Casing and Tubing are produced in accordance with API specifications.

①SQUARE KELLY

②HEXAGONAL KELLY

③KELLY COCK

The Drill Collars are made of AISI 4145 H or 4145 H Modified alloy steel. Bores are trepanned from one direction with no mismatch. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.

The Heavy Weight Drill Pipe is made from one piece of AISI 4145H solid bar, fully heat-treated, all physical properties confirm with API Spec.7 Latest Editions. The wear-resistance hardbanding is standard on tool joints connections and central upset.

Drill Pipes are strictly fabricated according to API 5D (for pipe body) and SPEC 7 (for tool joint). - Connections are phosphatized or copperized in order to reduce the possibility of connection galling.

Fix drilled wellhead, connect wellhead casing string, seal and control the annular of casing, suspend tubing, control wellhead pressure and adjust flow rate, also include oil into outlet pipeline, shut off oil well when necessary, and apply to acid fracturing, water injection and test service.

Technical Features：It is a heavy-duty drop check valve with up to 10,000-PSI WP. OD 3 3/8 thru 9 1/2 inch

The Choke Manifold consists of choke valves, gate valves, line pipes, fittings, pressure gauges and other components. It is a necessary device of control the well kick and executes the pressure control on oil & gas well in the process of drilling. When BOP closed, it can control the final pressure from casing by adjusting the opening & closing of the choke valve, which avoid pollution of oil-layer and improve the speed of drilling and control blowout effectively.

Rigid steel design, durability, reliabilty and safety

YM hydraulic cathead is suitable to tighten or loosen joint by cooperating with Manual Tong. Its pull may be adjusted as needed. YM cathead has its series. There are four selections of pull: 5t, 8t, 10t, 16t. It is designed and manufactured according to API Spec 8A “Specification for Drilling and Production Hoisting Equipment”.

The hydraulic winch is a lifting equipment driven and braked hydraulically. It has the advantages of compact structure, light weight, convenient operation and stable lifting. It is used to lift heavy things in mines, ports and construction site. The winch is designed and manufactured according to API Spec 7K “Specification for Drilling Equipment”.

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JQH series Air winches are designed under the guide of "Ingersoll Rand" tehnology and working principal with light weight, compact construction, easy operation and maintenance. Stepless speed regulation. Introduction of Remote control system in Air winchese designs. Equivalent performance to Ingersoll Rand BU7A series products.