Our company is a leading supplier of carbon steel & alloy steel pipes, etc in China. Available in various grades and dimension, our range meet the demand of our clients, 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. We passed the ISO9001 Quality Assurance System.