Weld Neck Flange Supplier, Stockists

An ANSI class is a designation maintained by a set of specifications or standards that is intended to communicate the pipe flanges' pressure and temperature ratings. The word "Class" is used in its denotation after a dimensionless number. This comprises Weld Neck Flange Classes 600, 900, 1500, and 2500, as well as Classes 150, 300, and 400.

Table of Content

View Raised Face Weld Neck Flange in Pn16 and A105 Carbon Steel Weld Neck Flange Dimensions for Stainless Steel Weld Neck Flange.

There are two configurations available for weld neck flanges made of carbon steel. Pipes are used with the standard kind of API 6A Weld Neck Flange, but pipes are not appropriate for the long type of alloy steel Weld Neck flange. Consequently, process plants employ this Asme B16.5 Weld Neck Flange. stainless steel alloy 304 Weld Neck flange can withstand extremes in temperature, pressure, or other types of stress, making them suitable for use in hostile environments.

Welding the pipe to the flange's neck secures these pipe flanges. By doing this, the stress is transferred from the flange to the pipe. Additionally, the hub's base is under much less stress because to this. When high pressure is a factor, weld neck flanges are frequently used. The standard stipulates that the inside diameter of the flange must match the inside diameter of the pipe. Published standards cover welded neck pipe flanges with hubs in size ranges between 1/2" and 96". These are offered by the majority of weld neck flange manufacturers in India in all material grades, specifications, and sizes.

The Stainless Steel Weld Neck Flange Manufacturer normally offers three faces for Weld Neck Flange Jis 5k. They are RTJ facing, a raised face, or a flat face. When the typical height is 1/16 of an inch for weld neck pipe flanges under 400#, a Weld Neck Flange Raised Face is required. The common Weld Neck Flange A105 requires a raised face height of 1/4" for weld neck pipe flanges of 400# and higher.

Look at the Weld Neck Flange Awwa C207 Class D Weigh Chart and the Price List Of API 6A WNRF Flange In India. Copper WNRF Flange Supplier In Mumbai.

Carbon Steel Weld Neck Flanges
Carbon Steel Weld Neck Flanges
Stainless Steel Weld Neck Flange Manufacturers
Stainless Steel Weld Neck Flange Manufacturers
Alloy Steel Weld Neck Flanges
Alloy Steel Weld Neck Flanges

Look at the Weld Neck Flange Awwa C207 Class D Weigh Chart and the Price List Of API 6A WNRF Flange In India. Copper WNRF Flange Supplier In Mumbai.

Steel Pipe Flanges and Flanged Fittings from NPS 1/2 through NPS 24 Metric/Inch are covered by the specification for Weld Neck Flange Asme B16.5 Class 300. These Weld Neck Flanges meet EN 1092-1 standards for pressure classes 150 to 2500. The Weld Neck Flange Jis 10k specification includes information on materials, dimensions, pressure-temperature ratings, tolerances, labelling, testing, and techniques for designating openings for flanged fittings and pipe flanges.

Price List of Weld Neck Flanges
Weld Neck Flange type
Weld Neck Flange Price in India
Weld Neck Flange Price in USD
Weld Neck Flange Price in UAE Dirham
Stainless Steel Weld Neck Flange
INR 1540.61 / Kg
USD $ 10.45 /Kg
AED 72.46 UAE Dirham
Carbon steel Weld neck flanges
INR 5270.01 / Kg
USD $ 65.89 /Kg
AED 258.76 UAE Dirham
Alloy steel Weld neck flanges
INR 4544.14 / Kg
USD $ 55.36 /Kg
AED 230.08 UAE Dirham
ANSI b16 5 Weld neck flanges
INR 5255.01 / Kg
USD $ 65.56 /Kg
AED 220.08 UAE Dirham
ASME b16.47 Weld neck flanges
INR 6649.87 / Kg
USD $ 75.56 /Kg
AED 341.01 UAE Dirham

 

What is Weld Neck Flanges ?

For high-pressure applications, the Welding Neck Flanges (WNRF) are frequently utilised. It's crucial to state the purpose of the pipe when ordering a weld neck flange. This is so that the flange's interior diameter can be matched to that of your pipe or fitting. Extreme temperature swings and settings where there may be a lot of bending and handling of the flanges make welding neck flanges desirable.

 

Specification of Weld Neck Flanges
Weld Neck Flanges Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
ASME B16.5 Weld Neck Flanges Size Chart 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Weld Neck Flanges Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Weld Neck Flanges
Weld Neck Flanges Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Weld Neck Flanges
UNI 6Bar 10Bar 16Bar 25Bar 40Bar Weld Neck Flanges
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Weld Neck Flanges
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Weld Neck Flanges
EN 6Bar 10Bar 16Bar 25Bar 40Bar Weld Neck Flanges
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Most common types of Weld Neck Flanges Forged / Threaded / Screwed / Plate
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Production technique
  • Forged, Heat treated and machined
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations
Origin Indian / West Europe / Japan / USA / Korean
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Weld Neck Flanges Uses & application
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.
Manufacturer of

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
Weld Neck Flanges: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • B.S: BS4504 , BS3293, BS1560, BS10
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 Weld Neck Flanges
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
Export to Saudi Arabia, Peru, Egypt, Indonesia, Brazil, Spain, USA, Canada, Ukraine, Singapore, Thailand, Oman, Ireland, Korea, Iran, India, Dubai
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

 

Dimensions of Weld Neck Flanges/ Size Chart of Weld Neck Flange

4 Weld Neck Flange Dimensions, PN16 Weld Neck Flange Dimensions, and ANSI B16.5 Long Weld Neck Flange Dimensions

 

Weld Neck Flanges Dimensions

 

ANSI/ASME/ASA B16.5 150lb/sq.in. Flange WN-RF
ø
D
b
g
m
a
J*
h
k
Holes
l
Kg.
1/2"
88,9
11,1
34,9
30,2
21,3
15,7
47,6
60,3
4
15,9
0,500
3/4"
98,4
12,7
42,9
38,1
26,7
20,8
52,4
69,8
4
15,9
0,700
1"
107,9
14,3
50,8
49,2
33,5
26,7
55,6
79,4
4
15,9
1,100
1 1/4"
117,5
15,9
63,5
58,8
42,2
35,1
57,1
88,9
4
15,9
1,500
1 1/2"
127,0
17,5
73,0
65,1
48,3
40,9
61,9
98,4
4
15,9
1,800
2"
152,4
19,0
92,1
77,8
60,3
52,6
63,5
120,6
4
19,0
2,700
2 1/2"
177,8
22,2
104,8
90,5
73,1
62,7
69,8
139,7
4
19,0
4,400
3"
190,5
23,8
127,0
107,9
88,9
78,0
69,8
152,4
4
19,0
5,200
3 1/2"
215,9
23,8
139,7
122,2
101,6
90,2
71,4
177,8
8
19,0
6,400
4"
228,6
23,8
157,2
134,9
114,3
102,4
76,2
190,5
8
19,0
7,500
5"
254,0
23,8
185,7
163,5
141,2
128,3
88,9
215,9
8
22,2
9,200
6"
279,4
25,4
215,9
192,1
168,4
154,2
88,9
241,3
8
22,2
11,000
8"
342,9
28,6
269,9
246,1
219,1
202,7
101,6
298,4
8
22,2
18,300
10"
406,4
30,2
323,8
304,8
273,0
254,5
101,6
361,9
12
25,4
25,000
12"
482,6
31,7
381,0
365,1
323,8
304,8
114,3
431,8
12
25,4
39,000
14"
533,4
34,9
412,7
400,0
355,6
336,5
127,0
476,2
12
28,6
51,000
16"
596,9
36,5
469,9
457,2
406,4
387,3
127,0
539,7
16
28,6
60,000
18"
635,0
39,7
533,4
504,8
457,2
438,1
139,7
577,8
16
31,7
71,000
20"
698,5
42,9
584,2
558,8
508,0
488,9
144,5
635,0
20
31,7
88,000
22"
749,3
46,0
641,2
609,6
558,8
539,7
149,2
692,1
20
34,9
102,000
24"
812,8
47,6
692,1
663,6
609,6
590,5
152,4
749,3
20
34,9
119,000
*
The data "J" corresponds to the STD schedule

 

 

ANSI/ASME/ASA B16.5 300lb/sq.in. Flange WN-RF
ø
D
b
g
m
a
J*
h
k
Holes
l
Kg.
1/2"
95,2
14,3
34,9
38,1
21,3
15,7
52,4
66,7
4
15,9
0,900
3/4"
117,5
15,9
42,9
47,6
26,7
20,8
57,1
82,5
4
19,0
1,500
1"
123,8
17,5
50,8
54,0
33,5
26,7
61,9
88,9
4
19,0
1,900
1 1/4"
133,3
19,0
63,5
63,5
42,2
35,1
65,1
98,4
4
19,0
2,600
1 1/2"
155,6
20,6
73,0
69,8
48,3
40,9
68,3
114,3
4
22,2
3,300
2"
165,1
22,2
92,1
84,1
60,3
52,6
69,8
127,0
8
19,0
3,600
2 1/2"
190,5
25,4
104,8
100,0
73,1
62,7
76,2
149,2
8
22,2
5,400
3"
209,5
28,6
127,0
117,5
88,9
78,0
79,4
168,3
8
22,2
7,400
3 1/2"
228,6
30,2
139,7
133,3
101,6
90,2
81,0
184,1
8
22,2
8,900
4"
254,0
31,7
157,2
146,0
114,3
102,4
85,7
200,0
8
22,2
11,900
5"
279,4
34,9
185,7
177,8
141,2
128,3
98,4
234,9
8
22,2
16,000
6"
317,5
36,5
215,9
206,4
168,4
154,2
98,4
269,9
12
22,2
20,200
8"
381,0
41,3
269,9
260,3
219,1
202,7
111,1
330,2
12
25,4
31,000
10"
444,5
47,6
323,4
320,7
273,0
254,5
117,5
387,3
16
28,6
44,300
12"
520,7
50,8
381,0
374,6
323,8
304,8
130,2
450,8
16
31,7
64,000
14"
584,2
54,0
412,7
425,4
355,6
336,5
142,9
514,3
20
31,7
88,000
16"
647,7
57,1
469,9
482,6
406,4
387,3
146,0
571,5
20
34,9
113,000
18"
711,2
60,3
533,4
533,4
457,2
438,1
158,7
628,6
24
34,9
134,000
20"
774,7
63,5
584,2
587,4
508,0
488,9
161,9
685,8
24
34,9
171,000
22"
838,2
66,7
641,2
641,2
558,8
539,7
165,1
742,9
24
41,3
195,000
24"
914,4
69,8
692,1
701,7
609,6
590,5
168,3
812,8
24
41,3
238,000
*
The data "J" corresponds to the STD schedule

 

ANSI/ASME/ASA B16.5 600lb/sq.in. Flange WN-RF
ø
D
b
g
m
J
h
k
Holes
l
Kg.
1/2"
95,2
14,3
34,9
38,1
22,3
22,2
66,7
4
15,9
0,800
3/4"
117,5
15,9
42,9
47,6
27,7
25,4
82,5
4
19,0
1,400
1"
123,8
17,5
50,8
54,0
34,5
27,0
88,9
4
19,0
1,600
1 1/4"
133,3
20,6
63,5
63,5
43,2
28,6
98,4
4
19,0
2,100
1 1/2"
155,6
22,2
73,0
69,8
49,5
31,7
114,3
4
22,2
3,100
2"
165,1
25,4
92,1
84,1
62,0
36,5
127,0
8
19,0
3,700
2 1/2"
190,5
28,6
104,8
100,0
74,7
41,3
149,2
8
22,2
5,400
3"
209,5
31,7
127,0
117,5
90,7
46,0
168,3
8
22,2
7,300
3 1/2"
228,6
34,9
139,7
133,3
103,4
49,2
184,1
8
25,4
8,900
4"
273,0
38,1
157,2
152,4
116,1
54,0
215,9
8
25,4
11,800
5"
330,2
44,4
185,7
188,9
143,8
60,3
266,7
8
28,6
24,500
6"
355,6
47,6
215,9
222,2
170,7
66,7
292,1
12
28,6
29,500
8"
419,1
55,6
269,9
273,0
221,5
76,2
349,2
12
31,7
43,000
10"
508,0
63,5
323,8
342,8
276,3
85,7
431,8
16
34,9
70,000
12"
558,8
66,7
381,0
400,0
327,1
92,1
488,9
20
34,9
86,000
14"
603,2
69,8
412,7
431,8
359,1
93,7
527,0
20
38,1
100,000
16"
685,8
76,2
469,9
495,3
410,5
106,4
603,2
20
41,3
142,000
18"
742,9
82,5
533,4
546,1
461,8
117,5
654,0
20
44,4
175,000
20"
812,8
88,9
584,2
609,6
513,1
127,0
723,9
24
44,4
232,000
22"
869,9
95,2
641,2
666,7
564,4
133,3
777,9
24
47,6
292,000
24"
939,8
101,6
692,1
717,5
615,9
139,7
838,2
24
50,8
330,000

 

Weld Neck Flange Dimensions Class 900
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 120 22.3 38 21.3 60 Refer Note 34.9 7 82.6 1.6
3/4 20 130 25.4 44 26.7 70 42.9 7 88.9 1.6
1 25 150 28.6 52 33.4 73 50.8 7 101.6 1.6
1 1/4 32 160 28.6 64 42.2 73 63.5 7 111.1 1.6
1 1/2 40 180 31.8 70 48.3 83 73 7 123.8 1.6
2 50 215 38.1 105 60.3 102 92.1 7 165.1 1.6
2 1/2 65 245 41.3 124 73 105 104.8 7 190.5 1.6
3 80 240 38.1 127 88.9 102 127 7 190.5 1.6
4 100 290 44.5 159 114.3 114 157.2 7 235 1.6
5 125 350 50.8 190 141.3 127 185.7 7 279.4 1.6
6 150 380 55.6 235 168.3 140 215.9 7 317.5 1.6
8 200 470 63.5 298 219.1 162 269.9 7 393.7 1.6
10 250 545 69.9 368 273 184 323.8 7 469.9 1.6
12 300 610 79.4 419 323.8 200 381 7 533.4 1.6
14 350 640 85.8 451 355.6 213 412.8 7 558.8 1.6
16 400 705 88.9 508 406.4 216 469.9 7 616 1.6
18 450 785 101.6 565 457 229 533.4 7 685.8 1.6
20 500 855 108 622 508 248 584.2 7 749.3 1.6
24 600 1040 139.7 749 610 292 692.2 7 901.7 1.6

 

Class 1500 Weld Neck Flange Dimensions
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 120 22.3 38 21.3 60 Refer Note 34.9 7 82.6 1.6
3/4 20 130 25.4 44 26.7 70 42.9 7 88.9 1.6
1 25 150 28.6 52 33.4 73 50.8 7 101.6 1.6
1 1/4 32 160 28.6 64 42.2 73 63.5 7 111.1 1.6
1 1/2 40 180 31.8 70 48.3 83 73 7 123.8 1.6
2 50 215 38.1 105 60.3 102 92.1 7 165.1 1.6
2 1/2 65 245 41.3 124 73 105 104.8 7 190.5 1.6
3 80 265 47.7 133 88.9 117 127 7 203.2 1.6
4 100 310 54 162 114.3 124 157.2 7 241.3 1.6
5 125 375 73.1 197 141.3 156 185.7 7 292.1 1.6
6 150 395 82.6 229 168.3 171 215.9 7 317.5 1.6
8 200 485 92.1 292 219.1 213 269.9 7 393.7 1.6
10 250 585 108 368 273 254 323.8 7 482.6 1.6
12 300 675 123.9 451 323.8 283 381 7 571.5 1.6
14 350 750 133.4 495 355.6 298 412.8 7 635 1.6
16 400 825 146.1 552 406.4 311 469.9 7 704.8 1.6
18 450 915 162 597 457 327 533.4 7 774.7 1.6
20 500 985 177.8 641 508 356 584.2 7 831.8 1.6
24 600 1170 203.2 762 610 406 692.2 7 990.6 1.6

Note: Welding Neck bore is derived from the pipe schedule

 

Class 2500 Weld Neck Flange Dimensions
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 135 30.2 43 21.3 73 Refer Note 34.9 7 88.9 1.6
3/4 20 140 31.8 51 26.7 79 42.9 7 95.2 1.6
1 25 160 35 57 33.4 89 50.8 7 108 1.6
1 1/4 32 185 38.1 73 42.2 95 63.5 7 130.2 1.6
1 1/2 40 205 44.5 79 48.3 111 73 7 146 1.6
2 50 235 50.9 95 60.3 127 92.1 7 171.4 1.6
2 1/2 65 265 57.2 114 73 143 104.8 7 196.8 1.6
3 80 305 66.7 133 88.9 168 127 7 228.6 1.6
4 100 355 76.2 165 114.3 190 157.2 7 273 1.6
5 125 420 92.1 203 141.3 229 185.7 7 323.8 1.6
6 150 485 108 235 168.3 273 215.9 7 368.3 1.6
8 200 550 127 305 219.1 318 269.9 7 438.2 1.6
10 250 675 165.1 375 273 419 323.8 7 539.8 1.6
12 300 760 184.2 441 323.8 464 381 7 619.1 1.6

Note: Welding Neck bore is derived from the pipe schedule

 

JIS Weld Neck Flange Dimensions

JIS 16K Weld Neck Flange Dimensions, JIS 20K Weld Neck Flange Dimensions

Nominal Outside Inside Outside Sectional Dimensions of Flange Bolt Hole Nominal Approx.
Dia. of Dia. of Dia. of Dia. of t T Dia. of Hub r Dia. of Dia. of Bolt. Number Hole Bolt Weight
Flange Steel Flange Flange a b Face Raised Face Circle of Bolt Dia. Size (kg)
　 Pipe do D f g Dia Holes h BL SOH
10 17.3 17.8 90 12 16 26 28 4 1 46 65 4 15 M12 0.53 0.52
15 21.7 22.2 95 12 16 30 32 4 1 51 70 4 15 M12 0.6 0.58
20 27.2 27.7 100 14 20 38 42 4 1 56 75 4 15 M12 0.79 0.75
25 34 34.5 125 14 20 46 50 4 1 67 90 4 19 M16 1.22 1.16
32 42.7 43.2 135 16 22 56 60 5 2 76 100 4 19 M16 1.66 1.53
40 48.6 49.1 140 16 24 62 66 5 2 81 105 4 19 M16 1.79 1.64
50 60.5 61.1 155 16 24 76 80 5 2 96 120 8 19 M16 2.09 1.83
65 76.3 77.1 175 18 26 94 98 5 2 116 140 8 19 M16 3.08 2.58
80 89.1 90 200 20 28 108 112 6 2 132 160 8 23 M20 4.41 3.61
-90 101.6 102.6 210 20 30 120 124 6 2 145 170 8 23 M20 4.92 3.89
100 114.3 115.4 225 22 34 134 138 6 2 160 185 8 23 M20 6.29 4.87
125 139.8 141.2 270 22 34 164 170 6 2 195 225 8 25 M22 9.21 7.09
150 165.2 166.6 305 24 38 196 202 6 2 230 260 12 25 M22 12.7 9.57
200 216.3 218 350 26 40 244 252 6 2 275 305 12 25 M22 18.4 12
250 267.4 269.5 430 28 44 304 312 6 2 345 380 12 27 M24 30.4 20.1
300 318.5 321 480 30 48 354 364 8 3 395 430 16 27 M24 40.5 24.3
350 355.6 358.1 540 34 52 398 408 8 3 440 480 16 33 M30×3 57.5 34.4
400 406.4 409 605 38 60 446 456 10 3 495 540 16 33 M30×3 81.7 47.4
450 457.2 460 675 40 64 504 514 10 3 560 605 20 33 M30×3 107 61.8
500 508 511 730 42 68 558 568 10 3 615 660 20 33 M30×3 132 73.7
-550 558.8 562 795 44 70 612 622 10 3 670 720 20 39 M36×3 163 87.9
600 609.6 613 845 46 74 666 676 10 3 720 770 24 39 M36×3 192 98.4
650 660.4 664 895 48 77 704 726 10 5 770 820 24 39 M36×3 – –
700 711.2 715 960 50 80 754 776 10 5 820 875 24 42 M39×3 – –
750 762 766 1020 52 83 806 832 10 5 880 935 24 42 M39×3 – –
800 812.8 817 1085 54 86 865 885 10 5 930 990 24 48 M45×3 – –
850 863.6 868 1135 56 89 916 936 10 5 980 1040 24 48 M45×3 – –
900 914.4 919 1185 58 93 968 986 10 5 1030 1090 28 48 M45×3 – –
1000 1016 1021 1320 62 99 1070 1098 12 5 1140 1210 28 56 M52×3 – –
1100 1117.6 1123 1420 66 105 1180 1200 12 15 1240 1310 32 56 M52×3 – –
1200 1219.2 1225 1530 70 112 1282 1302 12 5 1350 1420 32 56 M52×3 – –
1300 1320.8 1326 1645 74 – – – – 5 1450 1530 32 62 M56×3 – –
1350 1371.6 1377 1700 76 – – – – 5 1510 1590 32 62 M56×3 – –
1400 1422.4 1428 1755 78 – – – – 5 1560 1640 36 62 M56×3 – –
1500 1524 1529 1865 80 – – – – 5 1670 1750 36 62 M56×3 – –

 

ANSI B16.5 Weld Neck Flange Schedule Chart, Weld Neck Flange Thickness Chart
WELDING NECK FLANGES BORES (in inchines)
Nom
Pipe
Size		 Outside
Diam		 Sched
10		 Sched
20		 Sched
30		 Std.
Wall		 Sched
40		 Sched
60		 Extra
Strong		 Sched
80		 Sched
100		 Sched
120		 Sched
140		 Sched
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 8.125 8.071 7.981 7.981 7.813 7.625 7.625 7.437 7.187 7.001 6.813 6.875
10” 10.750 10.420 10.250 10.136 10.020 10.020 9.750 9.750 9.562 9.312 9.062 8.750 8.500 8.750
12” 12.750 12.390 12.250 12.090 12.000 11.938 11.626 11.750 11.374 11.062 10.750 10.500 10.126 10.750
14” 14.000 13.500 13.376 13.250 13.250 13.124 12.812 13.000 12.500 12.124 11.814 11.500 11.188 –
16” 16.000 15.500 15.376 15.250 15.250 15.000 14.688 15.000 14.312 13.938 13.564 13.124 12.812 –
18” 18.000 17.500 17.376 17.124 17.250 16.876 16.500 17.000 16.124 15.688 15.250 14.876 14.438 –
20” 20.000 19.500 19.250 19.000 19.250 18.812 18.376 19.000 17.938 17.438 17.000 16.500 16.062 –
24” 24.000 23.500 23.250 22.876 23.250 22.624 22.062 23.000 21.562 20.938 20.376 19.876 19.312 –
30” 30.000 29.376 29.000 28.750 29.250 – – 29.000 – – – – – –
36” 36.000 35.376 35.000 34.750 35.250 34.500 – 35.000 – – – – – –
42” 42.000 – – – 41.250 – – 41.000 – – – – – –

 

Weld Neck Flange Weight Chart, Weld Neck Flange Weight in KG
ANSI B16.5 WELD NECK FLANGES WEIGHT (KGS)
Nom
Pipe
Size		 150# 300# 600# 900# 1500# 2500#
  WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K
1/2” 0.7 0.4 0.5 0.8 0.7 0.8 0.9 0.8 0.8 2.1 1.8 1.9 2.1 1.8 1.9 3.2 3 3
3/4” 0.8 0.7 0.8 1.4 1.2 1.2 1.6 1.4 1.4 2.7 2.4 2.7 2.7 2.4 2.7 3.6 4 4.5
1” 1.1 0.8 0.9 1.7 1.4 1.5 1.9 1.7 1.7 3.9 3.6 3.7 3.9 3.6 3.7 5.4 5 5
1.1/4” 1.5 1.2 1.3 2.2 1.8 2 2.6 2.1 2.4 4.5 4.1 4.3 4.5 4.1 4.3 7.8 8 8
1.1/2” 1.8 1.4 1.6 3.2 2.7 2.9 3.6 3.1 3.4 6.2 5.4 5.9 6.2 5.4 5.9 11.5 11 11
2” 2.7 2.2 2.6 3.6 3.2 3.5 4.7 3.9 4.4 11.3 10.5 11.3 11.3 10.5 11.3 19 17 17
2.1/2” 4.4 3.5 4.1 5.4 4.5 5.3 4.8 5.4 6.8 16.3 15.8 16 16.3 15.8 16 24 25 25
3” 5.2 3.8 5.1 7.3 5.9 7.2 8.7 7.3 8.9 15 12.3 16.8 21 21.5 19.5 42.6 38 39
3-1/2” 6.4 5 6.5 8.9 7.5 9.2 11.6 9 12.7 – – – – – – – – –
4” 7.5 5.6 7.5 11.8 10 12.2 18.4 16.5 18.6 24 23.2 24.5 31.8 31 33 64 58 60
5” 9.2 6.5 9.2 16 12.5 16 31 28.5 30.8 38.5 37.5 39.5 59 58.8 60 111 95 101
6” 11.0 8.1 11.8 20.2 16.5 22 37 36.2 38 50 48.3 51.5 72 74 75 171 146 156
8” 18.4 13 20.4 31.2 25.5 36 54.5 51.5 62.2 85 75 89 124 112 125 261 220 242
10” 25.5 18.4 31 44.3 35 55 98.5 76.2 102 123 110 131 207 184 215 485 420 465
12” 37 28.5 47 63.5 52 82.5 105 89.5 132 168 146 187 306 264 316 698 590 665
14” 51 37.5 60 86 73 108 150 102 158 198 172 224 416 – – – – –
16” 61.5 44.5 61 112 88 139 177 150 225 225 192 259 567 – – – – –
18” 71.5 54 93 141 115 178 228 180 285 318 272 383 736 – – – – –
20” 85 72 127 173 139 228 285 231 365 376 330 482 929 – – – – –
24” 119 95 190 248 212 350 372 330 532 680 632 905 1504 – – – – –

 

Dimensional Tolerances of Weld-Neck Flanges ASME B16.5/ ANSI B16.5 Weld Neck Flange Tolerances
Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm		 Inside Diameter
not applicable
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm		 Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
not applicable		 Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0		 Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm


ASTM Specification of Weld Neck Flanges
  •  Alloy Steel High-Temp Weld Neck Flanges
    •      A182 Gr F1 Weld Neck Flanges
    •      A182 Gr F11 Weld Neck Flanges
    •      A182 Gr F12 Weld Neck Flanges
    •      A182 Gr F22 Weld Neck Flanges
    •      A182 Gr F5 Weld Neck Flanges
    •      A182 Gr F9 Weld Neck Flanges
  •  Alloy Steel Low-Temp Weld Neck Flanges
    •      A350 Gr LF2 Weld Neck Flanges
    •      A350 Gr LF3 Weld Neck Flanges
  •  Austenitic Stainless Steel Weld Neck Flanges
    •      A182 Gr F304 Weld Neck Flanges
    •      A182 Gr F316 Weld Neck Flanges
    •      A182 Gr F321 Weld Neck Flanges
    •      A182 Gr F347 Weld Neck Flanges
    •      A182 Gr F304L Weld Neck Flanges
    •      A182 Gr F316L Weld Neck Flanges
    •      A182 Gr F317 Weld Neck Flanges
    •      A182 Gr F317L Weld Neck Flanges
    •      A182 Gr F321 Weld Neck Flanges
    •      A182 Gr F310 Weld Neck Flanges
    •      A182 Gr 347 Weld Neck Flanges
  •  Nickel Alloy Weld Neck Flanges
    •      ASTM B564 Weld Neck Flanges
    •      astm b564 uns n06600 Weld Neck Flanges
    •      astm b564 uns n06625 Weld Neck Flanges
    •      astm b564 uns no4400 Weld Neck Flanges
    •      astm b564 uns n08810 Weld Neck Flanges
    •      astm b564 uns n08811 Weld Neck Flanges
    •      astm b564 uns n08825 Weld Neck Flanges
    •      astm b564 uns n04400 Weld Neck Flanges
    •      astm b564 uns n10276 Weld Neck Flanges
    •      astm b564 uns n10665 Weld Neck Flanges
  •  Titanium Weld Neck Flanges
    •      astm b381 grade f2 Weld Neck Flanges
    •      astm b381 f5 Weld Neck Flanges
    •      astm b381 f3 Weld Neck Flanges
    •      astm b381 f12 Weld Neck Flanges
    •      astm b381 f7 Weld Neck Flanges
    •      Other grades: ASTM B381 F1, F2, F2H, F3, F4, F5, F6, F7,   F7H, F9, F10, F11, F12, F13, F14, F15, F16, F16H, F17, F18,   F19, F20, F21, F23, F24, F25, F26 , F26H, F27, F28, F29, F30,   F31, F32, F33, F34, F35, F36, F37, F38 Weld Neck Flanges
    •  Carbon Steel Weld Neck Flanges
      •      A105 Weld Neck Flanges

 

Type of Weld Neck Flanges we produce
Weld Neck Flanges Class 900
Weld Neck Flanges Flat Face
Weld Neck Flanges Pn16
Kf Weld Neck Flanges
Weld Neck Flanges Class 2500
Weld Neck Flanges Slip On
Weld Neck Flanges Din 2527
Weld Neck Flanges Weight 150# 
Weld Neck Flanges Din 2576
Weld Neck Flanges With 1/2 Npt
Weld Neck Flanges Pn 64
Weld Neck Flanges Ansi B16.5 150
Weld Neck Flanges Class 150
Weld Neck Flanges Threaded
Weld Neck Flanges Pn10
Weld Neck Flanges B16.47
Weld Neck Flanges Pn40
Weld Neck Flanges Rtj 900
Weld Neck Flanges Pn 160
Weld Neck Flanges Rtj
Weld Neck Flanges Class 1500
Weld Neck Flanges Npt
Weld Neck Flanges Dn150 Pn16
Weld Neck Flanges Jis 5k
Weld Neck Flanges Class 600
Weld Neck Flanges Jis B2220
Weld Neck Flanges Asme B16.5 Class 300
Weld Neck Flanges Ring Type Joint
Weld Neck Flanges Din 2633
Weld Neck Flanges Rtj 1500
Weld Neck Flanges Class 300
Weld Neck Flanges With Threaded Hole
Weld Neck Flanges Din En 1092-1
Weld Neck Flanges Jis 10k

 

Weld Neck Flanges Material
Stainless Steel Weld Neck Flanges ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Carbon Steel Weld Neck Flanges ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Titanium Weld Neck Flanges ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7
ASTM  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5
Alloy Steel Weld Neck Flanges ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Copper Nickel Weld Neck Flanges ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Copper Weld Neck Flanges T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Inconel Weld Neck Flanges ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 Weld Neck Flanges
Brass Weld Neck Flanges 3602 / 2604 / H59 / H62 / etc.
Monel Weld Neck Flanges ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Hastelloy Weld Neck Flanges ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges
Aluminium Weld Neck Flanges 5052 /6061/ 6063 / 2017 / 7075 / etc.
Alloy 20 Weld Neck Flanges ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Duplex Weld Neck Flanges S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Nickel Weld Neck Flanges ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Incoloy Weld Neck Flanges ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges
Super Duplex Weld Neck Flanges S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Other Weld Neck Flanges material Tin bronze, Alumunum bronze, Lead bronze
Nimonic Weld Neck Flanges Nimonic 75, Nimonic 80A, Nimonic 90
254 Smo Weld Neck Flanges ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547

These Carbon Steel Weld Neck Flange Gasket are available in DIN, EN, BS, ISO, JIS, or ANSI standards from prestigious quality Weld Neck Flange Manufacturers in the UK and India.

 

Weld Neck Flange Types
ANSI B16.5 class 150 SWRF Flange Stockholder
High Quality SWRF Flanges
Weld Neck Flange Class 900
Weld Neck Flange Welding
4 Bolt Weld Neck flange
ANSI 150 Weld Neck Flange
Weld Neck Flange Class 2500
1 inch Weld Neck Flange
Flat Face SWRF Flange
Weld Neck Flange Class 900
Weld Neck Flange PN16
ASME B16.47 Series A and B SWRF Flanges
2 inch Weld Neck Flange
ANSI B16.5 Class 150 Weld Neck Flanges
ANSI B16.5 Weld Neck Flanges
Weld Neck Flange Dimensions
ASME B16.5 SWRF Flanges
Raised Faced Weld Neck Flanges
Stainless Steel Weld Neck Flanges Suppliers
Weld Neck Tube Flange
Weld Neck Raised Face Flange
300# Weld Neck Flange
Weld Neck Flange Class 600
Weld Neck Pipe Flanges
Weld Neck RTJ Flange
6 inch Weld Neck Flange
Weld Neck Ring Type Joint Flanges
3 inch Weld Neck Flange
4 inch Weld Neck Flange
Weld Neck Flange Class 300

Find here Weld Neck Flange Flat Face & Raised Face Dimensions, Weld Neck Flange Thickness Calculation For Pressure Vessel, Weld Neck Flange Thickness Calculation Formula Xls

Weld Neck Flange Uses
  • Power Plant
  • Oil & Gas
  • Cement
  • Chemical
  • Fertilizers
  • Sugar
  • Petrochemical
  • Refineries
  • Breweries
  • Nuclear Power
  • Paper
  •  Weld Neck Flange For Hydrotest
  •  Weld Neck Flange For Pressure Test
  • Offshore
  • Mining
  • Construction
  • Shipbuilding
  • Engineering Co. &
  • Oil Mills
  • Steel Plant
  • Railway
  • Defence
  • Ports
  • Government Org. etc.
  • Weld Neck Flange For Hdpe Pipe
  • Weld Neck Flange Oil And Gas

 

Stock Of Weld Neck Flange
  •  Slip Weld Neck Flange
  •  Tapped Weld Neck Flange
  •  Paddle Weld Neck Flange
  •  Victaulic Weld Neck Flange
  •  Api Weld Neck Flange
  •  Asme Weld Neck Flange
  •  Aluminum Weld Neck Flange
  •  Weld Neck Flange Asme B16.5
  •  Weld Neck Flange A105
  •  Weld Neck flange vs weld neck flange
  •  Weld Neck Flange Asme
  •  Weld Neck Flange Awwa C207 Class D
  •  Weld Neck Flange Api 6a
  •  Weld Neck Flange Ansi 600
  •  Weld Neck Flange B16.5
  •  Weld Neck Flange Bolts
  •  Grayloc Weld Neck Flange
  •  Weld Neck Flange Hdpe
  •  Weld Neck Flange Hub
  •  Weld Neck Flange With Tap
  •  Weld Neck Flange With Hole
  •  Weld Neck Flange Water Main
  •  Weld Neck Flange With Drain
  •  Weld Neck Flange With Hub
  •  Weld Neck Flange Tapped
  •  Weld Neck Flange Vessel
  •  Blind Orifice Flange
  •  Weld Neck Flange Slip On
  •  Weld Neck Flange Ring Type Joint
  •  Harga Weld Neck Flange Jis 10k
  •  Jual Weld Neck Flange
  •  Weld Neck Flange Pipe
  •  Weld Neck Flange Pn16
  •  Weld Neck Flange Plate
  •  Weld Neck Flange Raised Face
  •  Weld Neck Flange Rtj
  •  Weld Neck Flange En 1092-1
  •  Weld Neck Flange En 1092
  •  Weld Neck Flange End Connection
  •  Weld Neck Flange Din En 1092-1
  •  Weld Neck Flange Face
  •  Weld Neck Flange Class 150
  •  Weld Neck Flange Cap
  •  Weld Neck Flange Carbon Steel
  •  Weld Neck Flange Class 300
  •  Weld Neck Flange Class 600
  •  Weld Neck Flange Drilled And Tapped
  •  Weld Neck Flange B16.47
  •  Weld Neck Flange Brass
  •  Weld Neck Flange With Bleed Valve
  •  Weld Neck Flange Series B
  •  Weld Neck Flange Asme B16.5 Class 300
  •  Kf Weld Neck Flange
  •  Weld Neck Flange Lifting Device
  •  Weld Neck Flange Lifting Lug
  •  Weld Neck Flange Lockout
  •  Weld Neck Flange Npt
  •  Weld Neck Flange Nozzle
  •  Weld Neck Flange Nps
  •  Weld Neck Flange Need Gasket
  •  Weld Neck Flange With Npt Tap
  •  Weld Neck Flange With Npt Thread
  •  Weld Neck Flange With Npt Hole
  •  Weld Neck Flange Od Chart
  •  Weld Neck Flange On P&Id
  •  Weld Neck Flange Ring Type Joint
  •  Weld Neck Flange Rtj 900
  •  Weld Neck Flange Rtj 1500
  •  Weld Neck Flange Rtj 2500
  •  Weld Neck Flange Need Gasket
  •  Blind Kidney Flange
  •  Weld Neck Flange Plumbing

 

makers of weld neck flanges in India, see Weighing of tapped, paddled, victaulic, and ASME 16.48 spectacle weld neck flanges as well as their dimensions, stocking distributors of super duplex, titanium, and nickel alloy weld neck flanges in India, view Jis 10k Pressure Rating Weld Neck Flange and 8 Aluminum Weld Neck Flange

 

flange