Stainless Steel Weld Neck Flanges Flanges, Alloy Steel Weld Neck Flanges Supplier

Alloy Steel, Carbon Steel Threaded Flange - Manufacturer

ASME B16.5 weld neck flange

1-Threaded flange | 2-Thread | 3-Pipe or Fitting - Manufacturer of Threaded FlangesWeld neck pipe flanges are connected to the pipe by welding the pipe to the neck of the pipe flange, which helps to pass on the stress from the weld neck to the pipe itself. This also reduces high stress concentration at the base of the hub of the weld neck pipe flanges. Weld neck pipe flanges are generally used in high pressure applications, where hot or cold temperatures exist. The inside diameter of a weld neck pipe flange is machined to match the inside diameter of the pipe.

 

ASME B16.5 weld neck flange Specification

Size: 1/2″ (15 NB) to 48″ (1200NB)

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Carbon Steel Weld Neck Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel Weld Neck Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

Alloy Steel Weld Neck Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy Weld Neck Flanges: Duplex, Super Duplex, Nickel Alloys

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Value Added Services: CNC Machining, Customised Flanges

Dimensions of ANSI B16.5 Weld Neck Flange

 
Nominal size
Outside diam. of flange
Thick. of flange
Diam. of raised face
Diam of hub at base
Diam. of hub at point of welding
Length thru hub
No. of holes
Diam. of holes
Diam. of bolts
Diam. of bolt circle
Approx. weight pounds Kg
O
C
R
X
A
Y
in.
1/2″
3.50
0.44
1.38
1.19
0.84
1.88
4
0.62
1/2
2.38
2
mm.
88.9
11.2
35.1
30.2
21.3
47.8
15.7
12.7
60.5
1
in.
3/4″
3.88
0.50
1.69
1.50
1.05
2.06
4
0.62
1/2
2.75
2
mm.
98.6
12.7
42.9
38.1
26.7
52.3
15.7
12.7
69.9
1
in.
1″
4.25
0.56
2.00
1.94
1.32
2.19
4
0.62
1/2
3.12
3
mm.
108.0
14.2
50.8
49.3
33.5
55.6
15.7
12.7
79.2
1
in.
1 1/4″
4.62
0.62
2.50
2.31
1.66
2.25
4
0.62
1/2
3.50
3
mm.
117.3
15.7
63.5
58.7
42.2
57.2
15.7
12.7
88.9
1
in.
1 1/2″
5.00
0.69
2.88
2.56
1.90
2.44
4
0.62
1/2
3.88
4
mm.
127.0
17.5
73.2
65.0
48.3
62.0
15.7
12.7
98.6
2
in.
2″
6.00
0.75
3.62
3.06
2.38
2.50
4
0.75
5/8
4.75
6
mm.
152.4
19.1
91.9
77.7
60.5
63.5
19.1
15.9
120.7
3
in.
2 1/2″
7.00
0.88
4.12
3.56
2.88
2.75
4
0.75
5/8
5.50
8
mm.
177.8
22.4
104.6
90.4
73.2
69.9
19.1
15.9
139.7
4
in.
3″
7.50
0.94
5.00
4.25
3.50
2.75
4
0.75
5/8
6.00
10
mm.
190.5
23.9
127.0
108.0
88.9
69.9
19.1
15.9
152.4
5
in.
3 1/2″
8.50
0.94
5.50
4.81
4.00
2.81
8
0.75
5/8
7.00
12
mm.
215.9
23.9
139.7
122.2
101.6
71.4
19.1
15.9
177.8
5
in.
4″
9.00
0.94
6.19
5.31
4.50
3.00
8
0.75
5/8
7.50
15
mm.
228.6
23.9
157.2
134.9
114.3
76.2
19.1
15.9
190.5
7
in.
5″
10.00
0.94
7.31
6.44
5.56
3.50
8
0.88
3/4
8.50
19
mm.
254.0
23.9
185.7
163.6
141.2
88.9
22.4
19.1
215.9
9
in.
6″
11.00
1.00
8.50
7.56
6.63
3.50
8
0.88
3/4
9.50
24
mm.
279.4
25.4
215.9
192.0
168.4
88.9
22.4
19.1
241.3
11
in.
8″
13.50
1.12
10.62
9.69
8.63
4.00
8
0.88
3/4
11.75
39
mm.
342.9
28.4
269.7
246.1
219.2
101.6
22.4
19.1
298.5
18
in.
10″
16.00
1.19
12.75
12.00
10.75
4.00
12
1.00
7/8
14.25
52
mm.
406.4
30.2
323.9
304.8
273.1
101.6
25.4
22.2
362.0
24
in.
12″
19.00
1.25
15.00
14.38
12.75
4.50
12
1.00
7/8
17.00
80
mm.
482.6
31.8
381.0
365.3
323.9
114.3
25.4
22.2
431.8
36
in.
14″
21.00
1.38
16.25
15.75
14.00
5.00
12
1.12

1

18.75
110
mm.
533.4
35.1
412.8
400.1
355.6
127.0
28.4
25.4
476.3
50
in.
16″
23.50
1.44
18.50
18.00
16.00
5.00
16
1.12

1

21.25
140
mm.
596.9
36.6
469.9
457.2
406.4
127.0
28.4
25.4
539.8
64
in.
18″
25.00
1.56
21.00
19.88
18.00
5.50
16
1.25
1 1/8
22.75
150
mm.
635.0
39.6
533.4
505.0
457.2
139.7
31.8
28.6
577.9
68
in.
20″
27.50
1.69
23.00
22.00
20.00
5.69
20
1.25
1 1/8
25.00
180
mm.
698.5
42.9
584.2
558.8
508.0
144.5
31.8
28.6
635.0
82
in.
24″
32.00
1.88
27.25
26.12
24.00
6.00
20
1.38
1 1/4
29.50
260
mm.
812.8
47.8
692.2
663.4
609.6
152.4
35.1
31.8
749.3
118

Price List of Weld Neck Flange

Types of Weld neck flanges Price Unit
stainless steel Weld neck flanges class 150 $22.45 NOS
stainless steel Weld neck flanges class 300 $25.39 NOS
stainless steel Weld neck flanges class 600 $31.19 NOS
carbon steel Weld neck flanges class 150 $75.89 NOS
carbon steel Weld neck flanges class 300 $88.12 NOS
carbon steel Weld neck flanges class 600 $99.52 NOS
Weld neck flanges ansi b16 5 class 150 $75.56 NOS
Weld neck flanges ansi b16 5 class 300 $95.56 NOS