Product classification

Well Drilling Series

Kelly cock is also named Kelly bar cock or drill pipe safety valve, where drilling fluid can freely pass through without pressure drop.

The arrow type check valve is installed between the drill pipe and the drill bit for preventing the backflow of the drilling fluid from the shaft bottom.

Drop-in type check valve is one of blowout preventers in drill string. When the sign of blowout emerges

Our drilling tool stabilizer can be classified by main structure into

Drill Collar Lifting Nippleis of integrated structure by heat treatment and finish machining for high-quality alloy steel.

Sleeve-type expansion device is destroyed keyway keyway, keyway to prevent sticking of the main tools. Keyway sleeve-type expansion is controlled by a two-part mandrel and sleeve

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online customer service hotline:


Contact: Mr. Wang
Fax: 086-514-86762222
Address: No.5 Dingsheng Road, Shaobo Industrial Park, Jiangdu District, Yangzhou City

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