... -treatment, galvanized 4.TS16949;ISO9001 TS16949 Carbon steel galvanized Forged Nut for ConstructionAbout Zhongsheng:Rizhao Zhongsheng Forging Company Ltd. specializes ... flange: S355, C22, 16Mn, 20Mn, 42CrMo, F3042) Forged pipe fittings: SA106 CL B, SA 106 CL C, WB36, 12Cr1MoV ... followed. Contact us or visit us for more information, if you want.MaterialsFerrous AlloysLow Carbon Steel (Grade # EN 1A, SAE ...