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Northern Oilfield Machinery

Professional manufacturer of petroleum drilling and extraction equipment and accessories

Patent Certificate

A type of plug valve

A type of plug valve

A bidirectional sealed plug valve for petroleum drilling

A bidirectional sealed plug valve for petroleum drilling

A rotary plug valve for square drill rods used in petroleum drilling blowout prevention

A rotary plug valve for square drill rods used in petroleum drilling blowout prevention

A spherical reaming drill stabilizer

A spherical reaming drill stabilizer

A sand-cleaning and well-perforating tool

A sand-cleaning and well-perforating tool

An arrow-shaped check valve

An arrow-shaped check valve

A check valve for anti-corrosion and blowout prevention in petroleum drilling and extraction

A check valve for anti-corrosion and blowout prevention in petroleum drilling and extraction

A multi-stage petroleum drilling stabilizer

A multi-stage petroleum drilling stabilizer

A petroleum drilling stabilizer with anti-wear sleeve

A petroleum drilling stabilizer with anti-wear sleeve

Quick Switch Standard Sleeve Head 2020

Quick Switch Standard Sleeve Head 2020

Quick Switch Standard Coupling Head 2019

Quick Switch Standard Coupling Head 2019

Controllable Flow Petroleum Drilling Blowout Preventer Check Valve

Controllable Flow Petroleum Drilling Blowout Preventer Check Valve

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