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Wear Sub // Casing Size 7" Outer Diameter 121 mm Inner Diameter 38.1 Grade AISI4145H Weight 98 kg

Supplier Tianhe Oil Group

Casing Size

Outer Diameter

Inner Diameter



Sub OD

Product Technical Configuration

Outer Diameter 121 mm
Casing Size 7"
Grade AISI4145H
Inner Diameter 38.1
Weight 98 kg
Sub OD 143 mm

Product country of origin: China

Location of the product: China

Available:  For Sale

Supplier reference: J1408010-1

Original manufacturer: Tianhe Oil Group

Finalized quotes will be sent directly to the supplier


Wear Sub is used to avoid the wear between drill pipes, tool joints and casings.

With features such as compact structure and easy operating, wear sub can prolong the service life of drill pipe and casing and reduce the vibration and trembling of drilling tools.


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 Configuration
Wear Sub Outer Diameter 180 mm
Casing Size 10 3/4"
Grade AISI4145H
Inner Diameter 71.4
Weight 156 kg
Sub OD 225 mm
Wear Sub Outer Diameter 203 mm
Casing Size 13 3/8"
Grade AISI4145H
Inner Diameter 71.4
Weight 178 kg
Sub OD 285 mm
Wear Sub Outer Diameter 121 mm
Casing Size 7"
Grade AISI4145H
Inner Diameter 38.1
Weight 98 kg
Sub OD 143 mm
Wear Sub Outer Diameter 168 mm
Casing Size 9 5/8"
Grade AISI4145H
Inner Diameter 71.4
Weight 106 kg
Sub OD 190 mm
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