The purchase of Raw material
The first step for producing 100% satisfactory seamless pipe and tube is to make sure the raw material is 100% satisfying. We stringently inspect and test the incoming raw material under the framework of ISO9001:2008.

Inspect the raw material
The testing includes chemical composition analysis, inter-granular corrosion and mechanical properties. The test results will be reported to quality assurance department, which judges if the raw material is passed and can be warehoused for forthcoming production. Our main suppliers are Tisco, Bao Steel, Huzhou Yongxin, etc. We also import from major oversea billet manufacturers for some special grades.

Eddy current test	Impact test
Ultrasonic test	PMI test
Ultrasonic test	Chemical composition analysis
Testing team	Tensile test
Metallographic test	Hardness test
Final inspection	professional packaging