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Steel Weld Neck Flanges 
Presenting an array of steel weld neck flanges. These
weld neck steel flanges are manufactured from high quality steel in
accordance with set industrial norms to provide the clients maximum
satisfaction. We use comprehensive quality control systems and latest
technology in manufacturing our products. These stainless steel weld neck
flanges are acknowledged for their durability and resistance to corrosion in
the global market. These weld neck steel flanges are available in varied
dimensions which suits the demands of clients at very reasonable prices.
Stainless Steel : ASTM A 182, A 240
Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H,
317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex
stainless steel UNS S32750
Carbon Steel : ASTM A 105, ASTM A 181
Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91
Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy
800, 825, Hastelloy C22,C276
ANSI B 1500 Class
| Pipe |
Flange Dimension |
Neck Dimension
|
RF |
Drilling
Dimension |
| Size |
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
| Outer Diameter mm |
Overall Dia mm |
Inside Dia mm |
Plate Thickness min mm |
Total Height mm |
Dia at Weld Bevel mm |
Hub Dia mm |
Face Dia mm |
Number of Holes |
Bolt Hole Dia mm |
Dia of Circle of Holes mm |
| ½ |
21.30 |
120.6 |
 |
22.30 |
60.45 |
21.30 |
38.10 |
35.00 |
4 |
22.30 |
82.50 |
| ¾ |
26.70 |
130.0 |
25.40 |
69.85 |
26.70 |
44.00 |
42.90 |
4 |
22.30 |
88.90 |
| 1 |
33.40 |
149.3 |
28.40 |
73.15 |
33.50 |
52.30 |
50.80 |
4 |
25.40 |
101.6 |
| 1 ¼ |
42.20 |
158.7 |
28.40 |
73.15 |
42.20 |
63.50 |
63.50 |
4 |
25.40 |
111.2 |
| 1 ½ |
48.30 |
177.8 |
31.70 |
82.50 |
48.30 |
69.85 |
73.15 |
4 |
28.40 |
123.9 |
| 2 |
60.30 |
215.9 |
38.10 |
101.6 |
60.45 |
104.6 |
91.90 |
8 |
25.40 |
165.1 |
| 2 ½ |
73.00 |
244.3 |
41.10 |
104.6 |
73.15 |
123.9 |
104.6 |
8 |
28.40 |
190.5 |
| 3 |
88.90 |
266.7 |
47.70 |
177.3 |
88.90 |
133.3 |
127.0 |
8 |
31.70 |
203.2 |
| 4 |
114.3 |
311.1 |
53.80 |
123.9 |
114.3 |
162.0 |
157.2 |
8 |
35.00 |
241.3 |
| 5 |
141.3 |
374.6 |
73.15 |
155.4 |
141.2 |
196.8 |
185.7 |
8 |
41.10 |
292.1 |
| 6 |
168.3 |
393.7 |
82.50 |
171.4 |
168.4 |
228.6 |
215.9 |
12 |
38.10 |
317.5 |
| 8 |
219.1 |
482.6 |
91.90 |
212.8 |
219.2 |
292.1 |
269.7 |
12 |
44.40 |
393.7 |
| 10 |
273.0 |
584.2 |
107.9 |
254.0 |
273.0 |
368.3 |
323.8 |
12 |
50.80 |
482.6 |
| 12 |
323.8 |
673.1 |
123.9 |
282.4 |
323.8 |
450.8 |
381.0 |
16 |
53.80 |
571.5 |
| 14 |
355.6 |
749.3 |
133.3 |
298.4 |
355.6 |
495.3 |
412.7 |
16 |
60.45 |
635.0 |
| 16 |
406.4 |
825.5 |
146.0 |
311.1 |
406.4 |
552.4 |
469.9 |
16 |
66.55 |
704.8 |
| 18 |
457.2 |
914.4 |
162.0 |
327.1 |
457.2 |
596.9 |
533.4 |
16 |
73.15 |
774.7 |
| 20 |
508.0 |
984.2 |
177.8 |
355.6 |
508.0 |
641.3 |
584.2 |
16 |
79.25 |
831.8 |
| 24 |
609.6 |
1168.4 |
203.2 |
406.4 |
609.6 |
762.0 |
692.1 |
16 |
91.90 |
990.6 |
Notes
- Steel weld neck flanges dimensions B corresponds to the pipe
inside diameter. Values quoted assume 40S/Standard wall thickness
- Steel weld neck flanges weights are based on manufacturer's data
and are approximate.
|
ANSI B 2500 Class
| Pipe |
Flange Dimension |
Neck Dimension
|
RF |
Drilling
Dimension |
| Size |
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
| Outer Diameter mm |
Overall Dia mm |
Inside Dia mm |
Plate Thickness min mm |
Total Height mm |
Dia at Weld Bevel mm |
Hub Dia mm |
Face Dia mm |
Number of Holes |
Bolt Hole Dia mm |
Dia of Circle of Holes mm |
| ½ |
21.3 |
133.4 |
|
30.2 |
73.15 |
21.3 |
42.9 |
35 |
4 |
22.4 |
88.9 |
| ¾ |
26.7 |
139.7 |
31.75 |
79.25 |
26.7 |
50.8 |
42.9 |
4 |
22.4 |
95.3 |
| 1 |
33.4 |
158.8 |
35.1 |
88.9 |
33.5 |
57.15 |
50.8 |
4 |
25.4 |
108 |
| 1 ¼ |
42.2 |
184.2 |
38.1 |
95.3 |
42.2 |
73.15 |
63.5 |
4 |
28.4 |
130 |
| 1 ½ |
48.3 |
203.2 |
44.5 |
111.3 |
48.3 |
79.25 |
73.15 |
4 |
31.75 |
146.1 |
| 2 |
60.3 |
235 |
50.8 |
127 |
60.45 |
95.3 |
91.9 |
8 |
28.4 |
171.5 |
| 2 ½ |
73 |
266.7 |
57.15 |
142.7 |
73.15 |
114.3 |
104.6 |
8 |
31.75 |
196.9 |
| 3 |
88.9 |
304.8 |
66.55 |
168.1 |
88.9 |
133.4 |
127 |
1.38 |
35.1 |
228.6 |
| 4 |
114.3 |
355.6 |
76.2 |
190.5 |
114.3 |
165.1 |
157.2 |
8 |
41.1 |
273.1 |
| 5 |
141.3 |
419.1 |
91.9 |
228.6 |
141.2 |
203.2 |
185.7 |
8 |
47.8 |
323.9 |
| 6 |
168.3 |
482.6 |
108 |
273.1 |
168.4 |
235 |
215.9 |
8 |
53.8 |
368.3 |
| 8 |
219.1 |
552.5 |
127 |
317.5 |
219.2 |
304.8 |
269.7 |
12 |
53.8 |
438.2 |
| 10 |
273 |
673.1 |
165.1 |
419.1 |
273 |
374.7 |
323.8 |
12 |
66.55 |
539.8 |
| 12 |
323.8 |
762 |
184.2 |
463.6 |
323.8 |
441.5 |
381 |
12 |
73.15 |
619.3 |
Notes
- ANSI B 2500 Class dimensions B corresponds to the pipe inside
diameter. Values quoted assume 40S/Standard wall thickness
- Weights of ANSI B 2500 Class flanges are based on manufacturer's
data and are approximate.
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