... 1.We are mainly engaged in the business of stainless steel special materials: 316L, 2520, 904L and C276; Special stainless ... steel bolts and nuts: 904L,C276, AL6XN, 310S, 31254, 2205, 2507 ... Monel 400; imported special steel plates: 904L, C276, 310S and AL6XN and other high nickel, high molybdenum, high copper, cobalt, and tungsten ...