WELDING NECK 150#

ANSI B16.5 CLASS 150 WELDING NECK FLANGES

Nominal Outside Thickness Raised Face Point of Hub Bore Number Diameter Bolt Approximate
Pipe Size Diameter (O) (T) Diameter (R) Weld (A) Diameter (X) (B) of Holes of Holes Circle (C) Weight (lbs)
½ 3.50 0.44 1.38 0.84 1.19 0.62 4 0.63 2.38 2
¾ 3.88 0.50 1.69 1.05 1.50 0.82 4 0.63 2.75 2
1 4.25 0.56 2.00 1.32 1.94 1.05 4 0.63 3.13 3
1¼ 4.63 0.63 2.50 1.66 2.31 1.38 4 0.63 3.50 3
1½ 5.00 0.69 2.88 1.90 2.56 1.61 4 0.63 3.88 4
2 6.00 0.75 3.63 2.38 3.06 2.07 4 0.75 4.75 6
2½ 7.00 0.88 4.13 2.88 3.56 2.47 4 0.75 5.50 8
3 7.50 0.94 5.00 3.50 4.25 3.07 4 0.75 6.00 10
3½ 8.50 0.94 5.50 4.00 4.81 3.55 8 0.75 7.00 12
4 9.00 0.94 6.19 4.50 5.31 4.03 8 0.75 7.50 15
5 10.00 0.94 7.13 5.56 6.44 5.05 8 0.88 8.50 19
6 11.00 1.00 8.50 6.63 7.56 6.07 8 0.88 9.50 24
8 13.50 1.13 10.63 8.63 9.69 7.98 8 0.88 11.75 39
10 16.00 1.19 12.75 10.75 12.00 10.02 12 1.00 14.25 52
12 19.00 1.25 15.00 12.75 14.38 12.00 12 1.00 17.00 80
14 21.00 1.38 16.25 14.00 15.75 13.25 12 1.13 18.75 110
16 23.50 1.44 18.50 16.00 18.00 15.25 16 1.13 21.25 140
18 25.00 1.56 21.00 18.00 19.88 17.25 16 1.25 22.75 150
20 27.50 1.69 23.00 20.00 22.00 19.25 20 1.25 25.00 180
22 29.50 1.81 25.25 22.00 24.25 21.25 20 1.38 27.25 225
24 32.00 1.88 27.25 24.00 26.13 23.25 20 1.38 29.50 260

*All dimensions are in inches.

These flanges will be furnished with a 1/16" raised face unless otherwise specified.
Flat face option available.
Standard Bore will be furnished unless otherwise specified. +52(81)1646-9090 (main) www.dlineproducts.com
 WELDING NECK 300#

ANSI B16.5 CLASS 300 WELDING NECK FLANGES

Nominal Outside Thickness Raised Face Lenght Thru Point of Hub Bore Number Diameter Bolt Approximate
Pipe Size Diameter (O) (T) Diameter (R) Hub (Y) Weld (A) Diameter (X) (B) of Holes of Holes Circle (C) Weight (lbs)
½ 3.75 0.56 1.38 2.05 0.84 1.50 0.62 4 0.63 2.63 2
¾ 4.63 0.63 1.69 2.25 1.05 1.88 0.82 4 0.75 3.25 3
1 4.88 0.69 2.00 2.44 1.32 2.13 1.05 4 0.75 3.50 4
1¼ 5.25 0.75 2.50 2.56 1.66 2.50 1.38 4 0.75 3.88 5
1½ 6.13 0.81 2.88 2.69 1.90 2.75 1.61 4 0.88 4.50 7
2 6.50 0.88 3.63 2.75 2.38 3.31 2.07 8 0.75 5.00 9
2½ 7.50 1.00 4.13 3.00 2.88 3.94 2.47 8 0.88 5.88 12
3 8.25 1.13 5.00 3.13 3.50 4.63 3.07 8 0.88 6.63 15
3½ 9.00 1.19 5.50 3.19 4.00 5.25 3.55 8 0.88 7.25 18
4 10.00 1.25 6.19 3.38 4.50 5.75 4.03 8 0.88 7.88 25
5 11.00 1.38 7.13 3.88 5.56 7.00 5.05 8 0.88 9.25 32
6 12.50 1.44 8.50 3.88 6.63 8.13 6.07 12 0.88 10.63 42
8 15.00 1.63 10.63 4.38 8.63 10.25 7.98 12 1.00 13.00 67
10 17.50 1.88 12.75 4.63 10.75 12.63 10.02 16 1.13 15.25 91
12 20.50 2.00 15.00 5.13 12.75 14.75 12.00 16 1.25 17.75 140
14 23.00 2.13 16.25 5.63 14.00 16.75 13.25 20 1.25 20.25 180
16 25.50 2.25 18.50 5.75 16.00 19.00 15.25 20 1.38 22.50 250
18 28.00 2.38 21.00 6.25 18.00 21.00 17.25 24 1.38 24.75 320
20 30.50 2.50 23.00 6.38 20.00 23.13 19.25 24 1.38 27.00 400
22 33.00 2.63 25.25 6.50 22.00 25.25 21.25 24 1.63 29.25 465
24 36.00 2.75 27.25 6.63 24.00 27.63 23.25 24 1.63 32.00 580

*All dimensions are in inches.

These flanges will be furnished with a 1/16" raised face unless otherwise specified.
Flat face option available.
Standard Bore will be furnished unless otherwise specified. +52(81)1646-9090 (main) www.dlineproducts.com
 WELDING NECK 600#

ANSI B16.5 CLASS 600 WELDING NECK FLANGES

Nominal Outside Thickness Raised Face Lenght Thru Point of Hub Bore Number Diameter Bolt Approximate
Pipe Size Diameter (O) (T) Diameter (R) Hub (Y) Weld (A) Diameter (X) (B) of Holes of Holes Circle (C) Weight (lbs)
½ 3.75 0.56 1.38 2.06 0.84 1.50 Specified by purchaser 4 0.63 2.63 2
¾ 4.63 0.63 1.69 2.25 1.05 1.88 Specified by purchaser 4 0.75 3.25 3
1 4.88 0.69 2.00 2.44 1.32 2.13 Specified by purchaser 4 0.75 3.50 4
1¼ 5.25 0.81 2.50 2.63 1.66 2.50 Specified by purchaser 4 0.75 3.88 6
1½ 6.13 0.88 2.88 2.75 1.90 2.75 Specified by purchaser 4 0.88 4.50 8
2 6.50 1.00 3.63 2.88 2.38 3.31 Specified by purchaser 8 0.75 5.00 12
2½ 7.50 1.13 4.13 3.13 2.88 3.94 Specified by purchaser 8 0.88 5.88 18
3 8.25 1.25 5.00 3.25 3.50 4.63 Specified by purchaser 8 0.88 6.63 23
3½ 9.00 1.38 5.50 3.38 4.00 5.25 Specified by purchaser 8 1.00 7.25 26
4 10.75 1.50 6.19 4.00 4.50 6.00 Specified by purchaser 8 1.00 8.50 42
5 13.00 1.75 7.13 4.50 5.56 7.44 Specified by purchaser 8 1.13 10.50 68
6 14.00 1.88 8.50 4.63 6.63 8.75 Specified by purchaser 12 1.13 11.50 81
8 16.50 2.19 10.63 5.25 8.63 10.75 Specified by purchaser 12 1.25 13.75 120
10 20.00 2.50 12.75 6.00 10.75 13.50 Specified by purchaser 16 1.38 17.00 190
12 22.00 2.63 15.00 6.13 12.75 15.75 Specified by purchaser 20 1.38 19.25 225
14 23.75 2.75 16.25 6.50 14.00 17.00 Specified by purchaser 20 1.50 20.75 280
16 27.00 3.00 18.50 7.00 16.00 19.50 Specified by purchaser 20 1.63 23.75 390
18 29.25 3.25 21.00 7.25 18.00 21.50 Specified by purchaser 20 1.75 25.75 475
20 32.00 3.50 23.00 7.50 20.00 24.00 Specified by purchaser 24 1.75 28.50 590
22 24.25 3.75 25.25 7.75 22.00 26.25 Specified by purchaser 24 1.88 30.63 720
24 37.00 4.00 27.25 8.00 24.00 28.25 Specified by purchaser 24 2.00 33.00 830

*All dimensions are in inches.

These flanges will be furnished with a 1/4" raised face unless otherwise specified.
Flat face option available. +52(81)1646-9090 (main) www.dlineproducts.com
 WELDING NECK 900#

ANSI B16.5 CLASS 900 WELDING NECK FLANGES

Nominal Outside Thickness Raised Face Lenght Thru Point of Hub Bore Number Diameter Bolt Approximate
Pipe Size Diameter (O) (T) Diameter (R) Hub (Y) Weld (A) Diameter (X) (B) of Holes of Holes Circle (C) Weight (lbs)
½ 4.75 0.88 1.38 2.36 0.84 1.50 Specified by purchaser 4 0.88 3.25 5
¾ 5.13 1.00 1.69 2.75 1.05 1.75 Specified by purchaser 4 0.88 3.50 6
1 5.88 1.13 2.00 2.88 1.32 2.06 Specified by purchaser 4 1.00 4.00 9
1¼ 6.25 1.13 2.50 2.88 1.66 2.50 Specified by purchaser 4 1.00 4.38 10
1½ 7.00 1.25 2.88 3.25 1.90 2.75 Specified by purchaser 4 1.13 4.88 13
2 8.50 1.50 3.63 4.00 2.38 4.13 Specified by purchaser 8 1.00 6.50 25
2½ 9.63 1.63 4.13 4.06 2.88 4.88 Specified by purchaser 8 1.13 7.50 36
3 9.50 1.50 5.00 4.00 4.00 5.00 Specified by purchaser 8 1.00 7.50 31
4 11.50 1.75 6.19 4.50 4.50 6.25 Specified by purchaser 8 1.25 9.25 53
5 13.75 2.00 7.13 5.00 5.56 7.50 Specified by purchaser 8 1.38 11.00 86
6 15.00 2.19 8.50 5.50 6.63 9.25 Specified by purchaser 12 1.25 12.50 110
8 18.50 2.50 10.63 6.38 8.63 11.75 Specified by purchaser 12 1.50 15.50 175
10 21.50 2.75 12.75 7.25 10.75 14.50 Specified by purchaser 16 1.50 18.50 260
12 24.00 3.13 15.00 7.88 12.75 16.50 Specified by purchaser 20 1.50 21.00 325
14 25.25 3.38 16.25 8.38 14.00 17.75 Specified by purchaser 20 1.63 22.00 400
16 27.75 3.50 18.50 8.50 16.00 20.00 Specified by purchaser 20 1.75 24.25 495
18 31.00 4.00 21.00 9.00 18.00 22.25 Specified by purchaser 20 2.00 27.00 680
20 33.75 4.25 23.00 9.75 20.00 24.50 Specified by purchaser 20 2.13 29.50 830
24 41.00 5.50 27.25 11.50 24.00 29.50 Specified by purchaser 20 2.63 35.50 1500

*All dimensions are in inches.

These flanges will be furnished with a 1/4" raised face unless otherwise specified.
Flat face option available. +52(81)1646-9090 (main) www.dlineproducts.com
 WELDING NECK 1500#

ANSI B16.5 CLASS 1500 BLIND FLANGES

Nominal Outside Thickness Raised Face Lenght Thru Point of Hub Bore Number Diameter Bolt Approximate
Pipe Size Diameter (O) (T) Diameter (R) Hub (Y) Weld (A) Diameter (X) (B) of Holes of Holes Circle (C) Weight (lbs)
½ 4.75 0.88 1.38 2.36 0.84 1.50 Specified by purchaser 4 0.88 3.25 5
¾ 5.13 1.00 1.69 2.75 1.05 1.75 Specified by purchaser 4 0.88 3.50 6
1 5.88 1.13 2.00 2.88 1.32 2.06 Specified by purchaser 4 1.00 4.00 9
1¼ 6.25 1.13 2.50 2.88 1.66 2.50 Specified by purchaser 4 1.00 4.38 10
1½ 7.00 1.25 2.88 3.25 1.90 2.75 Specified by purchaser 4 1.13 4.88 13
2 8.50 1.50 3.63 4.00 2.38 4.13 Specified by purchaser 8 1.00 6.50 25
2½ 9.63 1.63 4.13 4.06 2.88 4.88 Specified by purchaser 8 1.13 7.50 36
3 10.50 1.85 5.00 4.63 3.50 5.25 Specified by purchaser 8 1.25 8.00 48
4 12.25 2.13 6.19 4.88 4.50 6.38 Specified by purchaser 8 1.38 9.50 73
5 14.75 2.88 7.13 6.13 5.56 7.75 Specified by purchaser 8 1.63 11.50 130
6 15.50 3.25 8.50 6.75 6.63 9.00 Specified by purchaser 12 1.50 12.50 165
8 19.00 3.63 10.63 8.38 8.63 11.75 Specified by purchaser 12 1.75 15.50 275
10 23.00 4.25 12.75 10.00 10.75 14.50 Specified by purchaser 12 2.00 19.00 455
12 26.50 4.88 15.00 11.13 12.75 17.75 Specified by purchaser 16 2.13 22.50 690
14 29.50 5.25 16.25 11.75 14.00 19.50 Specified by purchaser 16 2.38 25.00 940
16 32.50 5.75 18.50 12.25 16.00 21.75 Specified by purchaser 16 2.63 27.75 1250
18 36.00 6.38 21.00 12.88 18.00 23.50 Specified by purchaser 16 2.88 30.50 1625
20 38.75 7.00 23.00 14.00 20.00 25.25 Specified by purchaser 16 3.13 32.75 2050
24 46.00 8.00 27.25 16.00 24.00 30.00 Specified by purchaser 16 3.63 39.00 3325

*All dimensions are in inches.

These flanges will be furnished with a 1/4" raised face unless otherwise specified.
Flat face option available. +52(81)1646-9090 (main) www.dlineproducts.com
 WELDING NECK 2500#
X
A

B Y

23º D
E
R
C
O

ANSI B16.5 CLASS 2500 WELDING NECK FLANGES RTJ

Grooved Lenght Point Hub Bolt Grooved Grooved
Nominal Outside Thickness Face Bore Number Diameter Grooved Approximate
Pipe Size Diameter Thru of Weld Diameter (B) Circle Thickness length Weight (lbs)
(T) Diameter Hub (Y) (X) of Holes of Holes (C) Number
(O) (R) (A) (D) (E)

2 9.25 2.00 5.25 5.00 2.38 3.75 Specified by purchaser 8 1.12 6.75 0.31 0.47 R26 42.10
3 12.00 2.62 6.63 6.62 3.50 5.25 Specified by purchaser 8 1.38 9.00 0.38 0.43 R32 94.13
4 14.00 3.00 8.00 7.50 4.50 6.50 Specified by purchaser 8 1.63 10.75 0.44 0.66 R38 146.16
6 19.00 4.25 11.00 10.75 6.63 9.25 Specified by purchaser 8 2.12 14.50 0.50 0.78 R47 378.31

*All dimensions are in inches.

+52(81)1646-9090 (main) www.dlineproducts.com