... 2.Standard: GB, ISO, DIN, BS, ANSI/ASME, JIS 3,Size: M6-M100(1/4-4inch), also according ... ),BA,NFE,JIS,and according to customers' requirements.3.MaterialCarbon steel,45#,65Mn,stainless steel,brass4.FinishPlain;black ... ; zinc plated(Cr,3+);zinc plated(Cr,6+); hot dipped galvanized; dacromet ... cadmium plated,etc.5.SizeM3-M80;1/4”~3-1/4”6.Supply abiltity500 tons per ...