forged 1. Precision die forged 2. Alloy steel and carbon steel 3. Normalized and ... couplings, and cups;3. Drilling components;4. Forged cylinders and mandrels; and spindles;5. Forged valve bodies and components; and6. Pistons, pins ... Forging, Ring Forging, Gear Blank, Gear Wheel Materialsstructural steel, tool steel, stainless steel, heat-resistant steel, super alloys, titanium, aluminum, magnesium ...