... OriginJiangsu, China (Mainland)Secondary Or NotNon-secondaryApplicationFluit PipeTechniqueHot RolledCertificationAPISurface TreatmentBlack paint,varnishi coating,galvanized,cooper coated or as your requirementSpecial PipeAPI ... , Q345, A106B, ST37, ST52Outer DiameterDN100-DN900 Advantage: • Fusion bonded Epoxy-coated Steel Pipe • Excellent Corrosion Protection. • More than 10 Years ...