Weldneck flanges
Arcellor Controls has reputed name in metal industry as a
Weld Neck Flange Manufacturers India with hogh quality material and standards.
ANSI B16.5 Weld neck flanges have drilled wall thickness which is of equally same dimension existing for matching pipe. Bore will be larger if the pipe is lighter and opposite will be true if pipe is heavier and the bore will be small.
There are two types of weld neck flanges, which are standard and long. Standard weld neck flanges are used in butt weld fittings. We are well known as
Long weld neck flange manufacturers, used with vessel nozzles and equipment.
ANSI B16.5 Reducing Weld Neck flanges are created to match the pipe’s inside diameter or fitting. The reason why it is bored to match is because it reduces the corrosion and turbulence that takes place inside of the pipe.
Our offered Long weld neck flanges are called by this name due to their longer neck as compared to standard flanges. These
Weld Neck Raised flanges are used in industrial applications as nozzles for columns or barrels.
Arcellor Controls as well is significantly reduced in pipeline as bores of flange & pipe match. Due to these reasons weldneck flanges are chosen for critical applications where high pressure and hot-cold temperatures are prevalent. The different kinds of weldneck flanges available are:
- Weld neck flanges – raised face
- Weld neck flanges – flat face
Supplier Of BS10 Table E Weld Neck flange, Weld Neck Flange Schedule 10, Weld Neck Flange Flat Face Dimensions, Weld Neck Flange Raised Face Dimensions,Weld Neck Flange Suppliers UK
Weld Neck Flange Suppliers in UAE, Weld Neck Flange Malaysia, Weld Neck Ring Joint Flange, Weld Neck Flange Size chart, Weld Neck Flange Weight, Weld Neck Flange Schedule Chart
ANSI/ASME B16.5 Weld Neck Flange Specification
Dimensions |
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
Size |
1/2″ (15 NB) to 48″ (1200NB) |
Class |
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. |
DIN |
DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673 |
BS |
BS4504 , BS4504, BS1560, BS10 |
Coating/Surface Treatment |
Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
Flange Face Type |
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Value Added Services |
CNC Machining, Customised Flanges |
Weld Neck Flange Material Specification
Stainless Steel Weld Neck Flanges :
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel Long Weld Neck Flanges :
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel Weld Neck Flanges :
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Low Temperature Carbon Steel Long Weld Neck Flanges :
ASTM A350, LF2, LF3
Alloy Steel Weld Neck Flanges :
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Copper Alloy Steel Weld Neck Flanges :
ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Long Weld Neck Flanges :
ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)
ANSI/ASME B16.5 WELD NECK FLANGE DIMENSIONS, WELD NECK FLANGE SIZE CHART, WELD NECK FLANGE DIMENSIONS IN MM
ANSI B16.5 Long Weld Neck Flange Dimensions, PN16 Weld Neck Flange Dimensions, 4 Weld Neck flange Dimensions

ANSI B16.5 WNRF Flange Dimensions,Weld Neck Flange Raised Face 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 |
90 |
9.6 |
30 |
21.3 |
46 |
Refer Note |
34.9 |
2 |
60.3 |
1.6 |
3/4 |
20 |
100 |
11.2 |
38 |
26.7 |
51 |
42.9 |
2 |
69.9 |
1.6 |
1 |
25 |
110 |
12.7 |
49 |
33.4 |
54 |
50.8 |
2 |
79.4 |
1.6 |
1 1/4 |
32 |
115 |
14.3 |
59 |
42.2 |
56 |
63.5 |
2 |
88.9 |
1.6 |
1 1/2 |
40 |
125 |
15.9 |
65 |
48.3 |
60 |
73 |
2 |
98.4 |
1.6 |
2 |
50 |
150 |
17.5 |
78 |
60.3 |
62 |
92.1 |
2 |
120.7 |
1.6 |
2 1/2 |
65 |
180 |
20.7 |
90 |
73 |
68 |
104.8 |
2 |
139.7 |
1.6 |
3 |
80 |
190 |
22.3 |
108 |
88.9 |
68 |
127 |
2 |
152.4 |
1.6 |
3 1/2 |
90 |
215 |
22.3 |
122 |
101.6 |
70 |
139.7 |
2 |
177.8 |
1.6 |
4 |
100 |
230 |
22.3 |
135 |
114.3 |
75 |
157.2 |
2 |
190.5 |
1.6 |
5 |
125 |
255 |
22.3 |
164 |
141.3 |
87 |
185.7 |
2 |
215.9 |
1.6 |
6 |
150 |
280 |
23.9 |
192 |
168.3 |
87 |
215.9 |
2 |
241.3 |
1.6 |
8 |
200 |
345 |
27 |
246 |
219.1 |
100 |
269.9 |
2 |
298.5 |
1.6 |
10 |
250 |
405 |
28.6 |
305 |
273 |
100 |
323.8 |
2 |
362 |
1.6 |
12 |
300 |
485 |
30.2 |
365 |
323.8 |
113 |
381 |
2 |
431.8 |
1.6 |
14 |
350 |
535 |
33.4 |
400 |
355.6 |
125 |
412.8 |
2 |
476.3 |
1.6 |
16 |
400 |
595 |
35 |
457 |
406.4 |
125 |
469.9 |
2 |
539.8 |
1.6 |
18 |
450 |
635 |
38.1 |
505 |
457.2 |
138 |
533.4 |
2 |
577.9 |
1.6 |
20 |
500 |
700 |
41.3 |
559 |
508 |
143 |
584.2 |
2 |
635 |
1.6 |
24 |
600 |
815 |
46.1 |
663 |
610 |
151 |
692.2 |
2 |
749.3 |
1.6 |
Note: Welding Neck bore is derived from the pipe schedule
CLASS 300 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 |
95 |
12.7 |
38 |
21.3 |
51 |
Refer Note |
34.9 |
2 |
66.7 |
1.6 |
3/4 |
20 |
115 |
14.3 |
48 |
26.7 |
56 |
42.9 |
2 |
82.6 |
1.6 |
1 |
25 |
125 |
15.9 |
54 |
33.4 |
60 |
50.8 |
2 |
88.9 |
1.6 |
1 1/4 |
32 |
135 |
17.5 |
64 |
42.2 |
64 |
63.5 |
2 |
98.4 |
1.6 |
1 1/2 |
40 |
155 |
19.1 |
70 |
48.3 |
67 |
73 |
2 |
114.3 |
1.6 |
2 |
50 |
165 |
20.7 |
84 |
60.3 |
68 |
92.1 |
2 |
127 |
1.6 |
2 1/2 |
65 |
190 |
23.9 |
100 |
73 |
75 |
104.8 |
2 |
149.2 |
1.6 |
3 |
80 |
210 |
27 |
117 |
88.9 |
78 |
127 |
2 |
168.3 |
1.6 |
3 1/2 |
90 |
230 |
28.6 |
133 |
101.6 |
79 |
139.7 |
2 |
184.2 |
1.6 |
4 |
100 |
255 |
30.2 |
146 |
114.3 |
84 |
157.2 |
2 |
200 |
1.6 |
5 |
125 |
280 |
33.4 |
178 |
141.3 |
97 |
185.7 |
2 |
235 |
1.6 |
6 |
150 |
320 |
35 |
206 |
168.3 |
97 |
215.9 |
2 |
269.9 |
1.6 |
8 |
200 |
380 |
39.7 |
260 |
219.1 |
110 |
269.9 |
2 |
330.2 |
1.6 |
10 |
250 |
445 |
46.1 |
321 |
273 |
116 |
323.8 |
2 |
387.4 |
1.6 |
12 |
300 |
520 |
49.3 |
375 |
323.8 |
129 |
381 |
2 |
450.8 |
1.6 |
14 |
350 |
585 |
52.4 |
425 |
355.6 |
141 |
412.8 |
2 |
514.4 |
1.6 |
16 |
400 |
650 |
55.6 |
483 |
406.4 |
144 |
469.9 |
2 |
571.5 |
1.6 |
18 |
450 |
710 |
58.8 |
533 |
457 |
157 |
533.4 |
2 |
628.6 |
1.6 |
20 |
500 |
775 |
62 |
587 |
508 |
160 |
584.2 |
2 |
685.8 |
1.6 |
24 |
600 |
915 |
68.3 |
702 |
610 |
167 |
692.2 |
2 |
812.8 |
1.6 |
Note: Welding Neck bore is derived from the pipe schedule
WELD NECK FLANGE CLASS 400 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 |
95 |
14.3 |
38 |
21.3 |
52 |
Refer Note |
34.9 |
7 |
66.7 |
1.6 |
3/4 |
20 |
115 |
15.9 |
48 |
26.7 |
57 |
42.9 |
7 |
82.6 |
1.6 |
1 |
25 |
125 |
17.5 |
54 |
33.4 |
62 |
50.8 |
7 |
88.9 |
1.6 |
1 1/4 |
32 |
135 |
20.7 |
64 |
42.2 |
67 |
63.5 |
7 |
98.4 |
1.6 |
1 1/2 |
40 |
155 |
22.3 |
70 |
48.3 |
70 |
73 |
7 |
114.3 |
1.6 |
2 |
50 |
165 |
25.4 |
84 |
60.3 |
73 |
92.1 |
7 |
127 |
1.6 |
2 1/2 |
65 |
190 |
28.6 |
100 |
73 |
79 |
104.8 |
7 |
149.2 |
1.6 |
3 |
80 |
210 |
31.8 |
117 |
88.9 |
83 |
127 |
7 |
168.3 |
1.6 |
3 1/2 |
90 |
230 |
35 |
133 |
101.6 |
86 |
139.7 |
7 |
184.2 |
1.6 |
4 |
100 |
255 |
35 |
146 |
114.3 |
89 |
157.2 |
7 |
200 |
1.6 |
5 |
125 |
280 |
38.1 |
178 |
141.3 |
102 |
185.7 |
7 |
235 |
1.6 |
6 |
150 |
320 |
41.3 |
206 |
168.3 |
103 |
215.9 |
7 |
269.9 |
1.6 |
8 |
200 |
380 |
47.7 |
260 |
219.1 |
117 |
269.9 |
7 |
330 |
1.6 |
10 |
250 |
445 |
54 |
321 |
273 |
124 |
323.8 |
7 |
387.4 |
1.6 |
12 |
300 |
520 |
57.2 |
375 |
323.8 |
137 |
381 |
7 |
450.8 |
1.6 |
14 |
350 |
585 |
60.4 |
425 |
355.6 |
149 |
412.8 |
7 |
514.4 |
1.6 |
16 |
400 |
650 |
63.5 |
483 |
406.4 |
152 |
469.9 |
7 |
571.5 |
1.6 |
18 |
450 |
710 |
66.7 |
533 |
457 |
165 |
533.4 |
7 |
628.6 |
1.6 |
20 |
500 |
775 |
69.9 |
587 |
508 |
168 |
584.2 |
7 |
685.8 |
1.6 |
24 |
600 |
915 |
76.2 |
702 |
610 |
175 |
692.2 |
7 |
812.8 |
1.6 |
Note: Welding Neck bore is derived from the pipe schedule
WELD NECK FLANGE DIMENSIONS CLASS 600
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 |
95 |
14.3 |
38 |
21.3 |
52 |
Refer Note |
34.9 |
7 |
66.7 |
1.6 |
3/4 |
20 |
115 |
15.9 |
48 |
26.7 |
57 |
42.9 |
7 |
82.6 |
1.6 |
1 |
25 |
125 |
17.5 |
54 |
33.4 |
62 |
50.8 |
7 |
88.9 |
1.6 |
1 1/4 |
32 |
135 |
20.7 |
64 |
42.2 |
67 |
63.5 |
7 |
98.4 |
1.6 |
1 1/2 |
40 |
155 |
22.3 |
70 |
48.3 |
70 |
73 |
7 |
114.3 |
1.6 |
2 |
50 |
165 |
25.4 |
84 |
60.3 |
73 |
92.1 |
7 |
127 |
1.6 |
2 1/2 |
65 |
190 |
28.6 |
100 |
73 |
79 |
104.8 |
7 |
149.2 |
1.6 |
3 |
80 |
210 |
31.8 |
117 |
88.9 |
83 |
127 |
7 |
168.3 |
1.6 |
3 1/2 |
90 |
230 |
35 |
133 |
101.6 |
86 |
139.7 |
7 |
184.2 |
1.6 |
4 |
100 |
275 |
38.1 |
152 |
114.3 |
102 |
157.2 |
7 |
215.9 |
1.6 |
5 |
125 |
330 |
44.5 |
189 |
141.3 |
114 |
185.7 |
7 |
266.7 |
1.6 |
6 |
150 |
355 |
47.7 |
222 |
168.3 |
117 |
215.9 |
7 |
292.1 |
1.6 |
8 |
200 |
420 |
55.6 |
273 |
219.1 |
133 |
269.9 |
7 |
349.2 |
1.6 |
10 |
250 |
510 |
63.5 |
343 |
273 |
152 |
323.8 |
7 |
431.8 |
1.6 |
12 |
300 |
560 |
66.7 |
400 |
323.8 |
156 |
381 |
7 |
489 |
1.6 |
14 |
350 |
605 |
69.9 |
432 |
355.6 |
165 |
412.8 |
7 |
527 |
1.6 |
16 |
400 |
685 |
76.2 |
495 |
406.4 |
178 |
469.9 |
7 |
603.2 |
1.6 |
18 |
450 |
745 |
82.6 |
546 |
457 |
184 |
533.4 |
7 |
654 |
1.6 |
20 |
500 |
815 |
88.9 |
610 |
508 |
190 |
584.2 |
7 |
723.9 |
1.6 |
24 |
600 |
940 |
101.6 |
718 |
610 |
203 |
692.2 |
7 |
838.2 |
1.6 |
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, 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 |
– |
– |
– |
– |
– |
ANSI B16.5 Weld Neck Flange Tolerances

Dimension |
Flange |
Tolerance |
A |
Outside Diameter |
- When O.D. is 24″ or less: ±1/16″ (1.6mm)
- When O.D. is over 24″: ±1/8″ (3.2mm)
|
D |
Inside Diameter |
- 10″ and smaller: ±1/32″ (0.8mm)
- 12″ thru 18″: +1/8″ (3.2mm)
- 20″ and larger: -1/16″ (1.6mm)
|
B |
Diameter of contact face |
- 1/16″ raised face: ±1/32″ (0.8mm)
- 1/4″ Raised Face, Tongue & Groove (male & female): ±1/64″ (0.4mm)
|
J |
Diameter of hub at base |
- When hub base is 24″ or smaller: ±1/16″ (1.6mm)
- When hub base is over 24″: ±1/8″ (3.2mm)
|
H |
Diameter of hub at point of welding |
- 5″ and smaller: +3/32″ (2.4mm), -1/32″ (0.8mm)
- 6″ and larger: +5/32″ (4.0mm), -1/32 (0.8mm)
|
P |
Drilling |
- Bolt circle: ±1/16″ (1.6mm)
- Bolt hole spacing: ±1/32″ (0.8mm)
|
|
Eccentricity of bolt circle with respect to facing |
- 2 1/2″ and smaller ±1/32″ (0.8mm) max.
- 3″ and larger ±1/16″ (1.6mm) max.
|
C |
Thickness |
- 18″ and smaller: ±1/8″ (3.2mm), -0″
- 20″ and larger: ±3/16″ (4.8mm), -0″
|
K |
Length of hub |
- 10″ and smaller: ±1/16″ (1.6mm)
- 12″ and larger: ±1/8″ (3.2mm)
|
Weld Neck Flange Uses
Our offered ANSI B16.5 Weld neck flanges are used in various industrial applications where the conditions are critical and severe. Some of these conditions include high temperature, high pressure, wide fluctuations in temperature and pressure, fluids that are hazardous and volatile, and temperatures in the sub-zero range.
ASME B16.5 Weld Neck Flange Price List
Long Weld Neck Flange Price: $15.45 / each
ANSI B16.5 WNRF Flange Price: $20.14 / each
Reducing Weld Neck Flange Price: $18.35 / each
ASME/ANSI B16.5 Weld Neck Flange Supplying to Following Regions & Countries:
AFRICA
Nigeria
Algeria
Angola
Tanzania
Libya
Egypt
Sudan
Equatorial Guinea
The Republic Of Congo
Gabon
NORTH AMERICA
Usa
Canada
Mexico
Costa Rica
Trinidad And Tobago
Jamaica
Denmark |
MIDDLE EAST ASIA
Saudi Arabia
Iran
Iraq
Uae
Qatar
Bahrain
Oman
Kuwait
Turkey
Jordan
SOUTH AMERICA
Argentina
Bolivia
Brazil
Chile
Venezuela
Colombia
Ecuador
Guyana
Paraguay
Uruguay |
EUROPE
Norway
Germany
France
Italy
Uk
Spain
Netherland
Belgium
Greece
Czech Republic
Portugal
Hungary
SOUTH AFRICA |
ASIA
India
Singapore
Malaysia
Indonesia
Thailand
Vietnam
South Korea
Japan
Sri Lanka
Maldives
Bangladesh
Mayanmar
Taiwan
Cambodia |