ASTM B622 is the Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube, it covers the grade UNS N10001, UNS N10242, UNS N10665, UNS N12160, UNS N10675, UNS N10276, UNS N06455, UNS N06007, UNS N08320, UNS N06975, UNS N06002, UNS N06985, UNS N06022, UNS N06035, UNS N08135, UNS N06255, UNS N06058, UNS N06059, UNS N06200, UNS N10362, UNS N06030, UNS N08031, UNS R30556, UNS N08535, UNS N06250, UNS N06060, UNS N06230, UNS N06686, UNS N10629, UNS N06210, UNS N10624, and UNS R20033.

ASTM B622 Nickey Alloy seamless Pipe tube Pipe Schedules

NPSnominal pipe size		OD(mm)	Pipe Schedules
DN	NPS(in)		Sch10 in(mm)	Sch40 in(mm)	Sch80 in(mm)
8	1/4	13.72	0.065(1.65)	0.088(2.24)	...
10	3/8	17.14	0.065(1.65)	0.091(2.31)	0.126(3.20)
15	1/2	21.34	0.083(2.11)	0.109(2.77)	0.147(3.73)
20	3/4	26.67	0.083(2.11)	0.113(2.87)	0.154(3.91)
25	1	33.40	0.109(2.77)	0.133(3.38)	0.179(4.55)
32	1 1/4	42.16	0.109(2.77)	0.140(3.56)	0.191(4.85)
40	1 1/2	48.26	0.109(2.77)	0.145(3.68)	0.200(5.08)
50	2	60.32	0.109(2.77)	0.154(3.91)	0.218(5.54)
65	2 1/2	73.02	0.120(3.05)	0.203(5.16)	0.276(7.01)
80	3	88.90	0.120(3.05)	0.216(5.49)	0.300(7.62)