... , Tube Plate, Roller Forging, Roller Shell, Ring Forging, Gears, Gear Blank, Gear Shaft, Gear Wheel. 2. Materials: Carbon steel, Alloy steel 3.Supplying ... Diameter(m) Length(m) Shaft ≤2.5 ≤15 Block ≤4.0 / Ring ≤4.9 ≤3.5 Cylinder ≤1.5 ≤8 ... .0 7. Standards: GB, JIS, AISI, SAE, ASTM/ASME, EN, DIN, ...