... --Carbon steel --ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#,20#,A3, Q235A, 20G,16Mn, DIN St37, St45.8, St52.4,St ... .35.8,St.35.8 ASTM A333 GR.6 ; ... API 5L GRB, X60, X65, X42,X52, ectStainless Steel --ASTM ... ,316,316L,321. 1Cr18Ni9Ti, 00Cr19Ni10,00Cr17Ni14Mo2, etcAlloy Steel --ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91,16MnR, Cr5Mo ...