DC53 cold mold steel:Our advantage is the stable quality and the ... factory of special steel industry in China.Produce various of mold steel,tool steel, alloy steel,stainless steel and Round/ ... ), S136(4Cr13MoV), SUS420(4Cr13)New Mould Steel: Y4(4Cr3Mo2MnVNbB), HD(4Cr3Mo2VNiNbB), HG(4Cr3Mo3W4VNb)Size:Round bar:50mm-1000mmSquare bar:70mm ... we’ll try my best to satisfy your needs. cold mold steel DC53