China has yet to develop 3PP coating industry standards, the processing pipeline corrosion general 3PP Germany DIN30678 "steel pipe polypropylene coating" standards. 3PP pipeline corrosion coating mainly used for transporting high temperature of the medium and used as a high surface temperature, the longer duration of sunshine desert pipeline coating, so a higher surface temperature, according to the region longer underground water, gas, gained more and more widely on the pipeline. Product Specifications: Ф25mm-Ф1820mm, wall thickness of 6mm-20mm. Material: Q235B, Q345B, 10 # steel, 20 # steel, X42-X80 grade and so on. Uses: widely used in oil pipelines, gas pipelines, heating pipes, water pipes. Implementation of the standards: DIN30678 "polypropylene coating technology standard pipe and fittings."