the company now holds one OD140-OD381 middle straight seam steel pipe production line and four production lines ofOD219-OD2032 bifilar double-side spiral welding pipes with submerged arcs. It has imported Lincoin auto-welding equipments from the USA and advanced steel pipes production equipments from Germany which are of specific characteristic both in workmanship and technology. Thus makes it easy to produce qualified steel pipes of Q235,Q345 and X42-X70 grades ERWl steel pipe especial large size according to the standards of petroleum industry, we can produce DIN standard of ST37-2 Etc ,oil casing and thick wall seamless pipe national regulations and the API spec 5Lstandards of American Petroleum ,coal gas, natural gasenhanced quality control of the product and purchased many kinds of advanced inspecting equipments including online ultrasonic auto flaw detector, X-ray industrial TV.X-ray real time imagery system 2,000t static hydraulic pressure tester, universal material testing machine, charpy impact tester, sulphur carbide analyses machine and many other important inspecting systems which assured product`s development. The company has passed ISO 9002 quality attestation in 2000,and switched from 9001 to2000 successfully, in August.2003, it has passed API 5L 5CT attestation by American Petroleum Institute and was authorized to use its symbol. if you need steel pipe ,pls send email to me .
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