With more than ten years experience in supplying our customers with good quality and price.We produce the tubes and pipes according to GB, ASTM/ASME, API, JIS, BS, EN and DIN specifications. the Outside Diameter is from 13.7mm to 609.6mm (17.1 609.6) and Wall Thickness is from 1mm to 36mm. The annual output is more than 100,000tons.