Bolt-Up Chart for Class 300 Flange

ASME B16.47 Series A 300 Large Diameter Flange (Estimating Information Only)
Pipe Size	Qty.	Dia.	Stud Length
26	28	1 ^5/8	10 ^1/2
28	28	1 ^5/8	11
30	28	1 ^3/4	11 ^3/4
32	28	1 ^7/8	12 ^3/4
34	32	1 ^7/8	13
36	32	2	13 ^1/2
38	32	1 ^1/2	12 ^3/4
40	32	1 ^5/8	13 ^1/2
42	32	1 ^5/8	13 ^3/4
44	32	1 ^3/4	14 ^1/2
46	28	1 ^7/8	15
48	32	1 ^7/8	15 ^1/2
50	32	2	16 ^1/4
52	32	2	16 ^1/2
54	28	2 ^1/4	17 ^3/4
56	28	2 ^1/4	17 ^3/4
58	32	2 ^1/4	18 ^1/4
60	32	2 ^1/4	18 ^3/4

ASME B16.47 Large Diameter Flange, Series A 300 Bolt-Up Chart