The inner and outer plastic-coated composite steel pipe is a steel-plastic composite pipe which is made of welded steel pipe as the base material and adopts sandblasting chemical double pretreatment, preheating, inner and outer coating, solidification and post-treatment. It has excellent comprehensive properties, strong corrosion resistance and mechanical properties, good chemical stability and water resistance, with drag reduction, corrosion, compression resistance, antibacterial and other functions. It is generally not subject to the transport medium, and the coating layer has a strong binding force with steel. Coating Material: Epoxy resin (EP) is suitable for working environment below 80 C. The steel pipe coating has high adhesion, high hardness, good impact resistance, and good chemical corrosion resistance. High mechanical strength, suitable for harsh use environment; internal and external coatings can prevent metal oxidation, with better chemical corrosion resistance; coating adhesion, bonding strength, good impact resistance; low roughness coefficient and friction coefficient, good adhesion to foreign bodies; anti-aging, long service life, especially suitable Underground water conveyance.
The strength of spiral welded pipes produced by the manufacturer of coated plastic clad pipes is generally higher than that of straight welded pipes. It is possible to produce large diameter welded pipes with narrow blanks, and different diameter welded pipes with the same width of blanks. Large-scale spiral welded pipe adopts double-sided submerged arc welding technology. The submerged arc welding has the advantages of stable welding quality, high welding productivity, no arc and little smoke and dust. The main parameters are outer diameter, wall thickness, length and so on. The main mechanical tests of plastic coated composite steel pipes are water pressure, bending, flattening and so on.
Plastic clad pipe manufacturer Plastic clad pipe manufacturer in the arc around the welding flux melting into a cavity. The void and molten pool move forward and the metal behind the pool solidifies to form a continuous weld. This process is carried out under flux, so we can't see it with naked eyes. It can be seen by means of X ray photography. The manufacturer of plastic-coated clad steel pipe uses submerged arc welding technology for spiral steel pipe, in addition to this high production efficiency, less auxiliary production time, saving the time to change the electrode, clean welding conditions without spatter, saving cleaning time, high weld quality.
Fire-fighting coated pipe fittings not only have the advantages of high strength, easy connection, water shock resistance and so on, but also overcome the characteristics of easy corrosion, pollution and structure of steel pipe after water, and overcome the shortcomings of low strength and poor fire-fighting performance of plastic pipe. Therefore, the fire coating plastic pipe has been widely applied since its development. Why is the temperature resistance of the externally and externally coated epoxy composite steel pipe higher than others? The modified heavy-duty epoxy resin powder used in the composite steel pipe has excellent chemical corrosion resistance, which fundamentally solves many problems such as rusting corrosion on the surface and scaling on the inner wall of the same product after long-term use and avoids the occurrence of internal corrosion. The blockage affects the usage phenomenon, thus greatly improving the service life of the fire fighting special pipe. Because of the addition of flame retardant material in the coating material, the temperature resistance of the product is improved compared with other similar products. So when the ambient temperature rises sharply, it will not affect the use.
