Quotation for large caliber spiral steel pipes coated with plastic inside and outside the factory

Description :

　　As a new type of material, large-diameter coated composite spiral steel pipe has the strength of steel pipes and the characteristics of corrosion resistance, wear resistance, and low fluid resistance compared to other metal pipes, plastic pipes, and composite pipes. It is a safe, hygienic, rigid, and well bonded green pipe that has been widely used in subway water supply and drainage systems and air conditioning water systems in recent years. Product characteristics of epoxy resin composite steel pipes with internal and external coating: 1. Excellent pressure bearing performance. 2. Excellent corrosion resistance. 3. Small coefficient of thermal expansion, no shrinkage deformation. 4. Smooth surface, low fluid resistance, no scaling, and unsuitable for microbial growth. 5. Its epoxy coating layer effectively solves the corrosion of metal pipelines caused by water transmission, burial, acid, alkali, and salt. 6. Pipeline connection method: using matching groove type pipe joints, malleable cast iron pipe threaded joints, flange connections, and coating repair free welding methods. Internally and externally coated composite steel pipes are steel plastic composite pipes made from welded steel pipes as the base material, using sandblasting chemical dual pretreatment, preheating, internal and external coating, curing, post-treatment and other processes. It has excellent comprehensive performance, strong corrosion resistance and mechanical properties, good chemical stability and water resistance, and has functions such as drag reduction, anti-corrosion, compression resistance, and antibacterial. It is generally not restricted by the conveying medium, and the coating layer has a strong bonding force with steel. Coating material: Epoxy resin (EP) is suitable for working environments below 80 ℃. The steel pipe coating has extremely high adhesion, high coating hardness, good impact resistance, and good chemical corrosion resistance.

　　The smooth pipe wall, good drainage performance, low fluid resistance, and no scaling of large-diameter coated composite spiral steel pipes are the * advantages compared to other pipelines, which can greatly reduce losses. At the same time, the linear expansion coefficient of large-diameter plastic coated pipes is very small, which makes them very advantageous as main water pipes, greatly overcoming the shortcomings of other plastics and ordinary pipes with large linear expansion coefficients. Large diameter coated steel pipes are cost-effective products that upgrade traditional steel plastic pipes and galvanized pipes. It has comprehensive characteristics, including high strength, high elongation, good low-temperature brittleness, and small expansion coefficient of steel pipes, as well as advantages such as corrosion resistance, wear resistance, and low fluid resistance of plastic pipes. It is widely used in various industries in China as a new type of green large-diameter pipe for water supply and drainage and anti-corrosion.

　　Coated steel pipe, also known as coated composite pipe, is a type of steel plastic composite pipe. Its process is to melt a layer of organic compounds such as polyethylene (PE) resin, epoxy (EP) powder, non-toxic polypropylene (PP) or non-toxic polyvinyl chloride (PVC) with a thickness of 0.5-1.0mm on the inner wall of the steel pipe to form a steel plastic composite pipe. It not only has the advantages of high strength, easy connection, and resistance to water flow impact of steel pipes, but also overcomes the disadvantages of steel pipes being prone to corrosion, pollution, scaling, and low strength when exposed to water. Its design life can reach 50 years. Its connection methods include threading, welding, flange and clamp connection, with main specifications ranging from Φ 15 to Φ 1200, and larger diameters can also be customized. Water supply and drainage coated steel pipe is a new type of composite pipe specially developed for water supply and drainage. This composite pipe combines the characteristics of various pipes, including the steel degree and hardness of steel pipes, as well as the advantages of wear resistance, corrosion resistance, and low friction coefficient of plastic pipes. It is a cost-effective green and energy-saving pipe material. Widely used in industrial water supply and drainage, domestic water supply and drainage, seawater treatment, HVAC circulating water, and chemical fluid transportation, it is known as the "green building material" title. Nowadays, many cities use plastic coated steel pipes for water supply, and the products of these underground pipelines need to meet the corresponding quality standards. If the quality of the general water supply steel pipe is poor, corrosion will occur after prolonged use, leading to pipe rupture and ultimately causing groundwater blockage, adding a lot of difficulties to our lives. Later on, the appearance of plastic coated steel pipes both inside and outside solved these problems. Internally and externally coated plastic steel pipes are more suitable for buried and humid environments, and can withstand high and low temperatures. They can withstand temperature tests. In addition to withstanding temperature tests, fire coated plastic steel pipes also have strong anti-interference capabilities. They can be used as cable sleeves, power coated plastic steel pipes, with good shielding functions, and water supply coated plastic steel pipes. The strength to withstand pressure is also good, and the maximum pressure can reach up to 60000 pascals. Of course, its insulation is also very good. The use of plastic coated steel pipes as cables can ensure that there is no leakage of electricity. During construction, it is also relatively easy to use and there are various ways of connection. You can choose the appropriate connection method according to different situations. Generally, during construction, workers choose welding, grooves, flanges, and wire connections according to different purposes.

　　The surface of large-diameter coated composite spiral steel pipes is smooth, with a low resistance coefficient when transporting liquids, no bacteria mixed in, and good anti grease and anti scaling abilities. In general, the fluid volume transported is 10% to 20% larger than that of steel pipes of the same diameter, and the power consumption of transportation is reduced by more than 15%, extending the service life by more than 10 times. Therefore, it can be said that coated steel pipes are a new type of pipeline material that is efficient, energy-saving, and corrosion-resistant. The technology of coating steel pipes with plastic has become relatively mature in industrialized countries abroad. Coated steel pipes have been widely used in many fields such as petroleum, chemical, construction, shipbuilding, communication, power, and underground gas pipelines. For example, 80% to 90% of water pipelines in countries such as the United States and Japan use coated steel pipes. However, this technology is only just emerging in China, and the coated steel pipes produced are still in their early stages with small usage, but their potential market is large. In oil pipelines, even if high-grade alloy steel or stainless steel pipes are used, their service life and corrosion resistance are far inferior to coated steel pipes; The pipeline used for extracting manganese ore from the seabed is made of coated steel pipes, which increase its service life by more than 5 times; Plastic coated steel pipes are used to transport liquids in atomic power plants, which not only have strong anti-corrosion ability and significantly improve service life, but also prevent nuclear radiation and increase the safety of nuclear power plants; Other pipelines such as natural gas pipelines and gas pipelines have increased their service life by 5-10 times due to the use of coated steel pipes; With the increasing number of high-rise buildings, in order to enhance corrosion resistance, the steel pipes used in water pipelines will gradually be replaced by coated steel pipes.

AfterSalesService :

• Spiral steel pipe factory