Description
Size:OD: DN15- DN2000 (1/2''- 80'')
Type:welding neck, slip on, blind, socket welding, threaded, lap-joint
Pressure:150#, 300#, 600#,900#,1500#, 2500#
Material:carbon steel A105, C22.8, S235, S235JR, P235GH,SS400,37.2
Stainless Steel 304/L,316/L,321,310S,347H,1.4301, 1.4404
ASTM A234 WP1/5/9/11/12/22/91
Duplex stainless steel:UNS31803, SAF2205, UNS32205, UNS31500
Coating:Rust-proof oil, cold and hot galvanize
Packing:sea worthy plywooden case, wooden pallet
If you have any Inquiry, please don't hesitate to contact us immediately,Email:sales@union-steels.com
Pipe Flanges, Flanges Fittings
Slip-on pipe flanges
Slip-on pipe flanges actually slip over the pipe. These pipe flanges are typically machined with an inside diameter of the pipe flange slightly larger than the outside diameter of the pipe. This allows the flange to slideover the pipe but to still have a somewhat snug fit. Slip-on pipe flanges are secured to the pipe with a fillet weld at the top and the bottom of the slip-on pipe flanges. These pipe flanges are also further catagorized as a ring or a hub.
Weld neck pipe flanges
Weld neck pipe flanges attach to the pipe by welding the pipe to the neck of the pipe flange. The allows for the transfer of stress from the weld neck pipe flanges 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 often used for high pressure applications. The inside diameter of a weld neck pipe flange is machined to match the inside diameter of the pipe.
Blind pipe flanges
Blind pipe flanges are pipe flanges used to seal the end of a piping system or pressure vessel openings to prevent flow. Blind pipe flanges are commonly used for pressure testing the flow of liquid or gas through a pipe or vessel. Blind pipe flanges also allow easy access to the pipe in the event that work must be done inside the line. Blind pipe flanges are often used for high pressure applications. Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 96".
Threaded pipe flanges
Threaded pipe flanges are similar to slip-on pipe flanges except the bore of threaded pipe flange has tapered threads. Threaded pipe flanges are used with pipes that have external threads. The benefit of these pipe flanges is that it can be attached without welding. Threaded pipe flanges are often used for small diameter, high pressure requirements. Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 24".
Socket-weld pipe flanges
Socket-weld pipe flanges are typically used on smaller sizes of high pressure pipes. These pipe flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top. This allows for a smooth bore and better flow of the fluid or gas inside of the pipe. Slip on Pipe flanges with a hub have published specifications that range from 1/2" thru 24".
Specification
|
CLASS 150 According to ASTM A/SA-105; ANSI B16.5
|
|
Nominal
Pipe
Size
|
Outside
Diam. of
Flange (O)
|
Thick.
of
Flange (C)
|
Diam.
of
Raised Face (R)
|
Diam.
of Hub
at Base (X)
|
Length
thru Hub
(Y)
|
Min.
Thread
Length
(T)
|
Min.
Counter
Bore (Q)
|
No. of
Holes
|
Diam. of
Holes
|
Diam. of
Bolts
|
Diam.
of Bolt
Circle
|
Approx.
Weight
(in Pounds)
|
|
½
|
3.5
|
0.44
|
1.38
|
1.19
|
0.62
|
0.62
|
—
|
4
|
0.62
|
0.5
|
2.38
|
1
|
|
¾
|
3.88
|
0.5
|
1.69
|
1.5
|
0.62
|
0.62
|
—
|
4
|
0.62
|
0.5
|
2.75
|
2
|
|
1
|
4.25
|
0.56
|
2
|
1.94
|
0.69
|
0.69
|
—
|
4
|
0.62
|
0.5
|
3.12
|
2
|
|
1 ¼
|
4.62
|
0.62
|
2.5
|
2.31
|
0.81
|
0.81
|
—
|
4
|
0.62
|
0.5
|
3.5
|
3
|
|
1 ½
|
5
|
0.69
|
2.88
|
2.56
|
0.88
|
0.88
|
—
|
4
|
0.62
|
0.5
|
3.88
|
3
|
|
2
|
6
|
0.75
|
3.62
|
3.06
|
1
|
1
|
—
|
4
|
0.75
|
0.62
|
4.75
|
5
|
|
2 ½
|
7
|
0.88
|
4.12
|
3.56
|
1.12
|
1.12
|
—
|
4
|
0.75
|
0.62
|
5.5
|
7
|
|
3
|
7.5
|
0.94
|
5
|
4.25
|
1.19
|
1.19
|
—
|
4
|
0.75
|
0.62
|
6
|
8
|
|
3 ½
|
8.5
|
0.94
|
5.5
|
4.81
|
1.25
|
1.25
|
—
|
8
|
0.75
|
0.62
|
7
|
11
|
|
4
|
9
|
0.94
|
6.19
|
5.31
|
1.31
|
1.31
|
—
|
8
|
0.75
|
0.62
|
7.5
|
13
|
|
5
|
10
|
0.94
|
7.31
|
6.44
|
1.44
|
1.44
|
—
|
8
|
0.88
|
0.75
|
8.5
|
15
|
|
6
|
11
|
1
|
8.5
|
7.56
|
1.56
|
1.56
|
—
|
8
|
0.88
|
0.75
|
9.5
|
19
|
|
8
|
13.5
|
1.12
|
10.62
|
9.69
|
1.75
|
1.75
|
—
|
8
|
0.88
|
0.75
|
11.75
|
30
|
|
10
|
16
|
1.19
|
12.75
|
12
|
1.94
|
1.94
|
—
|
12
|
1
|
0.88
|
14.25
|
43
|
|
12
|
19
|
1.25
|
15
|
14.38
|
2.19
|
2.19
|
—
|
12
|
1
|
0.88
|
17
|
64
|
|
14
|
21
|
1.38
|
16.25
|
15.75
|
2.25
|
2.25
|
—
|
12
|
1.12
|
1
|
18.75
|
90
|
|
16
|
23.5
|
1.44
|
18.5
|
18
|
2.5
|
2.5
|
—
|
16
|
1.12
|
1
|
21.25
|
98
|
|
18
|
25
|
1.56
|
21
|
19.88
|
2.69
|
2.69
|
—
|
16
|
1.25
|
1.13
|
22.75
|
130
|
|
20
|
27.5
|
1.69
|
23
|
22
|
2.88
|
2.88
|
—
|
20
|
1.25
|
1.12
|
25
|
165
|
|
24
|
32
|
1.88
|
27.25
|
26.12
|
3.25
|
3.25
|
—
|
20
|
1.38
|
1.25
|
29.5
|
220
|
|
CLASS 300 According to ASTM A/SA-105; ANSI B16.5
|
|
Nominal
Pipe
Size
|
Outside
Diam. of
Flange (O)
|
Thick.
of
Flange (C)
|
Diam.
of
Raised Face
(R)
|
Diam.
of Hub
at Base
(X)
|
Length
thru Hub
(Y)
|
Min.
Thread
Length
(T)
|
Min.
Counter Bore
(Q)
|
No. of
Holes
|
Diam. of
Holes
|
Diam.
of Bolts
|
Diam.
of Bolt
Circle
|
Approx.
Weight
(in Pounds)
|
|
1/2
|
3.75
|
0.56
|
1.38
|
1.5
|
0.88
|
0.62
|
0.93
|
4
|
0.62
|
0.5
|
2.62
|
2
|
|
3/4
|
4.62
|
0.62
|
1.69
|
1.88
|
1
|
0.62
|
1.14
|
4
|
0.75
|
0.62
|
3.25
|
3
|
|
1
|
4.88
|
0.69
|
2
|
2.12
|
1.06
|
0.69
|
1.41
|
4
|
0.75
|
0.62
|
3.5
|
3
|
|
1 1/4
|
5.25
|
0.75
|
2.5
|
2.5
|
1.06
|
0.81
|
1.75
|
4
|
0.75
|
0.62
|
3.88
|
4
|
|
1 1/2
|
6.12
|
0.81
|
2.88
|
2.75
|
1.19
|
0.88
|
1.99
|
4
|
0.88
|
0.75
|
4.5
|
6
|
|
2
|
6.5
|
0.88
|
3.62
|
3.31
|
1.31
|
1.12
|
2.5
|
8
|
0.75
|
0.62
|
5
|
7
|
|
2 1/2
|
7.5
|
1
|
4.12
|
3.94
|
1.5
|
1.25
|
3
|
8
|
0.88
|
0.75
|
5.88
|
10
|
|
3
|
8.25
|
1.12
|
5
|
4.62
|
1.69
|
1.25
|
3.63
|
8
|
0.88
|
0.75
|
6.62
|
13
|
|
3 1/2
|
9
|
1.19
|
5.5
|
5.25
|
1.75
|
1.44
|
4.13
|
8
|
0.88
|
0.75
|
7.25
|
17
|
|
4
|
10
|
1.25
|
6.19
|
5.75
|
1.88
|
1.44
|
4.63
|
8
|
0.88
|
0.75
|
7.88
|
22
|
|
5
|
11
|
1.38
|
7.31
|
7
|
2
|
1.69
|
5.69
|
8
|
0.88
|
0.75
|
9.25
|
28
|
|
6
|
12.5
|
1.44
|
8.5
|
8.12
|
2.06
|
1.81
|
6.75
|
12
|
0.88
|
0.75
|
10.62
|
39
|
|
8
|
15
|
1.62
|
10.62
|
10.25
|
2.44
|
2
|
8.75
|
12
|
1
|
0.88
|
13
|
58
|
|
10
|
17.5
|
1.88
|
12.75
|
12.62
|
2.62
|
2.19
|
10.88
|
16
|
1.12
|
1
|
15.25
|
81
|
|
12
|
20.5
|
2
|
15
|
14.75
|
2.88
|
2.38
|
12.94
|
16
|
1.25
|
1.12
|
17.75
|
115
|
|
14
|
23
|
2.12
|
16.25
|
16.75
|
3
|
2.5
|
14.19
|
20
|
1.25
|
1.12
|
20.25
|
165
|
|
16
|
25.5
|
2.25
|
18.5
|
19
|
3.25
|
2.69
|
16.19
|
20
|
1.38
|
1.25
|
22.5
|
190
|
|
18
|
28
|
2.38
|
21
|
21
|
3.5
|
2.75
|
18.19
|
24
|
1.38
|
1.25
|
24.75
|
250
|
|
20
|
30.5
|
2.5
|
23
|
23.12
|
3.75
|
2.88
|
20.19
|
24
|
1.38
|
1.25
|
27
|
315
|
|
24
|
36
|
2.75
|
27.25
|
27.62
|
4.19
|
3.25
|
24.19
|
24
|
1.62
|
1.5
|
32
|
475
|
|
CLASS 600 According to ASTM A/SA-105; ANSI B16.5
|
|
Nominal
Pipe
Size
|
Outside
Diam. of
Flange (O)
|
Thick.
of
Flange
(C)
|
Diam.
of
Raised Face
(R)
|
Diam.
of Hub
at Base (X)
|
Length
thru Hub
(Y)
|
Min.
Thread
Length
(T)
|
Min.
Counter
Bore
(Q)
|
No. of
Holes
|
Diam. of
Holes
|
Diam. of
Bolts
|
Diam. of
Bolt Circle
|
Approx.
Weight
(in Pounds)
|
|
1/2
|
3.75
|
0.56
|
1.38
|
1.5
|
0.88
|
0.62
|
0.93
|
4
|
0.62
|
0.5
|
2.62
|
2
|
|
3/4
|
4.62
|
0.62
|
1.69
|
1.88
|
1
|
0.62
|
1.14
|
4
|
0.75
|
0.62
|
3.25
|
3
|
|
1
|
4.88
|
0.69
|
2
|
2.12
|
1.06
|
0.69
|
1.41
|
4
|
0.75
|
0.62
|
3.5
|
4
|
|
1 1/4
|
5.25
|
0.81
|
2.5
|
2.5
|
1.12
|
0.81
|
1.75
|
4
|
0.75
|
0.62
|
3.88
|
5
|
|
1 1/2
|
6.12
|
0.88
|
2.88
|
2.75
|
1.25
|
0.88
|
1.99
|
4
|
0.88
|
0.75
|
4.5
|
7
|
|
2
|
6.5
|
1
|
3.62
|
3.31
|
1.44
|
1.12
|
2.5
|
8
|
0.75
|
0.62
|
5
|
9
|
|
2 1/2
|
7.5
|
1.12
|
4.12
|
3.94
|
1.62
|
1.25
|
3
|
8
|
0.88
|
0.75
|
5.88
|
13
|
|
3
|
8.25
|
1.25
|
5
|
4.62
|
1.81
|
1.38
|
3.63
|
8
|
0.88
|
0.75
|
6.62
|
16
|
|
3 1/2
|
9
|
1.38
|
5.5
|
5.25
|
1.94
|
1.56
|
4.13
|
8
|
1
|
0.88
|
7.25
|
21
|
|
4
|
10.75
|
1.5
|
6.19
|
6
|
2.12
|
1.62
|
4.63
|
8
|
1
|
0.88
|
8.5
|
37
|
|
5
|
13
|
1.75
|
7.31
|
7.44
|
2.38
|
1.88
|
5.69
|
8
|
1.12
|
1
|
10.5
|
63
|
|
6
|
14
|
1.88
|
8.5
|
8.75
|
2.62
|
2
|
6.75
|
12
|
1.12
|
1
|
11.5
|
80
|
|
8
|
16.5
|
2.19
|
10.62
|
10.75
|
3
|
2.25
|
8.75
|
12
|
1.25
|
1.12
|
13.75
|
115
|
|
10
|
20
|
2.5
|
12.75
|
13.5
|
3.38
|
2.56
|
10.88
|
16
|
1.38
|
1.25
|
17
|
170
|
|
12
|
22
|
2.62
|
15
|
15.75
|
3.62
|
2.75
|
12.94
|
20
|
1.38
|
1.25
|
19.25
|
200
|
|
14
|
23.75
|
2.75
|
16.25
|
17
|
3.69
|
2.88
|
14.19
|
20
|
1.5
|
1.38
|
20.75
|
230
|
|
16
|
27
|
3
|
18.5
|
19.5
|
4.19
|
3.06
|
16.19
|
20
|
1.62
|
1.5
|
23.75
|
330
|
|
18
|
29.25
|
3.25
|
21
|
21.5
|
4.62
|
3.12
|
18.19
|
20
|
1.75
|
1.63
|
25.75
|
400
|
|
20
|
32
|
3.5
|
23
|
24
|
5
|
3.25
|
20.19
|
24
|
1.75
|
1.62
|
28.5
|
510
|
|
24
|
37
|
4
|
27.25
|
28.25
|
5.5
|
3.62
|
24.19
|
24
|
2
|
1.88
|
33
|
730
|
|
CLASS 900According to ASTM A/SA-105; ANSI B16.5
|
|
Nominal
Pipe
Size
|
Outside
Diam. of
Flange (O)
|
Thick.
of
Flange
(C)
|
Diam.
of
Raised Face
(R)
|
Diam.
of Hub
at Base
(X)
|
Length
thru Hub (Y)
|
Min.
Thread
Length
(T)
|
Min.
Counter
Bore
(Q)
|
No. of
Holes
|
Diam. of
Holes
|
Diam. of
Bolts
|
Diam. of
Bolt Circle
|
Approx.
Weight
(in Pounds)
|
|
1/2
|
4.75
|
0.88
|
1.38
|
1.5
|
1.25
|
0.88
|
0.93
|
4
|
0.88
|
0.75
|
3.25
|
4
|
|
3/4
|
5.12
|
1
|
1.69
|
1.75
|
1.38
|
1
|
1.14
|
4
|
0.88
|
0.75
|
3.5
|
5
|
|
1
|
5.88
|
1.12
|
2
|
2.06
|
1.62
|
1.12
|
1.41
|
4
|
1
|
0.88
|
4
|
8
|
|
1 1/4
|
6.25
|
1.12
|
2.5
|
2.5
|
1.62
|
1.19
|
1.75
|
4
|
1
|
0.88
|
4.38
|
9
|
|
1 1/2
|
7
|
1.25
|
2.88
|
2.75
|
1.75
|
1.25
|
1.99
|
4
|
1.12
|
1
|
4.88
|
12
|
|
2
|
8.5
|
1.5
|
3.62
|
4.12
|
2.25
|
1.5
|
2.5
|
8
|
1
|
0.88
|
6.5
|
25
|
|
2 1/2
|
9.62
|
1.62
|
4.12
|
4.88
|
2.5
|
1.88
|
3
|
8
|
1.12
|
1
|
7.5
|
36
|
|
3
|
9.5
|
1.5
|
5
|
5
|
2.12
|
1.62
|
3.63
|
8
|
1
|
0.88
|
7.5
|
26
|
|
4
|
11.5
|
1.75
|
6.19
|
6.25
|
2.75
|
1.88
|
4.63
|
8
|
1.25
|
1.12
|
9.25
|
53
|
|
5
|
13.75
|
2
|
7.31
|
7.5
|
3.12
|
2.12
|
5.69
|
8
|
1.38
|
1.25
|
11
|
83
|
|
6
|
15
|
2.19
|
8.5
|
9.25
|
3.38
|
2.25
|
6.75
|
12
|
1.25
|
1.12
|
12.5
|
110
|
|
8
|
18.5
|
2.5
|
10.62
|
11.75
|
4.00
|
2.50
|
8.75
|
12
|
1.5
|
1.38
|
15.5
|
170
|
|
10
|
21.5
|
2.75
|
12.75
|
14.5
|
4.25
|
2.81
|
10.88
|
16
|
1.5
|
1.38
|
18.5
|
245
|
|
12
|
24
|
3.12
|
15
|
16.5
|
4.62
|
3
|
12.94
|
20
|
1.5
|
1.38
|
21
|
325
|
|
14
|
25.25
|
3.38
|
16.25
|
17.75
|
5.12
|
3.25
|
14.19
|
20
|
1.62
|
1.5
|
22
|
400
|
|
16
|
27.75
|
3.5
|
18.5
|
20
|
5.25
|
3.38
|
16.19
|
20
|
1.75
|
1.63
|
24.25
|
425
|
|
18
|
31
|
4
|
21
|
22.25
|
6
|
3.5
|
18.19
|
20
|
2
|
1.88
|
27
|
600
|
|
20
|
33.75
|
4.25
|
23
|
24.5
|
6.25
|
3.62
|
20.19
|
20
|
2.12
|
2
|
29.5
|
730
|
|
24
|
41
|
5.5
|
27.25
|
29.5
|
8
|
4
|
24.19
|
20
|
2.62
|
2.5
|
35.5
|
1400
|
|
CLASS 1500 According to ASTM A/SA-105; ANSI B16.5
|
|
Nominal
Pipe
Size
|
Outside
Diam. of
Flange (O)
|
Thick.
of
Flange
(C)
|
Diam.
of
Raised Face
(R)
|
Diam.
of Hub
at Base
(X)
|
Length
thru Hub
(Y)
|
Min.
Thread
Length
(T)
|
Min.
Counter
Bore
(Q)
|
No. of
Holes
|
Diam. of
Holes
|
Diam. of
Bolts
|
Diam. of
Bolt Circle
|
Approx.
Weight
(in Pounds)
|
|
1/2
|
4.75
|
0.88
|
1.38
|
1.5
|
1.25
|
0.88
|
0.93
|
4
|
0.88
|
0.75
|
3.25
|
4
|
|
3/4
|
5.12
|
1
|
1.69
|
1.75
|
1.38
|
1
|
1.14
|
4
|
0.88
|
0.75
|
3.5
|
5
|
|
1
|
5.88
|
1.12
|
2
|
2.06
|
1.62
|
1.12
|
1.41
|
4
|
1
|
0.88
|
4
|
8
|
|
1 1/4
|
6.25
|
1.12
|
2.5
|
2.5
|
1.62
|
1.19
|
1.75
|
4
|
1
|
0.88
|
4.38
|
9
|
|
1 1/2
|
7
|
1.25
|
2.88
|
2.75
|
1.75
|
1.25
|
1.99
|
4
|
1.12
|
1
|
4.88
|
12
|
|
2
|
8.5
|
1.5
|
3.62
|
4.12
|
2.25
|
1.5
|
2.5
|
8
|
1
|
0.88
|
6.5
|
25
|
|
2 1/2
|
9.62
|
1.62
|
4.12
|
4.88
|
2.5
|
1.88
|
3
|
8
|
1.12
|
1
|
7.5
|
36
|
Standard
|
Standard
|
Specification
|
|
ASTM A105
|
Standard Specification for Carbon Steel Forgings for Piping Applications
|
|
ASTM A350
|
Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
|
|
ASTM A182
|
Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
|
|
ASTM A404
|
Specification for Forged or Rolled Alloy Steel Pip Flanges, Forged Fittings, and Valves and Parts Specially Heat Treated for High-Temperature Service (Withdrawn 1974)
|
|
ASTM A234
|
Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
|
|
ASTM A420
|
Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
|
|
ASTM A403
|
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
|
|
ASTM A694
|
Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
|
Process
Packing
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