Jiangyin MITOO precise is a company who mainly manufacture and sell the Steel forgings .Including Ring forgings , and Free forging products , such as the shafts, flanges . The material including : carbon steel , low alloy steel , and stainless steel . S355J2G3: Low alloy high strength structural steel. J2g3 means that the delivery state is normalized, the impact energy at - 20 ℃ is 27j, and G3 and G4 means the Deoxidation representation. Ring forgings is used for making slew bearing. Open die /Free forgings are widly applicated. We can also supply flat steel ,steel wire ,refrigeration pipe.