... The products are used for control rod ,shock absorber, transmission shaft, steering axle, front and rear axle, stabilizer rod, muffler ... can be ordered according to customers design requirements, Main steel gardes:10-45,16Mn,20Cr,15CrMo,35GrMo,27CD4,CK35,SAE1035 ... DIN2391 ST30Al, ST35, ST37, ST45, ST55 from Xingcheng steel or Bao steel which is better in mechanical properties regarding elongation rate ...