The welding neck flange is normally referred to as the “high hub” flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welding flange of those currently available because of its inherent structural value.
Specification
A) Size: 1/2 "-60", DN15-DN4000 B) Materials: a) Carbon steel: ASTM A105/A105M/ASME AS105, ST37.2 b) Stainless steel: ASTM A182 F304, F304L, F316, F316L C) Standard: ANSI/ASME B 16.5 Standard,B16.47 Series A & B,AWWA C207,BS10-1962,BS4504 Sec. 3.1/1989,EN1092-1: 2002,ISO 7005-1,JIS B2220,DIN Standard
ANSI B16.5 Welding Neck 150lbs RF Dimension
Pipe
Flange
Hub
Raised
Drilling Template
Approx.
Face
Weight
Norm.
O D
A
B
C
D
E
F
G
Number
l
J
≈
Size
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Kgs
1/2 "
21,3
88,9
15,7
11,2
47,8
21,3
30,2
35,1
4
15,7
60,5
0.5
3/4"
26,7
98,6
20,8
12,7
52,3
26,7
38,1
42,9
4
15,7
69,9
0.73
1"
33,4
108,0
26,7
14,2
55,6
33,5
49,3
50,8
4
15,7
79,2
1.05
1-1/4"
42,2
117,3
35,1
15,7
57,2
42,2
58,7
63,5
4
15,7
88,9
1.37
1-1/2"
48,3
127,0
40,9
17,5
62,0
48,3
65,0
73,2
4
15,7
98,6
1.78
2"
60,3
152,4
52,6
19,1
63,5
60,5
77,7
91,9
4
19,1
120,7
2.65
2-1/2"
73,0
177,8
62,7
22,4
69,9
73,2
90,4
104,6
4
19,1
139,7
4.25
3"
88,9
190,5
78,0
28,9
69,6
88,9
108,0
127,0
4
19,1
152,4
5.1
3-1/2"
101,6
215,9
90,2
28,9
71,4
101,6
122,2
139,7
8
19,1
177,8
6.28
4"
114,3
228,6
102,4
28,9
76,2
114,3
134,9
157,2
8
19,1
190,5
7.13
5"
141,3
254,0
128,3
28,9
88,9
141,2
163,6
185,7
8
22,4
215,9
8.95
6"
168,3
279,4
154,2
25,4
88,9
168,4
192,0
215,9
8
22,4
241,3
10.97
8"
219,1
342,9
202,7
28,4
101,6
219,2
246,1
269,7
8
22,4
298,5
18.18
10"
273
406,4
254,5
30,2
101,6
273,1
304,8
323,9
12
25,4
362,0
24.92
12 "
323,8
482,6
304,8
31,8
114,3
323,8
365,3
381,0
12
25,4
431,8
38.37
14"
355,6
533,4
35,1
127,0
355,6
400,1
412,8
12
28,4
476,3
50.54
16"
406,4
596,9
36,6
127,0
406,4
457,2
469,9
16
28,4
539,8
62.89
18"
457,2
635,0
39,6
139,7
457,2
505,0
533,4
16
31,8
577,9
70.94
20"
508
698,5
42,9
144,5
508,0
558,8
584,2
20
31,8
635,0
87.83
24"
609,6
812,8
47,8
152,4
609,6
663,4
692,2
20
35,1
749,3
119.51
Product
about
Advantages
Certifications
visiting
FAQ
Q: Are you trading company or manufature? A: we are trading company, and factory Q: How long is your delivery time? A: Generally it is 10-30dasys to make fresh Q:Do you provide samples? is it free or extra? A: Yes, we could offer the sample for free charge but do not pay the cost of freight Q: What is your term of payment A: payment <=USD10000, 100% in advance. Payment > USD10000, 30% T/T in advance, balance upon receipt of B/L copy by email or fax. If you have other questions, please feel free to contact us.
