• Our Location
  • 289 Shree Bhuvan, 4th khetwadi, Mumbai
  • working hours
  • MONDAY - SATURDAY : 10:00 Am - 6:00 Pm
get a quote

ASME B16.5 Weld Neck Flange

  • Home
  • ASME B16.5 Weld Neck Flange

Refer Carbon Steel WNRF flange, Long Weld Neck flanges Dimensions in mm.


ASME B16.5 Weld Neck Flange is one type of flanges that are used with a welded neck onto them. R.C. Metal Corporation is a manufacturer and supplier of Carbon Steel wnrf flange and other types. The wnrf is a weld neck raised face flange. It has a welded neck with a raised face. The weld neck of the long weld neck flanges allow for more installation space with pipes while the raised face allows for more welding space or more space for the bolt holes. We are short weld neck flanges Manufacturers in India as well. Depending on the application requirement, the short neck or long is used.


ASME B16.5 Weld Neck Flange

ASME B16.5 Weld Neck Flange

There are different pressure classes ranging from PN6 through PN64. The PN16 WNRF Flange is a medium range weld neck raised face flange. The application of the different flanges and types such as the Reducing Weld Neck Flange can be seen in offshore oil drilling, petroleum, petrochemical, chemical, pharmaceutical and many other industrial applications. The Stainless steel weld neck flange is the most common in terms of the material used. There are alloys, super alloys, commercially pure materials and duplex materials that are used to produce the En 1092-1 Type 11 Weld Neck Flange and other special types. Sometimes, the raised face is not necessary.

RC Metal Corporation

Table of Contents

In applications where the pipeline has to have as minimum extensions as possible, the Flat Face Weld Neck Flange is used. Most flanges have bolt holes for bolting operations. The different forms of the flanges range from threaded, screwed and forged. The Forged Weld Neck Flange is forged from a single piece of material so that it is stronger. The different classes of the flanges also correspond to the different wall thickness and pressure ratings. The 300# long weld neck flange has one of the lower wall thicknesses. Please feel free to contact us for more information on the different types of flanges such as the Raised face weld neck flange and the pricing.


Weight Chart of Short Weld Neck flanges, Reducing Weld Neck Flange, Stainless steel weld neck flange Manufacturers in India.


Working Pressure of Long Weld Neck Flanges Manufacturers in India


NPS 150LBS 300LBS 600LBS 900LBS 1500LBS 2500LBS
S/O WN B/K S/O WN B/K S/O B/K WN B/K S/O WN B/K S/O WN S/O B/K WN
1/2” 0.7 0.5 0.4 0.8 0.8 0.7 0.9 0.8 0.8 1.8 2.1 1.9 1.8 2.1 1.9 3.2 3 3
3/4” 0.8 0.8 0.7 1.4 1.2 1.2 1.6 1.4 1.4 2.4 2.7 2.7 2.4 2.7 2.7 3.6 4 4.5
1” 1.1 0.9 0.8 1.7 1.5 1.4 1.9 1.7 1.7 3.6 3.9 3.7 3.6 3.9 3.7 5.4 5 5
1.1/4” 1.5 1.3 1.2 2.2 2 1.8 2.6 2.1 2.4 4.1 4.5 4.3 4.1 4.5 4.3 7.8 8 8
1.1/2” 1.8 1.6 1.4 3.2 2.9 2.7 3.6 3.1 3.4 5.4 6.2 5.9 5.4 6.2 5.9 11.5 11 11
2” 2.7 2.6 2.2 3.6 3.5 3.2 4.7 3.9 4.4 10.5 11.3 11.3 10.5 11.3 11.3 19 17 17
2.1/2” 4.4 4.1 3.5 5.4 5.3 4.5 4.8 5.4 6.8 15.8 16.3 16 15.8 16.3 16 24 25 25
3” 5.2 5.1 3.8 7.3 7.2 5.9 8.7 7.3 8.9 12.3 15 16.8 21.5 21 19.5 42.6 38 39
3-1/2” 6.4 6.5 5 8.9 9.2 7.5 11.6 9 12.7 – – – – – – – – –
4” 7.5 7.5 5.6 11.8 12.2 10 18.4 16.5 18.6 23.2 24 24.5 31 31.8 33 64 58 60
5” 9.2 9.2 6.5 16 16 12.5 31 28.5 30.8 37.5 38.5 39.5 58.8 59 60 111 95 101
6” 11.0 11.8 8.1 20.2 22 16.5 37 36.2 38 48.3 50 51.5 74 72 75 171 146 156
8” 18.4 20.4 13 31.2 36 25.5 54.5 51.5 62.2 75 85 89 112 124 125 261 220 242
10” 25.5 31 18.4 44.3 55 35 98.5 76.2 102 110 123 131 184 207 215 485 420 465
12” 37 47 28.5 63.5 82.5 52 105 89.5 132 146 168 187 264 306 316 698 590 665
14” 51 60 37.5 86 108 73 150 102 158 172 198 224 – 416 – – – –
16” 61.5 61 44.5 112 139 88 177 150 225 192 225 259 – 567 – – – –
18” 71.5 93 54 141 178 115 228 180 285 272 318 383 – 736 – – – –
20” 85 127 72 173 228 139 285 231 365 330 376 482 – 929 – – – –
24” 119 190 95 248 350 212 372 330 532 632 680 905 – 1504 – – – –

Schedule Chart of Carbon Steel WNRF Flange


Nominal Pipe Size O.D. Schedule
10		 Schedule
30		 Sch
20		 Std.
Wall		 Schedule
60		 Sch.
40		 Extra
Strong		 Sch
100		 Schedule
80		 Sch.
140		 Schedule
120		 Sch.
160		 Double
Extra
Strong
1/2” 0.840 0.674 0.622 0.622 0.546 0.546 0.464 0.252
3/4” 1.050 0.884 0.824 0.824 0.742 0.742 0.612 0.434
1” 1.315 1.097 1.049 1.049 0.957 0.957 0.815 0.599
1.1/4” 1.660 1.442 1.380 1.380 1.278 1.278 1.160 0.896
1.1/2” 1.900 1.682 1.610 1.610 1.500 1.500 1.338 1.100
2” 2.375 2.157 2.067 2.067 1.939 1.939 1.687 1.503
2.1/2” 2.875 2.635 2.469 2.469 2.323 2.323 2.125 1.771
3” 3.500 3.260 3.068 3.068 2.900 2.900 2.624 2.300
3-1/2” 4.000 3.760 3.548 3.548 3.364 3.364 2.728
4” 4.500 4.260 4.026 4.026 3.826 3.826 3.624 3.438 3.152
5” 5.563 5.295 5.047 5.047 4.813 4.813 4.563 4.313 4.063
6” 6.625 6.357 6.065 6.065 5.761 5.761 5.501 5.187 4.897
8” 8.625 8.329 8.071 8.125 7.981 7.813 7.981 7.625 7.437 7.625 7.001 7.187 6.813 6.875
10” 10.750 10.420 10.136 10.250 10.020 9.750 10.020 9.750 9.312 9.562 8.750 9.062 8.500 8.750
12” 12.750 12.390 12.090 12.250 12.000 11.626 11.938 11.750 11.062 11.374 10.500 10.750 10.126 10.750
14” 14.000 13.500 13.250 13.376 13.250 12.812 13.124 13.000 12.124 12.500 11.500 11.814 11.188
16” 16.000 15.500 15.250 15.376 15.250 14.688 15.000 15.000 13.938 14.312 13.124 13.564 12.812
18” 18.000 17.500 17.124 17.376 17.250 16.500 16.876 17.000 15.688 16.124 14.876 15.250 14.438
20” 20.000 19.500 19.000 19.250 19.250 18.376 18.812 19.000 17.438 17.938 16.500 17.000 16.062
24” 24.000 23.500 22.876 23.250 23.250 22.062 22.624 23.000 20.938 21.562 19.876 20.376 19.312
30” 30.000 29.376 28.750 29.000 29.250 29.000
36” 36.000 35.376 34.750 35.000 35.250 34.500 35.000
42” 42.000 41.250 41.000

Spec Chart of Stainless steel Weld Neck Flange


Specifications ASME B16.5 Weld Neck Flange
Standards ASME | BS | DIN | ANSI | GOST | EN Flange
Size Ranges From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB)
UNI/ DIN / EN Standard 6Bar, 10 Bar, 16Bar, 25 Bar, 40Bar
Flange Face Type FF, RF, LMF, SMF, RTJ, LJF.
JIS Standards 5 K, 10K, 16K, 20 K, 30K, 40K, 63 K
Various Pressure Classes of
Weld Neck Flanges Manufacturers in India		 Cl 150, Class 300, Cl. 400, 600, Class 900, Cl 1500 and 2500

Most Commonly Used ASME B16.5 Weld Neck Flange Types


ASTM A105N WN Flanges, 10 Inch, Class 150 LB, SCH 40

ASTM A105N WN Flanges, 10 Inch, Class 150 LB, SCH 40

ASTM A182 Weld Neck Flanges, 150 LB, 12 Inch, SCH 40, RF

ASTM A182 Weld Neck Flanges, 150 LB, 12 Inch, SCH 40, RF

1 in. 300# Raised Face Blind Carbon Steel Weld Neck Flanges

1 in. 300# Raised Face Blind Carbon Steel Weld Neck Flanges

18 in. 150# Schedule 80 Raised Face Carbon Steel Weld Neck Flanges

18 in. 150# Schedule 80 Raised Face Carbon Steel Weld Neck Flanges

ASTM A182 F316L WN Flanges, PN16, DN80, EN1092-1 Type 11

ASTM A182 F316L WN Flanges, PN16, DN80, EN1092-1 Type 11

3 in. 150# Raised Face Slip On Carbon Steel Weld Neck Flanges

3 in. 150# Raised Face Slip On Carbon Steel Weld Neck Flanges

1" SS304 B16.5 RF 150lb Sch10s Forged Weld Neck Pipe Flange

1" SS304 B16.5 RF 150lb Sch10s Forged Weld Neck Pipe Flange

4" A105 B16.5 Carbon Steel Weld Neck Pipe Flange

4" A105 B16.5 Carbon Steel Weld Neck Pipe Flange

150# RF, 2", ASTM a-105, Dim. S/ANSI B16.5 Weld neck flange

150# RF, 2", ASTM a-105, Dim. S/ANSI B16.5 Weld neck flange

A182 F316 ASME B16.5 150# Stainless Steel Long Weld Neck Flange

A182 F316 ASME B16.5 150# Stainless Steel Long Weld Neck Flange

ANSI B16.5 Class 900 2" Weld Neck Flange

ANSI B16.5 Class 900 2" Weld Neck Flange

1" A182 F11 B16.5 Alloy Steel Weld Neck Flange

1" A182 F11 B16.5 Alloy Steel Weld Neck Flange

Check PN16 WNRF Flange, Flat Face Weld Neck Flange Schedule Chart, Dimensions of WNRF flange class 150.


Dimensions of 150# Weld Neck Flange


Dimensions of Weld Neck Flange

Size in inch. Sizes in mm O.D. Hub O.D. Flanges Thick. Weld Neck Length Weld Neck O.D. Bore RF Height RF Dia. Weld Face PCD
A C B E D F H G J I
1/2 15 90 30 9.6 46 21.3 Refer Note 2 34.9 1.6 60.3
3/4 20 100 38 11.2 51 26.7 2 42.9 1.6 69.9
1 25 110 49 12.7 54 33.4 2 50.8 1.6 79.4
1 1/4 32 115 59 14.3 56 42.2 2 63.5 1.6 88.9
1 1/2 40 125 65 15.9 60 48.3 2 73 1.6 98.4
2 50 150 78 17.5 62 60.3 2 92.1 1.6 120.7
2 1/2 65 180 90 20.7 68 73 2 104.8 1.6 139.7
3 80 190 108 22.3 68 88.9 2 127 1.6 152.4
3 1/2 90 215 122 22.3 70 101.6 2 139.7 1.6 177.8
4 100 230 135 22.3 75 114.3 2 157.2 1.6 190.5
5 125 255 164 22.3 87 141.3 2 185.7 1.6 215.9
6 150 280 192 23.9 87 168.3 2 215.9 1.6 241.3
8 200 345 246 27 100 219.1 2 269.9 1.6 298.5
10 250 405 305 28.6 100 273 2 323.8 1.6 362
12 300 485 365 30.2 113 323.8 2 381 1.6 431.8
14 350 535 400 33.4 125 355.6 2 412.8 1.6 476.3
16 400 595 457 35 125 406.4 2 469.9 1.6 539.8
18 450 635 505 38.1 138 457.2 2 533.4 1.6 577.9
20 500 700 559 41.3 143 508 2 584.2 1.6 635
24 600 815 663 46.1 151 610 2 692.2 1.6 749.3
View 300# long weld neck flange, JIS Weld Neck Flange Dimensions, EN 1092-1 Type 11 Weld Neck Flange Suppliers in India.

Welding Neck Flange 300 lbs Dimensional Table


Size in Millimeter Size in In O.D. Thickness of Flanges O.D. of Weld Neck Hub O.D. Length of Welding Neck Bore RF Height RF Dia. Weld Face PCD
A B D C E F H G J I
15 1/2 95 12.7 21.3 38 51 Refer Note 2 34.9 1.6 66.7
20 3/4 115 14.3 26.7 48 56 2 42.9 1.6 82.6
25 1 125 15.9 33.4 54 60 2 50.8 1.6 88.9
32 1 1/4 135 17.5 42.2 64 64 2 63.5 1.6 98.4
40 1 1/2 155 19.1 48.3 70 67 2 73 1.6 114.3
50 2 165 20.7 60.3 84 68 2 92.1 1.6 127
65 2 1/2 190 23.9 73 100 75 2 104.8 1.6 149.2
80 3 210 27 88.9 117 78 2 127 1.6 168.3
90 3 1/2 230 28.6 101.6 133 79 2 139.7 1.6 184.2
100 4 255 30.2 114.3 146 84 2 157.2 1.6 200
125 5 280 33.4 141.3 178 97 2 185.7 1.6 235
150 6 320 35 168.3 206 97 2 215.9 1.6 269.9
200 8 380 39.7 219.1 260 110 2 269.9 1.6 330.2
250 10 445 46.1 273 321 116 2 323.8 1.6 387.4
300 12 520 49.3 323.8 375 129 2 381 1.6 450.8
350 14 585 52.4 355.6 425 141 2 412.8 1.6 514.4
400 16 650 55.6 406.4 483 144 2 469.9 1.6 571.5
450 18 710 58.8 457 533 157 2 533.4 1.6 628.6
500 20 775 62 508 587 160 2 584.2 1.6 685.8
600 24 915 68.3 610 702 167 2 692.2 1.6 812.8

Class 600 Weld neck flange Standard Dimension


Dimensions of Weld Neck Flange

Size in inches Size in mm Hub O.D. O.D. Flanges Thick. Outer Diameter of Weld Neck Lengths of Welding Neck Bore RF Height RF Diameter Weld Face PCD
C A B D E F H G J I
1/2 15 38 95 14.3 21.3 52 Refer Note 7 34.9 1.6 66.7
3/4 20 48 115 15.9 26.7 57 7 42.9 1.6 82.6
1 25 54 125 17.5 33.4 62 7 50.8 1.6 88.9
1 1/4 32 64 135 20.7 42.2 67 7 63.5 1.6 98.4
1 1/2 40 70 155 22.3 48.3 70 7 73 1.6 114.3
2 50 84 165 25.4 60.3 73 7 92.1 1.6 127
2 1/2 65 100 190 28.6 73 79 7 104.8 1.6 149.2
3 80 117 210 31.8 88.9 83 7 127 1.6 168.3
3 1/2 90 133 230 35 101.6 86 7 139.7 1.6 184.2
4 100 152 275 38.1 114.3 102 7 157.2 1.6 215.9
5 125 189 330 44.5 141.3 114 7 185.7 1.6 266.7
6 150 222 355 47.7 168.3 117 7 215.9 1.6 292.1
8 200 273 420 55.6 219.1 133 7 269.9 1.6 349.2
10 250 343 510 63.5 273 152 7 323.8 1.6 431.8
12 300 400 560 66.7 323.8 156 7 381 1.6 489
14 350 432 605 69.9 355.6 165 7 412.8 1.6 527
16 400 495 685 76.2 406.4 178 7 469.9 1.6 603.2
18 450 546 745 82.6 457 184 7 533.4 1.6 654
20 500 610 815 88.9 508 190 7 584.2 1.6 723.9
24 600 718 940 101.6 610 203 7 692.2 1.6 838.2

Dimension of 900# Weld Neck Flange


Sizes in mm Sizes in inch. O.D. Weld Neck (O.D.) Flanges Thicknesses Hub Outer Diameter Welding Neck Lengths Bore PCD RF Diameter Weld Face RF Height
A D B C E F I G J H
15 1/2 120 21.3 22.3 38 60 Refer Note 82.6 34.9 1.6 7
20 3/4 130 26.7 25.4 44 70 88.9 42.9 1.6 7
25 1 150 33.4 28.6 52 73 101.6 50.8 1.6 7
32 1 1/4 160 42.2 28.6 64 73 111.1 63.5 1.6 7
40 1 1/2 180 48.3 31.8 70 83 123.8 73 1.6 7
50 2 215 60.3 38.1 105 102 165.1 92.1 1.6 7
65 2 1/2 245 73 41.3 124 105 190.5 104.8 1.6 7
80 3 240 88.9 38.1 127 102 190.5 127 1.6 7
100 4 290 114.3 44.5 159 114 235 157.2 1.6 7
125 5 350 141.3 50.8 190 127 279.4 185.7 1.6 7
150 6 380 168.3 55.6 235 140 317.5 215.9 1.6 7
200 8 470 219.1 63.5 298 162 393.7 269.9 1.6 7
250 10 545 273 69.9 368 184 469.9 323.8 1.6 7
300 12 610 323.8 79.4 419 200 533.4 381 1.6 7
350 14 640 355.6 85.8 451 213 558.8 412.8 1.6 7
400 16 705 406.4 88.9 508 216 616 469.9 1.6 7
450 18 785 457 101.6 565 229 685.8 533.4 1.6 7
500 20 855 508 108 622 248 749.3 584.2 1.6 7
600 24 1040 610 139.7 749 292 901.7 692.2 1.6 7

CS WNRF flange Class 1500 Dimensions Chart


Size (in.) Size (mm) O.D. Thick. of Flanges Outer Diameter of Hub O.D. of Weld Neck Lengths of Welding Neck Bore RF Height RF Diameter Weld Face PCD
A B C D E F H G J I
1/2 15 120 22.3 38 21.3 60 Refer Note 7 34.9 1.6 82.6
3/4 20 130 25.4 44 26.7 70 7 42.9 1.6 88.9
1 25 150 28.6 52 33.4 73 7 50.8 1.6 101.6
1 1/4 32 160 28.6 64 42.2 73 7 63.5 1.6 111.1
1 1/2 40 180 31.8 70 48.3 83 7 73 1.6 123.8
2 50 215 38.1 105 60.3 102 7 92.1 1.6 165.1
2 1/2 65 245 41.3 124 73 105 7 104.8 1.6 190.5
3 80 265 47.7 133 88.9 117 7 127 1.6 203.2
4 100 310 54 162 114.3 124 7 157.2 1.6 241.3
5 125 375 73.1 197 141.3 156 7 185.7 1.6 292.1
6 150 395 82.6 229 168.3 171 7 215.9 1.6 317.5
8 200 485 92.1 292 219.1 213 7 269.9 1.6 393.7
10 250 585 108 368 273 254 7 323.8 1.6 482.6
12 300 675 123.9 451 323.8 283 7 381 1.6 571.5
14 350 750 133.4 495 355.6 298 7 412.8 1.6 635
16 400 825 146.1 552 406.4 311 7 469.9 1.6 704.8
18 450 915 162 597 457 327 7 533.4 1.6 774.7
20 500 985 177.8 641 508 356 7 584.2 1.6 831.8
24 600 1170 203.2 762 610 406 7 692.2 1.6 990.6

Dimensional Table of Weld Neck Flange Class 2500


Size in Millimeter Sizes in In. Outer Dia. Hub Outer Dia. Flange Thickness Welding Neck Lengths Weld Neck Outer Dia. Bore RF Dia. PCD RF Height Weld Face
A C B E D F G I H J
15 1/2 135 43 30.2 73 21.3 Refer Note 34.9 88.9 7 1.6
20 3/4 140 51 31.8 79 26.7 42.9 95.2 7 1.6
25 1 160 57 35 89 33.4 50.8 108 7 1.6
32 1 1/4 185 73 38.1 95 42.2 63.5 130.2 7 1.6
40 1 1/2 205 79 44.5 111 48.3 73 146 7 1.6
50 2 235 95 50.9 127 60.3 92.1 171.4 7 1.6
65 2 1/2 265 114 57.2 143 73 104.8 196.8 7 1.6
80 3 305 133 66.7 168 88.9 127 228.6 7 1.6
100 4 355 165 76.2 190 114.3 157.2 273 7 1.6
125 5 420 203 92.1 229 141.3 185.7 323.8 7 1.6
150 6 485 235 108 273 168.3 215.9 368.3 7 1.6
200 8 550 305 127 318 219.1 269.9 438.2 7 1.6
250 10 675 375 165.1 419 273 323.8 539.8 7 1.6
300 12 760 441 184.2 464 323.8 381 619.1 7 1.6
Find here DIN 2633 Weld neck flange pn16, Forged Weld Neck Flange Tolerances, Buy Raised face weld neck flange at cheapest cost.

Tolerance of PN16 WNRF Flange


Dimensions Flange Tolerance
B Diameter of contact face
  • 1/16" raised face: ±1/32" (0.8Millimeter)
  • 1/4" Raised Face, Tongue & Groove (male & female): ±1/64" (0.4 Millimeter)
A Outside Diameter
  • When Outside Diameter is 24" or less: ±1/16" (1.6 Millimeter)
  • When Outside Diameter is over 24": ±1/8" (3.2 Millimeter)
D Inside Diameter
  • 10" and smaller: ±1/32" (0.8 Millimeter)
  • 12" thru 18": +1/8" (3.2 Millimeter)
  • 20" and larger: -1/16" (1.6Millimeter)
J Diameter of hub at base
  • When hub base is 24" or smaller: ±1/16" (1.6 Millimeter)
  • When hub base is over 24": ±1/8" (3.2 Millimeter)
H Diameter of hub at point of welding
  • 5" and smaller: +3/32" (2.4 Millimeter), -1/32" (0.8 Millimeter)
  • 6" and larger: +5/32" (4.0 Millimeter), -1/32 (0.8 Millimeter)
C Thickness
  • 18" and smaller: ±1/8" (3.2 Millimeter), -0"
  • 20" and larger: ±3/16" (4.8 Millimeter), -0"
P Drilling
  • Bolt circle: ±1/16" (1.6 Millimeter)
  • Bolt hole spacing: ±1/32" (0.8 Millimeter)
Eccentricity of bolt circle with respect to facing
  • 2 1/2" and smaller ±1/32" (0.8 Millimeter) max.
  • 3" and larger ±1/16" (1.6 Millimeter) max.
K Length of hub
  • 10" and smaller: ±1/16" (1.6 Millimeter)
  • 12" and larger: ±1/8" (3.2 Millimeter)