of different grades are sequentially strand cast, identifi- A 370).

2
 A 135 – 05
TABLE 2 Chemical Requirements S = allowable fiber stress 18 000 psi (124 MPa) for Grade
Composition, max, % A and 21 000 psi (144 MPa) for Grade B. This does
Element Grade A Grade B not prohibit testing at higher pressure at the manufac-
Carbon 0.25 0.30 turer’s option,
Manganese 0.95 1.20 t = specified wall thickness, in., and
Phosphorus 0.035 0.035 D = specified outside diameter, in.
Sulfur 0.035 0.035

Plain end pipe may be tested at the discretion of the

manufacturer in single lengths or in multiple lengths.
8.2 The test specimen taken across the weld shall show a
10.2 The hydrostatic pressure shall be maintained for not
tensile strength not less than the minimum tensile strength
less than 5 s.
specified for the grade of pipe ordered. This test will not be
10.3 When specified in the order, pipe may be furnished
required for pipe under NPS 8.
without hydrostatic testing, and each length so furnished shall
9. Flattening Test include with the mandatory marking the letters “NH.”
9.1 A specimen at least 4 in. (102 mm) in length shall be NOTE 3—This provision is not intended to apply to light wall (Schedule
flattened cold between parallel plates in three steps with the 10) pipe listed in Table X1.1.
weld located either 0° or 90° from the line of direction of force 10.4 When certification is required by the purchaser and the
as required in 9.2. During the first step, which is a test for hydrostatic test has been omitted, the certification shall clearly
ductility of the weld, no cracks or breaks on the inside or state “Not Hydrostatically Tested.” The specification number
outside surfaces shall occur until the distance between the and material grade, as shown on the certification, shall be
plates is less than two thirds of the original outside diameter of followed by the letters “NH.”
the pipe. As a second step, the flattening shall be continued.
During the second step, which is a test for ductility exclusive 11. Nondestructive Examination Requirements
of the weld, no cracks or breaks on the inside or outside 11.1 As an alternate to the hydrostatic test, and when
surfaces shall occur until the distance between the plates is less accepted by the purchaser, each pipe shall be tested with a
than one third of the original outside diameter of the pipe but nondestructive electric test in accordance with Practice E 213,
is not less than five times the wall thickness of the pipe. During Practice E 273, or Practice E 309. It is the intent of this test to
the third step, which is a test for soundness, the flattening shall reject pipe containing defects.
be continued until the specimen breaks or the opposite walls of 11.2 Recognized methods for meeting this test are electro-
the pipe meet. Evidence of laminated or unsound material or of magnetic (eddy current) or ultrasonic.
incomplete weld that is revealed during the entire flattening test 11.3 The following information is for the benefit of the user
shall be cause for rejection. of this specification:
9.2 For pipe produced in single lengths, the flattening test 11.3.1 The ultrasonic examination referred to in this speci-
specified in 9.1 shall be made on both crop ends cut from each fication is intended to detect longitudinal imperfections having
length of pipe. The tests from each end shall be made a reflective area similar to or larger than the reference notch.
alternately with the weld at 0° and at 90° from the line of The examination may not detect circumferentially oriented
direction of force. For pipe produced in multiple lengths, the imperfections of short, deep imperfections.
flattening test shall be made on crop ends representing the front 11.3.2 The eddy-current examination referenced in this
and back of each coil with the weld at 90° from the line of specification has the capability of detecting significant imper-
direction of force, and on two intermediate rings representing fections, especially of the short, abrupt type.
each coil with the weld 0° from the line of direction of force. 11.3.3 The hydrostatic test referred to in Section 10 is a test
9.3 Surface imperfections in the test specimen before flat- method provided for in many product specifications. This test
tening, but revealed during the first step of the flattening test, has the capability of finding imperfections of a size permitting
shall be judged in accordance with the finish requirements in the test fluid to leak through the tube wall and may be either
Section 13. visually seen or detected by a loss of pressure. This test may
9.4 Superficial cracks as a result of surface imperfections not detect very tight, through-the-wall imperfections or imper-
shall not be cause for rejection. fections that extend an appreciable distance into the wall
without complete penetration.
10. Hydrostatic Test
11.3.4 A purchaser interested in ascertaining the nature
10.1 Except as provided for in 10.3, each length of pipe (type, size, location, and orientation) of imperfections that can
shall be hydrostatically tested at the mill, without leakage be detected in the specific application of these examinations
through the wall, to a pressure calculated from the following should discuss this with the manufacturer of the tubular
Eq 1: product.
P 5 2St/D (1) 11.4 In order to accommodate the various types of nonde-
structive electric testing equipment and techniques in use, the
where: calibration pipe shall contain, at the option of the producer, any
P = minimum hydrostatic test pressure, psi, (MPa). The
one or more of the following discontinuities to establish a
test pressure need not exceed 2500 psi (17.24 MPa),
minimum sensitivity level for rejection:

3
 A 135 – 05
11.4.1 Drilled Hole—A hole not larger than 0.031-in. (0.8- 13.2.1 Schedule 10 Pipe—Pipe furnished to Schedule 10
mm) diameter shall be drilled radially and completely through shall be plain end only. All inside and outside cutting burrs
pipe wall, preferably in the weld area, care being taken to avoid shall be removed. This generally involves breaking the corners.
distortion of the pipe while drilling. 13.2.2 Ends, Plain End Pipe—Unless otherwise specified,
11.4.2 Transverse Tangential Notch—A notch shall be filed plain end pipe for use with the Dresser or Dayton type coupling
or milled tangential to the surface and transverse to the shall be reamed both outside and inside sufficiently to remove
longitudinal axis of the pipe preferably in the weld area. Said all burrs. Plain end pipe for welding shall be beveled on the
notch shall have a depth not exceeding 12.5 % of the nominal outside to an angle of 30° with a tolerance of + 5° and – 0° and
wall thickness of the pipe or 0.004 in., (0.10 mm), whichever with a width of flat at the end of the pipe of 1⁄16 +/– 1⁄32 in. (1.6
is greater. +/– 0.8 mm). When material is ordered beveled to any other
11.4.3 Longitudinal Notch—A notch 0.031 in. (0.8 mm) or than a 30° angle, it should be understood that the angle is to be
less in width shall be machined in a radial plane parallel to the measured from a line drawn perpendicular to the axis of the
pipe axis on the outside surface of the pipe preferably in the pipe. This means that a greater amount of material is removed
weld area, to have a depth not exceeding 12.5 % of the nominal with a 60° angle than with a 30° angle. Pipe shall be
wall thickness of the pipe or 0.004 in. (0.10 mm), whichever is sufficiently free from indentations, projections, or roll marks
greater. for a distance of 8 in. (203 mm) from the end of the pipe to
11.5 Pipe producing a signal equal to or greater than the make a tight joint with the rubber gasket type of coupling. All
calibration imperfection shall be rejected. plain end pipe intended for Dresser or Dayton type joints or for
welding, sizes NPS 10 and smaller in outside diameter speci-
12. Dimensions, Weight, and Permissible Variations fied, shall be not more than 1⁄32 in. (0.8 mm) smaller than the
outside diameter specified for a distance of 8 in. (203 mm)
12.1 Weight—The weight of any length of pipe other than
from the ends of the pipe and shall permit the passing for a
Schedule 10 shall not vary more than 3.5 % under or 10 % over
distance of 8 in. (203 mm) of a ring gage that has a bore 1⁄16 in.
that specified, but the carload weight shall be not more than
(1.6 mm) larger than the outside diameter specified of the pipe.
1.75 % under the nominal weight. The weight of pipe furnished
Sizes larger than NPS 10 shall be not more than 1⁄32 in. (0.8
to Schedule 10 shall not vary more than 610 % from that
mm) smaller than the nominal outside diameter for a distance
calculated using the weight (mass) per unit length prescribed in
of 8 in. (203 mm) from the end of the pipe and shall permit the
Appendix Table X1.1. The weight of the pipe shall be
passing for a distance of 8 in. (203 mm) of a ring gage which
calculated from the relevant equation in ASME B36.10 and
has a bore 3⁄32 in. (2.4 mm) larger than the nominal outside
with a constant of 10.69 rather than 10.68.
diameter of the pipe.
NOTE 4—A system of standard pipe sizes has been approved by the 13.2.3 Ends, Threaded Pipe—Each end of threaded pipe
American National Standards Institute as American National Standard for shall be reamed to remove all burrs. All threads shall be in
Welded and Seamless Wrought Steel Pipe (ASME B36.10).
accordance with the American National Standard Pipe Threads
12.2 Diameter—The outside diameter shall not vary more (Note 6) and cut so as to make a tight joint when the pipe is
than 61 % from the nominal size specified. tested at the mill to the specified internal hydrostatic pressure.
12.3 Minimum Wall Thickness—The minimum wall thick- The variation from the standard, when tested with the standard
ness at any point shall be not more than 12.5 % under the working gage, shall not exceed one and one-half turns either
specified wall thickness. way. Pipe shall not be rounded by hammering in order to get a
full thread. There shall be not more than two black threads for
NOTE 5—The minimum wall thickness on inspection is shown in Table 3⁄4-in. (19.0-mm) taper among the perfect threads. Black
X1.2 of the Appendix.
threads should not be confused with imperfect threads, such as
12.4 Lengths: those torn, shaven, or broken.
12.4.1 Except as allowed in 12.4.2, pipe shall be furnished
NOTE 6—A complete description of the American National Standard
in lengths averaging 38 ft (11.6 m) or over, with a minimum Pipe Threads applicable to pipe, valves, and fittings is contained in the
length of 20 ft (6.1 m), but no more than 5 % may be under 32 American National Standard for Pipe Threads (ANSI B1.20.1); also“
ft (9.8 m). Jointers made by welding are permissible. When Screw-Thread Standards for Federal Services, 1942,” National Bureau of
threaded pipe is ordered, jointers shall be made by threaded Standards Handbook H 28, January, 1942, the pertinent data in both
connections and shall not exceed 5 % of the order. sources being identical.
12.4.2 Unless otherwise specified, Schedule 10 pipe shall be 13.3 Couplings—Each length of threaded pipe shall be
between 16 and 22 ft (4.9 and 6.7 m) for a minimum of 90 % provided with one coupling manufactured in accordance with
of the footage furnished, with any balance being shorter Specification A 865 except that the coupling may be wrought
lengths at least 8 ft (2.4 m) long. iron (Note 7). Threads shall be cut so as to make a tight joint.
Taper-tapped couplings shall be furnished on all weights of
13. Workmanship, Finish, and Appearance threaded pipe NPS 21⁄2 and larger.
13.1 The finished pipe shall be reasonably straight and free
NOTE 7—For sizes NPS 2 and smaller, it is commercial practice to
of defects. Surface inperfections in excess of 12.5 % of the furnish straight-tapped couplings for standard-weight (Schedule 40) pipe
nominal wall thickness shall be considered defects. and taper-tapped couplings for extra-strong (Schedule 80) and double-
13.2 End Finish: extra-strong pipe. If taper-tapped couplings are required for sizes NPS 2

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 A 135 – 05
and smaller on standard weight (Schedule 40) pipe, line pipe in accor- 15.4.1 Each length of pipe shall be subjected to the hydro-
dance with Specification 5L of the American Petroleum Institute should be static test specified in Section 10.
ordered, thread lengths to be in accordance with the American National
Standard for Pipe Threads (ANSI B1.20.1). Taper-tapped couplings for 16. Test, Retest, and Resampling
sizes NPS 2 and smaller in standard weight may be used on mill-threaded
standard weight type of the same size. 16.1 Chemical Analysis:
16.1.1 If the results of the analysis of either length of pipe
13.4 Protective Coating: does not conform to the requirements specified in Section 7,
13.4.1 After the pipe has been subjected to the hydrostatic analyses of two additional lengths from the same lot shall be
test, and if required by the purchaser, it shall be thoroughly made, each of which shall conform to the requirements
cleaned of all dirt, oil, grease, loose scale, and rust; then dried, specified.
and given a protective coating of the kind and in the manner 16.2 Tension Test:
specified by the purchaser. Pipe furnished to Schedule 10 shall 16.2.1 The test specimens and the tests required by this
be normally shipped with a light coating of processing oil. If so specification shall conform to those described in Test Methods
specified, the pipe can be given a mill coating or a special and Definitions A 370, except that all specimens shall be tested
coating. at room temperature.
14. Weld Repair 16.2.2 The longitudinal tension test specimen shall be taken
from the end of the pipe, or by agreement between the
14.1 Welding Repair— manufacturer and the purchaser may be taken from the skelp,
14.2 Defects in the pipe wall, provided their depth does not at a point approximately 90° from the weld, and shall not be
exceed one third the specified wall thickness, shall be repaired flattened between gage marks. The sides of each specimen shall
by electric welding. Defects in the welds such as sweats or be parallel between gage marks. At the manufacturer option,
leaks, unless otherwise specified, shall be repaired or the piece the tension test may be made on full section of pipe.
rejected at the option of the manufacturer. Repairs of this 16.2.3 Transverse weld test specimens shall be taken with
nature shall be made by completely removing the defect, the weld at the center of the specimen. Transverse body test
cleaning the cavity, and then electric welding. specimens shall be taken opposite to the weld. All transverse
14.3 All repaired pipe shall be retested hydrostatically in test specimens shall be approximately 11⁄2 in. (38.1 mm) wide
accordance with Section 10. in the gage length and shall represent the full wall thickness of
15. Sampling the pipe from which the specimen was cut.
16.2.4 If any test specimen shows defective machining or
15.1 Chemical Analysis:
develops flaws not associated with the quality of the steel or the
15.1.1 Samples for chemical analysis, except for spectro-
welding, it may be discarded and another specimen substituted.
chemical analysis, shall be taken in accordance with Practice
16.2.5 If the results of the tension tests of any lot do not
E 59. The number of samples shall be determined as follows:
conform to the requirements specified in 9.1, retests of two
NPS Numbers of Samples Selected
Under 6 2 from each lot of 400 pipes or fraction
additional lengths from the same lot shall be made, each of
thereof which shall conform to the requirements specified.
6 to 20, incl 2 from each lot of 200 pipes or fraction 16.2.6 If the percentage of elongation of any tension test
thereof
Over 20 to 30, incl 2 from each lot of 100 pipes or fraction
specimen is less than that specified in 8.1, and any part of the
thereof fracture is more than 3⁄4-in. (19.0-mm) from the center of the
gage length as indicated by scribe scratches marked on the
15.2 Tension Test:
specimen before testing, the specimen may be discarded and
15.2.1 One longitudinal tension test shall be made on length
another substituted.
(Note 8) from each lot of 400 lengths or fraction thereof of
16.3 Flattening Test:
each size under NPS 8 and one transverse body and one
16.3.1 Specimens for flattening tests shall be smooth at the
transverse weld tension test on one length from each lot of 200
ends and free from burrs.
lengths or fraction thereof of each size NPS 8 to NPS 20 and
16.3.2 If any section of the pipe fails to comply with the
on one length from each lot of 100 lengths or fraction thereof
requirements of 9.1, for pipe produced in single lengths, other
of each size over NPS 20 to NPS 30. When taken from the
sections may be cut from the same end of the same length until
skelp, the number of tests shall be determined in the same
satisfactory tests are obtained, except that the finished pipe
manner as when taken from the finished pipe.
shall not be shorter than 80 % of its length after the initial
NOTE 8—Length is defined as the length as ordered, except that in the cropping; otherwise, the length shall be rejected. For pipe
case of orders for cut lengths shorter than double random, which is defined produced in multiple lengths, retests may be cut from each end
as the length as rolled, prior to cutting to the required short lengths.
of each individual length in the multiple; such tests shall be
15.3 Flattening Test: made with the weld alternately 0° and 90° from the line of
15.3.1 The flattening test specified in 9.1 shall be made on direction of force.
both crop ends cut from each length of pipe. When pipe is 16.4 All specimens shall be tested at room temperature.
produced in multiple lengths, flattening tests are required on
the crop ends from the front and back ends of each coil and on 17. Inspection
two intermediate rings representing each coil. 17.1 The inspector representing the purchaser shall have
15.4 Hydrostatic Test: free entry, at all times while work on the contract of the

5
 A 135 – 05
purchaser is being performed, to all parts of the manufacturer’s tested and inspected in accordance with this specification
works that concern the manufacture of the material ordered. (including the year of issue) and has been found to meet the
The manufacturer shall afford the inspector, without charge, all requirements.
reasonable facilities to satisfy him that the material is being
furnished in accordance with this specification. All tests 20. Identification of Material
(except check analysis) and inspection shall be made at the 20.1 Each length of pipe shall be legibly marked with
place of manufacture prior to shipment, unless otherwise appropriate symbols by stenciling, stamping, or rolling to show
specified, and shall be so conducted as not to interfere the manufacturer’s name, the size, the specification designa-
unnecessarily with the manufacturer’s operation. tion, the grade, and the hydrostatic test pressure when tested, or
the letters “NH” when not tested.
18. Rejection 20.2 In addition to the requirements in 20.1, bar coding is
18.1 Each length of pipe received from the manufacturer acceptable as a supplemental identification method. The pur-
may be inspected by the purchaser and, if it does not meet the chaser may specify in the order a specific bar coding system to
requirements of this specification based on the inspection and be used.
test method as outlined in the specification, the length may be 21. Packaging, Marking, and Loading for Shipment
rejected and the manufacturer shall be notified. Disposition of
21.1 When specified on the purchase order, packaging,
rejected pipe shall be a matter of agreement between the
marking, and loading for shipment shall be in accordance with
manufacturer and the purchaser.
Practices A 700.
18.2 Pipe found in fabrication or in installation to be
21.2 When specified in the contract or purchase order, the
unsuitable for the intended use, under the scope and require-
material shall be preserved, packaged, and packed in accor-
ments of this specification, may be set aside and the manufac-
dance with MIL-STD 163. The applicable levels shall be as
turer notified. Such pipe shall be subject to mutual investiga-
specified in the contract. Marking for shipment of such
tion as to the nature and severity of the deficiency and the
material shall be in accordance with Fed. Std. No. 123 for civil
forming or installation, or both, conditions involved. Disposi-
agencies and MIL-STD 129 or Fed. Std. No. 183 if continuous
tion shall be a matter for agreement.
marking is required for military agencies.
19. Certificate of Compliance 22. Keywords
19.1 When specified in the purchase order, the producer or 22.1 eddy current testing; electric resistance welded pipe;
supplier shall furnish to the purchaser a certificate of compli- hydrostatic testing; plain end pipe; Schedule 10 pipe; threaded
ance stating that the pipe has been manufactured, sampled, pipe

APPENDIX

(Nonmandatory Information)

X1. ADDITIONAL DATA

X1.1 Additional data on dimensions nominal weights and X1.2 Additional data on wall thicknesses are provided in
test pressures is provided in Table X1.1. Table X1.2.

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 A 135 – 05
TABLE X1.1 Dimensions, Nominal Weights, and Test Pressures for Light Wall Steel Pipe
Schedule 10 Test Pressure, psi (MPa)A
Outside Specified Weight
Diameter, in. Wall (Mass) Per
NPS Grade A Grade B
(mm) ThicknessA Unit Length
in. (mm) lb/ft (kg/m)
3⁄ 4 1.050 (26.7) 0.083 (2.11) 0.86 (1.28) 2500 (17.24) 2500 (17.24)
1 1.315 (33.4) 0.109 (2.77) 1.41 (2.09) 2500 (17.24) 2500 (17.24)
1 1 ⁄4 1.660 (42.2) 0.109 (2.77) 1.81 (2.69) 2400 (16.55) 2500 (17.24)
1 1 ⁄2 1.900 (48.3) 0.109 (2.77) 2.09 (3.11) 2100 (14.48) 2400 (16.55)
2 2.375 (60.3) 0.109 (2.77) 2.64 (3.93) 1700 (11.72) 1900 (13.10)
2 1 ⁄2 2.875 (73.0) 0.120 (3.05) 3.53 (5.26) 1500 (10.34) 1700 (11.72)
3 3.500 (88.9) 0.120 (3.05) 4.34 (6.46) 1200 (8.27) 1400 (9.65)
3 1 ⁄2 4.000 0.120 (3.05) 4.98 (7.41) 1000 (6.89) 1200 (8.27)
(101.6)
4 4.500 0.120 (3.05) 5.62 (8.37) 900 (6.21) 1100 (7.58)
(114.3)
5 5.563 0.134 (3.40) 7.78 (11.58) 850 (5.86) 1000 (6.89)
(141.3)
A
The test pressures are calculated by the following equation (but need not exceed 2500 psi or 17.24 MPa):
P 5 2St/D

where:
P = pressure, psi (MPa),
S = fiber stress 60 % of the specified minimum yield strength, psi (MPa),
t = specified wall thickness, in. (mm), and
D = specified outside diameter, in. (mm).

7
 A 135 – 05
TABLE X1.2 Minimum Permissible Wall Thickness on Inspection
NOTE 1—The following equation, upon which this table is based, is used to derive the minimum permissible wall thickness values from the specified
wall thickness values, with the calculated values rounded to three decimal places in accordance with the rounding method of Practice E 29:
tm 3 0.875 5 t

where:
tm = minimum permissible wall thickness, in., and
t = specified wall thickness, in.
NOTE 2—This table is a master table covering wall thicknesses available in the purchase of different classifications of pipe, but it is not meant to imply
that all of the walls listed therein are obtainable under this specification.

Specified Wall Minimum Permissible Specified Wall Minimum Permissible Specified Wall Minimum Permissible
Thickness (t), Wall Thickness (tm), Thickness (t), Wall Thickness (tm), Thickness (t), Wall Thickness (tm),
in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)
0.068 (1.73) 0.060 (1.52) 0.294 (7.47) 0.257 (6.53) 0.750 (19.05) 0.656 (16.66)
0.088 (2.24) 0.077 (1.96) 0.300 (7.62) 0.262 (6.65) 0.812 (20.62) 0.710 (18.03)
0.091 (2.31) 0.080 (2.03) 0.307 (7.80) 0.269 (6.83) 0.843 (21.41) 0.738 (18.75)
0.095 (2.41) 0.083 (2.11) 0.308 (7.82) 0.270 (6.86) 0.864 (21.95) 0.756 (19.20)
0.113 (2.87) 0.099 (2.51) 0.312 (7.92) 0.273 (6.93) 0.875 (22.23) 0.766 (19.46)
0.119 (3.02) 0.104 (2.64) 0.318 (8.08) 0.278 (7.06) 0.906 (23.01) 0.793 (20.14)
0.125 (3.18) 0.109 (2.77) 0.322 (8.18) 0.282 (7.16) 0.937 (23.80) 0.820 (20.83)
0.126 (3.20) 0.110 (2.79) 0.330 (8.38) 0.289 (7.34) 0.968 (24.59) 0.847 (21.51)
0.133 (3.38) 0.116 (2.95) 0.337 (8.56) 0.295 (7.49) 1.000 (25.40) 0.875 (22.23)
0.140 (3.56) 0.122 (3.10) 0.343 (8.71) 0.300 (7.62) 1.031 (26.19) 0.902 (22.91)
0.145 (3.68) 0.127 (3.23) 0.344 (8.74) 0.301 (7.65) 1.062 (26.97) 0.929 (23.60)
0.147 (3.73) 0.129 (3.28) 0.358 (9.09) 0.313 (7.95) 1.093 (27.76) 0.956 (24.28)
0.154 (3.91) 0.135 (3.43) 0.365 (9.27) 0.319 (8.10) 1.125 (28.58) 0.984 (24.99)
0.156 (3.96) 0.136 (3.45) 0.375 (9.53) 0.328 (8.33) 1.156 (29.36) 1.012 (25.70)
0.179 (4.55) 0.157 (3.99) 0.382 (9.70) 0.334 (8.48) 1.218 (30.94) 1.066 (27.08)
0.187 (4.75) 0.164 (4.17) 0.400 (10.16) 0.350 (8.89) 1.250 (31.75) 1.094 (27.79)
0.188 (4.78) 0.164 (4.17) 0.406 (10.31) 0.355 (9.02) 1.281 (32.54) 1.121 (28.47)
0.191 (4.85) 0.167 (4.24) 0.432 (10.97) 0.378 (9.60) 1.312 (33.33) 1.148 (29.16)
0.200 (5.08) 0.175 (4.45) 0.436 (11.07) 0.382 (9.70) 1.343 (34.11) 1.175 (29.85)
0.203 (5.16) 0.178 (4.52) 0.437 (11.10) 0.382 (9.70) 1.375 (34.93) 1.203 (30.56)
0.216 (5.49) 0.189 (4.80) 0.438 (11.13) 0.383 (9.73) 1.406 (35.71) 1.230 (31.24)
0.218 (5.54) 0.191 (4.85) 0.500 (12.70) 0.438 (11.13) 1.437 (36.53) 1.258 (31.95)
0.219 (5.56) 0.192 (4.88) 0.531 (13.49) 0.465 (11.81) 1.500 (38.10) 1.312 (33.33)
0.226 (5.74) 0.198 (5.03) 0.552 (14.02) 0.483 (12.27) 1.531 (38.89) 1.340 (34.04)
0.237 (6.02) 0.207 (5.26) 0.562 (14.27) 0.492 (12.50) 1.562 (39.68) 1.367 (34.72)
0.250 (6.35) 0.219 (5.56) 0.593 (15.06) 0.519 (13.18) 1.593 (40.46) 1.394 (35.41)
0.258 (6.55) 0.226 (5.74) 0.600 (15.24) 0.525 (13.34) 1.750 (44.45) 1.531 (38.89)
0.276 (7.01) 0.242 (6.15) 0.625 (15.88) 0.547 (13.89) 1.781 (45.24) 1.558 (39.57)
0.277 (7.04) 0.242 (6.15) 0.656 (16.66) 0.574 (14.58) 1.812 (46.03) 1.586 (40.28)
0.279 (7.09) 0.244 (6.20) 0.674 (17.12) 0.590 (14.99) 1.968 (49.99) 1.722 (43.74)
0.280 (7.11) 0.245 (6.22) 0.687 (17.45) 0.601 (15.27) 2.062 (52.38) 1.804 (45.82)
0.281 (7.14) 0.246 (6.25) 0.719 (18.24) 0.629 (15.98) 2.343 (59.51) 2.050 (52.07)

8
 A 135 – 05

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this specification since the last issue,
A 135 – 01, that may impact the use of this specification. (Approved March 1, 2005)

(1) Revised 11.1.

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