Our company is a professional manufacturer of OCTG casing and tubing pipes under API Spec. 5CT.

In order to assure product quality, our company has established inside quality Control Lab with advanced chemical and physical inspection equipment, such as metallographic microscopes, and NDT testing equipment and so on. We also have following inspections to ensure product quality.

Size and surface inspection

Non-destruction test

Thread Inspection

Hydrostatic test

Drifting test

Physical and chemical analysis

Hardness and pressure test

The third party certification