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Heavy Weight Drill Pipe // Outer Diameter 88.9 mm. Inner Diameter 57.15 mm Grade AISI4145H Weight 362 kg

Supplier Tianhe Oil Group

Outer Diameter

Inner Diameter



Product Technical Configuration

Outer Diameter 88.9 mm.
Grade AISI4145H
Inner Diameter 57.15 mm
Weight 362 kg

Product country of origin: China

Location of the product: China

Available:  For Sale

Supplier reference: Z07-03000

Original manufacturer: Tianhe Oil Group

Finalized quotes will be sent directly to the supplier


Heavy Weight Drill Pipe (HWDP ) is an intermediate weight drill stem component which is used in conjunction with the drill pipes and drill collars.

It has smaller wall thickness than drill collar and bigger wall thickness than drill pipe.

We use HWDP between drill pipe and drill collar to prevent sudden change of drill string section and reduce fatigue of drill pipe.


HWDP is also a good way to Reducing torque and increase load when we need to drill much deeper.

We can save a lot of time by not using lifting sub and safety clamps when we choose HWDP in the drill stem.

We use HWDP in directional drilling can keep a highly drilling speed under a lower drilling torque that reduce the wear and rupture of the drill string.

Compared with the drill collar HWDP has low rigidity, and wall contact area is small, so differential pressure sticking will not happen easily.


Tianhe Oil Group Co. Ltd. is a global group. We are specialized in the production of drilling tools, including R&D, production, selling, leasing, maintenance and services. Tianhe has 5 main businesses spread across the globe in more than 50 countries in the world.

Tianhe Oil Group management prioritize its people, technology, continuous improvement and building brand awareness. Our mission is to continuously strive innovation and improvement and expand our business in the oilfield. We increased the investment in technology research and development, always looking to provide our global customers with the best technical products and services.

Tianhe Oil Group strongly believes and promotes Total Quality Management, implements the ISO quality management system, HSE management system and API standards. Our manufacturing facilities are well equipped with four automated induction heat treatment lines and dozens of other types of heat treatment ovens and well furnaces (Box type, well type, carburizing heat treatment furnace) to ensure full coverage of heat treatment required by the different products.

So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries. For example, we have partnered with Schlumberger, Halliburton, Baker Hughes, Weatherford, Shell, NOV, etc.

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Related Product Variants

Product Name Outer Diameter Grade Inner Diameter Weight
Heavy Weight Drill Pipe 168.28 mm AISI4145H 101.6 mm 1185 kg
Heavy Weight Drill Pipe 4 1/2" AISI4145H 68.28 mm 591 kg
Heavy Weight Drill Pipe 4" AISI4145H 63.5 mm 434 kg
Heavy Weight Drill Pipe 5 1/2" AISI4145H 82.55 mm 842 kg
Heavy Weight Drill Pipe 5" AISI4145H 76.2 mm. 702 kg
Heavy Weight Drill Pipe 88.9 mm. AISI4145H 57.15 mm 362 kg

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