... and grades:GB5310,GB3087,10#,20#,20G,20MnG,12Cr1MoVG,15CrMoG ASTM A335(P1/P11/P12/P2/P22/P5/P9 pressure boiler ... for boilers and heat exchangersDimensions,mechanical properties,chemical compositons:Refer to ASTM A355,EN 10216 or as per client's requirementsPacking:bundlesomerwith ...