Suzhou Seamless Steel Tube Works was founded in 1988, invested by Bao Steel. It now belongs to Double Gold Enterprise. With 20 years' professional practice in seamless steel pipe industry, the mill has been well recognized and respected by its clients, industrial fellows and 3rd party inspection organizations for its excellence in both products and services. We offer a wide range of seamless tube products, 80% of which were exported to 52 countries and regions all over the world.
Our factory has abundant technique force and we have a group of technical staff proficient in steel tube technology. Through its many years' experience, the factory has established a complete Quality Assurance System. We obtained Manufactory Certificate for high pressure boiler in 1995. Then, we earned "AAA" credit rating as well as ISO9002 certification in July, 2002. Accordingly, we were awarded PED, API, TS16949 and KR, LRS, DNV for our series of products.
We also have various kinds of complete and advanced detecting equipment systems to ensure the quality of our products, such as computer direct reading spectrometer, metallographic microscope, hardness testing machine, drop testing machine, universal testing machine, Eddy-current, and ultrasonic detector and so on.
Boiler Tubes (Carbon Steel & Alloy Steel)
Tubes for Heat Exchanger
Tubes for Automotive
Tubing and Casing, Line Pipes
Tubes for Ship-building
Tubes for Fluid Transportation
Inner Threaded Tubes
Billet Inspection → Scale Removal → Acid Clean → Billet Cutting → Heating → Piercing →Forming Head → Acid Picking, Phosphating, Saponificationg → Cold Drawn → Heat Treatment → Mechanical Properties Inspection → Straightening → Cutting Ends → Surfance Treatment → Finish products Inspection Dimension and surface check, Eddy Current Test, Ultrasonic Test, Hydrostatic Test → Antirust treatment → Packing