... make forging parts and casting parts. Here are some details of the products for your reference. 1. Main products: Custom ... , Roller Forging, Ring Forging, Gear Blank, Gear Wheel. 2. Materials: Carbon steel, Alloy steel 3. Supplying range: Shafts, Sleeves, ... properties report are approved by third party, Luoyang Ship Material Research Institute, CSIC. UT test: 100% ultrasonic test according to EN10228 ...