HS7-4-2-5 / 1.3246 steel bar 1.Good quality and price for 10 year's experience 2.ISO9001, ... steel, Titanium and its alloy, Die steel, etc Plastic Mould Steel: S55C, P20(1.2311), 1.2312( ... smelting, forging, heat treatment, machining and testing. 4.We already passed ISO9001-2008, ISO14001-2004, GB/ ... team,we produce high level special steels .4)Quality Warranty:Yuanfang established top class Physical and ...