Qingdao HNA Oilfield Equipment Manufacturing Co., Ltd.
oilfield equipment, F1600 mud pump, 12P160 mud pump, drilling rig, triplex mud pump, Manufacture and Supplier - China(CN)
HNA Offers two style of Four-wing guided valves and full open seats which feature greater fluid flow through the full open seat. The full open seat provides easier valve maintenance and seat pulling, in valve-over- valve fluid ends. Inno... - Update: 2007-03-20