3PE anti-corrosion steel pipe structure and prospect analysis

3PE anti-corrosion generally consists of three layers with three layers. The first layer of epoxy powder (FBE> 100um), the second layer of adhesive (AD) 170 ～ 250um, and the third layer of polyethylene (PE) 2.5 ～ 3.7mm. The materials are mixed and blended into one body, and processed to make it firmly combined with the steel pipe to form an excellent anti-corrosion layer. The processing methods are generally divided into two types: winding type and round die covering type.

Corrosion-resistant pipelines can be divided into two types, lined with anti-corrosion steel pipes and outer wall anti-corrosion steel pipes. The anti-corrosion lining mainly includes cement mortar lining anti-corrosion steel pipe, which has more applications and lower cost. 3PE anti-corrosion steel pipelines are mostly used for external wall anti-corrosion pipelines. Anti-corrosion technology is the process of covering the outer or inner wall of steel pipe with anti-corrosion coating to protect the pipeline itself. All kinds of pipes such as straight seam steel pipes and spiral steel pipes can be processed.

At present, the domestic anti-corrosion steel pipe market has broad prospects in many fields. There are various manufacturing processes for anti-corrosion steel pipes. 3PE anti-corrosion steel pipes, steel-clad steel anti-corrosion steel pipes and 8710 anti-corrosion steel pipes are widely used in China. In the delivery of steam or other media below 2.5MPa and 350 degrees Celsius, a steel-jacketed steel steam composite insulation pipe is usually used. 3PE anti-corrosion steel pipelines are usually made of roll forming, high-frequency welding, extrusion, cooling, sizing, flying saw cutting and other components in the production. frame. According to skin effect and proximity effect, the butt weld produces a strong and concentrated thermal effect at the opening of the tube blank, which can be quickly heated to the temperature required for welding and squeezed by the pressing roller to achieve intercrystalline bonding.