Material: The valve assembly consists of the valve and valve seat. Valve and valve seat are made of one-piece premium forged alloy steel, and follow the manufacturing process specification directly....
Sanyuan Yinda Petroleum Machinery Co., Ltd., since 1993, is a professional manufacturer of mud pump parts, integrating research, manufacturing and trade together. The main products of our company are....
Ordinary value piston is made of nitrile butadiene rubber, also can use polyurethane rubber, in order to improve the rubber working temperature range. Our company can produce rubber piston with....