High Quality Material of steel plate: High quality carbon steel Q355B, Guaranteed Performance Material, each steel plate has the same stable performance. After hot blasting, smooth, it is stronger than common steel.
Excellent Sealing Performance The double-sealing ring and the dust-proof ring structure can guarantee a long lifetime.
Stronger Plunger The material of plunger is Chilled Alloy Cast Iron, after polishing,grinding treatment and resist compression test,make the surface smooth,and anti-abrasion.