... , A269 and A270, A312, ISO9000Round and embossed tube O.D. (mm)9.5 , 12.7 , 15.9 , 17 , 18 , 19. 1 , 20 ... , 42 , 45, 48 , 50 , 50.8 , 56 , 57 , 60, 63.5 , 76.2 , 80 , 89 , 101.6 , 108 , 114 , 127 , 133 ... as customers' requestMaterial Grade201 (Ni 1%)202 (Ni 3.5%~4.5%)301 (Ni 6%)304 (Ni 8%,Cr 18%)316 (Ni ...