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Non-magnetic drill collars

Non-magnetic drill collars

  Non-magnetic drill collar adopts a kind of chrome manganese alloy steel as material, low carbon obtained by combining a proprietary chemical analysis and rotary hammer process. The material is resistant to corrosion crack, with low magnetic conductivity, with no tendency to galling and high wearproof performances.  Magnetic permeability (when MPS=1105/4NM) relative...

Spiral drill collars

Spiral drill collars

  Spiral drill collar is a kind of products of our company. Spiral grooves make mud circulate freely around the drill collar to equalize pressure for sake of drill pipe sticking. It reduces the probability of sticking occurrence due to different pressure through reduction of touching area. Spiral drill collar is widely used because of its special structure. The special grooves...

Integral heavy weight drill pipes

Integral heavy weight drill pipes

   Because of its relatively low steel strength, it reduces directional resisting and minimizes contact fatigue, both of which are common problems in large angle or horizontal drilling. The reduced number of pipe failures and increased drill pipe life also make it appropriate for some straight hole’s drilling.

casing and tubing

casing and tubing

  N80/P110/J55/K55    for material API 5CT

our patent ARMACOR hardbanding

our patent ARMACOR hardbanding

  This product is the patent product in our company. Its useful life is much longer than other same product in this field. The product has always been accepted and appraised by many our clients.

drill collar

drill collar

The drill collar are trepanned and drifted to API Spec 7. Grinding crafts adopted finish boring technology eliminates regions of the weld stress concentration, making welding appearance more perfect, and increasing their life. The full length thermal treatment ensure the mechanical performance fullfil even exceed API Spec 7 requirements.

drill pipe

drill pipe

  The drill pipes are conformed to API 5D,API SPEC 7. The material of drill pipe body is up to the 1&3 group of API 5D.(Group 1---grade E75;Group 3---grade X95,G105,S135 ) The matching tool joints are according to your requirements which are up to API standards.