... companies High quality precision machining metal partUsed for air compressorMaterial: forged steelWe offer OEM service for precision machining. We choose part ... for details: www.hengyuanmachinery.com. Machining service: TurningMillingDrillingGrindingPlanningWire-cuttingWeldingMaterial available: Steel, Stainless steelBrass, Copper, BronzeAluminum, Aluminum AlloyOther material according to customer ...