Detail: Best Quality 4145H Drilling Stabilizer D311.2* 209.6 * 2540mm, Surface hardness 225HB Our product line adopts the domestic and abroad standard with ASTM, ASME, DIN, GB, JB, BS, EN, JIS etc....
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Detail: Carbon Steel Gear Rack Open Die Forging Heat Treatment , EN10228 / ASTM A388 Mining machinery gear guides, gear transmission, rack, gear rack with carbon steel, alloy steel or stainless....