HEBEI LONGSHENG METALS & MINERALS CO., LTD.
GI coils, rattan furniture, ANGLE STEEL, Box model steel, bundling machine, Manufacturer and Supplier - China
1.Unique heat treatment engineering and entire oil quenching technology
2.Strict quality process control system
3.High-hardness, low abrasive wear rate, good toughness, high wear-resisting property.
4.The difference of HRC between surface and core... - Update: 2010-06-13