... Forged cylinders and mandrels; and spindles;5. Forged valve bodies and components; and6. Pistons, pins, and rollers ... , Flange, Coupling, BOP Body, Tube Plate, Roller Forging, Ring Forging, Gear Blank, Gear Wheel Materialsstructural steel, tool steel, ... 4,000 Tons· Computer-Controlled Machining With Automated Hand Process Forging – Normalizing & Tempering – Proof Machining- Quenching & Tempering ...