... cold rolled] 3. seamless 4. "D" type with high quality Products DetailesName carbon steel pipeTechiqueCold DrawnStandardGB/T8162,GB ... hoof, hexagonal,rectangular and squaresurfaceOiled or Black painted to prevent rustInner PackingCaps at both ends, steel strong ... interested in our products , please do not hesitate to contact with me for more information. Thanks.Foreign Trading DepartmentContact : Nancy ...