Pipe Fittings

flanges,carbon steel flange,stainless steel flange,alloy steel flange,astm flange,asme flange
Flange

Flange

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
  • Flange
  • Flange
  • Flange
  • Flange
  • Description
  • Specification
  • Standard
  • Process
  • Packing

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


what is a flange?

flanges, meaning rims, are symmetrical disc-like components that are used to attach or seal pipes, containers, or fixed-shaft mechanical pieces. these disc-shaped components are most frequently found in plumbing and are typically used in pairs. there are also different types of fasteners and threaded fixings are used to secure the flanges in place.

in addition, a flange features bolt holes. two flanges are normally joined to pipe ends with a gasket in between, and the connection between them is made with bolts.




pipe flanges, flanges fittings


flange-01

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.


flange-02

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.

flange-03

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".


flange-04

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".


flange-05

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".


characteristics of flanges
flanges have accurately drilled holes for easy assembly.
they have controlled grain flow for optimal strength and stiffness.
to facilitate good welding, flanges are machined bevels.
for unrestricted flow when used for piping system, flanges are smooth and have accurate bore.
this component has spot-facing to ensure fastener seating stays true and square.






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

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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