Non-magnetic Heavy Weight Drill Pipe

The non-magnetic heavy weight drill pipe is made from low carbon stainless steel. acc to API Spec. 7 and SY/T5144. All threads are phoshated, copperized or cold worked. All connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-shouldered and special threads.

API standard non-magnetic drill collar/Heavy Weight Drill Pipe/HWDP

Usage: Heavy Weight Drill Pipe/HWDP is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD. The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. It is made from premium alloyed steel. Its both tool joints and middle upset are welded hardbands.

Material: 4145H, 4145H Mod and non-magnetic material

Standard: According to API Spec 7-1 standard

Types: Integral and Friction welded

Integral Heavy Weight Drill Pipe

Integral Spiral Heavy Weight Drill Pipe

Hard band: Arnco100XT, Arnco200XT and Arnco300XT; Botn1000, Botn3000, TCS8000, TCS-Titanium, Armacor M etc. Also we can make according to customers’ requirements.

Heavy weight drill pipe (HWDP) is an important component used in oil and gas drilling operations, designed to handle the transition between the stiff drill collars and the more flexible drill pipe.

Positioned in the drill string, HWDP provides additional strength and weight, offering durability during high-torque drilling operations while reducing the risk of buckling in the drill string.

HWDP is thicker and stronger than standard drill pipe but lighter than drill collars.

This intermediate weight helps maintain wellbore stability, reduces wear on equipment, and provides the necessary weight-on-bit for effective drilling without causing excessive bending or fatigue.

It is commonly used in directional drilling where additional support is needed to control the trajectory of the well.

Manufacturers of heavy weight drill pipe typically use high-grade steel alloys to ensure durability and resistance to the harsh conditions of deep drilling.

These pipes are often designed to meet API (American Petroleum Institute) standards, ensuring high performance under extreme pressure and temperature conditions.

China has become a leading supplier and exporter of HWDP, offering competitively priced products that meet international specifications.

Chinese manufacturers focus on precision engineering, providing durable, high-strength heavy weight drill pipe to oilfield operations worldwide.