Page 31 - Pipeline Rules of Thumb Handbook

18 Pipeline Rules of Thumb Handbook

Bolting dimensions for raised face weld neck flanges

150# ANSI 300# ANSI 400# ANSI
Nom.
Pipe Stud Stud Stud
Size Quan Dia. Length Quan Dia. Length Quan Dia. Length

2 4 5/8 3 1/4 8 5/8 3 1/2 Note 1 Notes:
4 4 5/8 3 3/4 8 3/4 4 1/4 8 7/8 5 1/2
6 8 3/4 4 8 3/4 4 1/2 12 7/8 6 1. For 3 1/2≤ and smaller,
8 8 3/4 4 1/4 12 3/4 5 12 1 6 3/4 use ANSI 600 Dim.
10 12 7/8 4 3/4 12 7/8 5 1/2 16 1 1/8 7 1/2
12 12 7/8 4 3/4 16 1 6 1/4 16 1 1/4 8 2. For 2 1/2≤ and smaller,
14 12 1 5 1/4 16 1 1/8 6 3/4 20 1 1/4 8 1/4 use ANSI 1500 Dim.
16 16 1 5 1/2 20 1 1/8 7 20 1 3/8 8 3/4
18 16 1 1/8 6 20 1 1/4 7 1/2 24 1 3/8 9
20 20 1 1/8 6 1/4 24 1 1/4 7 3/4 24 1 1/2 9 3/4
24 20 1 1/4 7 24 1 1/4 8 1/4 24 1 3/4 10 3/4
26 24 1 1/4 8 1/2 24 1 1/2 9 1/4 28 1 3/4 11 3/4
28 28 1 1/4 8 3/4 28 1 5/8 10 1/4 28 1 3/4 11 3/4
30 28 1 1/4 9 28 1 5/8 10 3/4 28 1 7/8 12 1/2
32 28 1 1/2 10 28 1 3/4 11 1/2 28 2 13 1/4
34 32 1 1/2 10 1/4 28 1 7/8 12 1/4 28 2 14
36 32 1 1/2 10 3/4 32 2 13 32 2 14 1/4

600# ANSI 900# ANSI 1500# ANSI
Nom.
Pipe Stud Stud Stud
Size Quan Dia. Length Quan Dia. Length Quan Dia. Length

2 8 5/8 4 1/4 Note 2 8 7/8 6 1/4
3 8 3/4 5 8 7/8 5 3/4 8 1 1/8 7
4 8 7/8 5 3/4 8 1 1/8 6 3/4 8 3 3/4 7 3/4
6 12 1 6 3/4 12 1 1/8 7 3/4 12 1 3/8 10 1/4
8 12 1 1/8 7 3/4 12 1 3/8 8 3/4 12 1 5/8 11 1/2
10 16 1 1/4 8 1/2 16 1 3/8 8 3/4 12 1 7/8 13 1/2
12 20 1 1/4 8 3/4 20 1 3/8 10 16 2 15
14 20 1 3/8 9 1/4 20 1 1/2 10 3/4 16 2 1/4 16 1/4
16 20 1 1/2 10 20 1 5/8 11 1/4 16 2 1/2 17 3/4
18 20 1 5/8 10 3/4 20 1 7/8 12 3/4 16 2 3/4 19 1/2
20 24 1 5/8 11 1/2 20 2 13 1/2 16 3 21 1/4
24 24 1 7/8 13 20 2 1/2 17 1/4 16 3 1/2 24 1/4
26 28 1 7/8 13 1/2 20 2 3/4 17 3/4
28 28 2 14 20 3 18 1/2
30 28 2 14 1/4 20 3 19
32 28 2 1/4 15 20 3 1/4 20 1/4
34 28 2 1/4 15 1/4 20 3 1/2 21 1/4
36 28 2 1/2 16 20 3 1/2 12 3/4