... 2.Material:P5, P11, P91, P22, T91, ASTM A335 P91 Seamless alloy steel pipe1. Alloy steel pipe ... OD10-1170mmWT2-135mmStandardGB/T5310-2008, ASTM A335, ASTM A387GradeCr-Mo alloy/ Mn-V alloySection shapeRoundApplicationmachinery, structure ... 40CrMnMo, Cr9Mo, Cr2Mo, 20CrMn, 40CrMn, 38CrMoAL40Cr, 27SiMn, 30Mn, Q345B, Q345C, 16Mn, 16Cr, 20Cr and so onSurfaceBare, varnish, color ...