At present, Petrogears mainly produces ceramic nozzle drill check valve (on/off blowout preventer) ,

——Into PetrogearsShanghai Petrogears Co. , Ltd. was established in March 2007 with registered capit

The float valve in oil drilling is a one-way valve, whose main function is to prevent drilling fluid

The remote-controlled variable diameter stabilizer is a specialized tool used in oil drilling operat