The quality of products has met SAE & ISO international standards and the company has passed international standard ISO9001. Meanwhile, the company has gained famous trademark of Shandong province.

Types : S780/SS2.5  S660/SS2.0  S550/SS1.7  S460/SS1.4  S390/SS1.2  S330/SS1.0

          S280/SS0.8  S230/SS0.6  S170/SS0.5  S110/SS0.3

The Major Technological Index:

Chemical Composition:

C  0.70~1.20%  Mn 0.35~1.20%  Si≥ 0.40%  S≤ 0.05% P ≤ 0.05%

Microhardness:

Normal: 40~50HRC

Special: 52~56HRC

Special: 56~60HRC

Hardness Deviation: Max Deviation ± 3.0HRC

Durability: 2000~2800 times

Microstructure: Tempered Martensite or Sorbite

Density: 7.4g/cm3