... , including:1. Barrels, bearings, and blocks;2. Cable drums, couplings, and cups;3. Drilling components;4. Forged cylinders and mandrels; and spindles;5. Forged valve ... , heat-resistant steel, super alloys, titanium, aluminum, magnesium and copper alloys Supplying range Shafts, Sleeves, Rings, Cylinders, Blocks, Modules etc Technology & CapabilityWe ...