Large Modulus Spur Ring Gear: 1.Material:Carbon/Alloy steel 1) Customer's drawing 2) High Quality Large Modulus Spur Gear for Heavy-Duty ... , Stabilizer, Flange, Coupling, BOP Body, Tube Plate, Roller Forging, Ring Forging, Gear Blank, Gear Wheel. 2. Materials: Carbon steel, Alloy steel 3. Supplying ...