◆ Valve body and seat are forged of superd alloy steel and machined strictly in accordance with the specified process to ensure high glossiness and precise size,By use of the advanced heat treatment the products shall get high strength,high toughness and adequate hardness over HRC58.
　　◆ Sealers are made of polyurethane or special rubber,which is wear-resisting,service life is long,easy to replace.
　　◆ Various valve bodies and seats for all kinds of mud pumps shall be provided by us.