Alloy tube used to perform standard

　　GB/T8162---- China national standard alloy tube

　　GB/T6479---- China national standards

　　GB/T9948---- China national standards

　　GB5310 -- China national standards

　　ASME SA210 -- American boiler and Pressure Vessel Standards

　　ASME SA213 -- American boiler and Pressure Vessel Standards

　　DIN17175 -- the Federal German industrial standard

　　other factors: stainless steel raw materials, storage in the buying process, due to the lifting, transport process occurs the bump and scratch is relatively serious, is also one of the causes of corrosion attack.

　　We have adopted advanced production equipment and technologies to manufacture our seamless steel pipe and oil pipe,which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.