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رقابة جودة

 

The raw materials of Huayang steel pipes are directly supplied by Shougang, Jigang, Puyang, Ruifeng, Nangang, Handan Steel and other large steel plants. The raw materials can be put into storage only after passing the chemical analysis, mechanical property, surface defect inspection, feeding and unsealing, looper, forming, welding, weld heat treatment, sizing, pressure flaw detection and manual inspection. The perfect logistics leads to the whole country, with direct transportation and distribution lines, one-stop service for vehicles and less than carload, and a perfect service system. You can feel relieved before, during and after sales.

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