Quality inspection

Chongqing World Steel Co.,LTD -Product quality assurance

Each product must be strictly inspected before delivery and then packed。

        -Surface inspection 

        -Outer diameter inspection

        -Wall thickness inspection

        -Material inspection

        -Mechanical property inspection

        -Chemical property inspection

Our Mill Test Certificate is supplied with shipment. 

         If needed, a Third Party Inspection is acceptable.

OD and ID Surface inspection

Outer diameter inspection

Thickness inspection

PMI 100%  inspection

Endoscopy inspection

PMI 100%  inspection

PMI 100%  inspection

Roughness inspection

PT(Penetrant testing) inspection

Strict production

        Regard the production line as the lifeline of the enterprise,

        Strict and standardized production procedures,

        Precise and exquisite production technology.

Follow the process

        Turn products into fine products in your hands,

        Advanced high, precision and advanced equipment,

        Ensure high-quality products.

High quality

        Fine processing, manufacturing high-quality products,

        Advanced processing equipment, meticulous testing methods,

        It ensures the stability and reliability of the product.