Henan Shenlong Petroleum Drilling Tools Co.,Ltd

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Non-Destructive Examination


All materials in Shenlong’s facility have been examined for both surface and internal defects.


Ultrasonic Tests are utilized through the entire process. Material coming into factory, after heat-treated (or forging), finished products, there are at least 3 times of Ultrasonic Tests for each products.


Magnetic Particle Examination has been performed to detect surface defects and thread defects. 

Employees who perform NDE have valid Level II certificate.

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Non-magnetic Drill collar      Drill collar

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