... Body, Tube Plate, Roller Forging, Roller Shell, Ring Forging, Gears, Gear Blank, Gear Shaft, Gear Wheel. 2. Materials: Carbon steel, Alloy steel ... (m) Length(m) Shaft ≤2.5 ≤15 Block ≤4.0 / Ring ≤4.9 ≤3.5 Cylinder ≤1.5 ≤8.0 7 ... . Working Site:12. Products13. Packing & Delivery14. Company Certificate Internal Gear Ring