Changsha best 3PE anticorrosion seamless steel pipe to improve the whole environment led us 3pe anti-corrosion steel market conditions improved. Efforts to develop new technology to produce lower-cost technology 3pe better anti-corrosion steel for customers. You are welcome to visit the guidance. Outline Outline 3PE anticorrosion coating 3PE three powder coating currently used epoxy powder electrostatic and thermal spraying, the middle and the outer polyethylene adhesive extruder hot extrusion molding wrapping or extrusion coating. But for the spiral welded steel pipe and welded steel pipe directly, either by extrusion molding or extrusion overmolding wound seam side always flawed. And at low temperatures, since the intermediate adhesive and epoxy powder there is no physical penetration, when the coating by external shocks, the impact area may damage the coating occur. If using three 3PE powder coating, which coating accomplished by depositing melt can reduce weld defects in the coating, and the powder of mutual penetration weld increases the contact area, to further increase the chemical bond at a low temperature state less prone to impact crusher circumstances, the use of three kinds of powder materials forming three PE coating has a certain value. Three kinds of powder coating 3PE anti-corrosion coating process: steel surface treatment (rust) → frequency heating → epoxy powder coating powder coating → → intermediate adhesive polyethylene powder coating leveling → → cooling stereotypes. 3PE anti-corrosion steel market outlook and investment: by the international economic turmoil, foreign spiral steel demand is still sluggish, and because of the high price spiral steel pipe, making it less competitive in the international arena, thereby seriously affecting the spiral steel export volume in China. According to latest customs statistics: April spiral steel exports 1.41 million tons, compared with March down 26 million tonnes, compared to the same period in 2011 decreased 70.5%; January-April total exports of 6.55 million tons, down 59.5% . In early May, the average daily consumption fell to expand the national system call is about 4.3%. Earlier, in late April the electricity consumption fell 3.6%, 4.3% and 3.6%. Since China's industrial electricity accounts for about 75% of the total domestic electricity consumption, can reduce electricity consumption shows that our economy has not fully recovered, spiral steel demand is still not a good imagination. China is currently transporting natural gas 3PE anticorrosion seamless high-volume applications, GB 3PE anti-corrosion spiral steel pipe, but the reliability of his findings: 3PE coating for use in the domestic debate occurs, Petroleum Engineering Technology Research Institute by Beijing China oil and gas Limited commissioned to complete the "Shaanxi-Beijing gas pipeline external corrosion polyethylene coating Safety Assessment of three-layer structure of the system." The study included literature collected from abroad to Beijing, China Oil & Gas Ltd. 2001 - Excavation of pipeline external coating inspection carried out in 2003 and the result is not the excavation inspection analysis, and the Shaanxi-Beijing pipeline unused open dumps in North China Petroleum Steel Pipe Factory 3PE anticorrosion performance test 2 years and 6 years, the following conclusions: the current domestic and international coating application effect is very good, very few defects reported in its use. The main disadvantage of the reported dew point, stripping, cathodic stripping, cathodic protection shielding film release coating under corrosion, and most reports of deficiencies still remain in the theoretical speculation stage, if the information mentioned in cathodic protection shield issue to There does not appear on the actual operation of the coating cathodic protection shield instances reported. After years of practice has shown that with the increase of service life, minimal defects in the coating system is FBE / extruded polyethylene three-layer structure coating systems.