1.Alloy steel,carbon steel,stainless steel,etc 2.Good quality and competitive price 3.Timely delivery 4.Factory based 1. ... Material: Alloy Steel & High Manganese Steel2. Machine Type: Drilling tool3. Standard: API & ISO4. Hole ... turbine impeller, wind power spindle, heavy load gear, ship shaft, roller, tube-shaped forging, ring forging, and all kinds of abnormal ...