OEM Manufacturer Cemented Carbide Steel Ball - YG8 Finishged Tunsten Carbide Valve Spool For Oil Industry – Shanghai HY Industry
OEM Manufacturer Cemented Carbide Steel Ball - YG8 Finishged Tunsten Carbide Valve Spool For Oil Industry – Shanghai HY Industry,
- 1.Valve seat are malting with cemented carbide ball.
2.Beeter tightness and wear-resistant.
3.Smooth and glossy slope surface.