Flange

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

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alloy steel pip flanges, forged fittings, and valves and parts specially heat treated for high-temperature service (withdrawn 1974)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