The use of steel-plastic composite steel pipes and galvanized plastic-lined composite steel pipes as drinking water pipes has completely solved the problem of secondary pollution caused by the use of galvanized pipes in the past, which is a revolution in the pipeline industry. Both have the characteristics of high mechanical strength, stable pressure-bearing performance, and long service life, but there are essential differences between the two. Reliable steel-plastic composite steel pipes have more advantages.
1. Better performance:
The steel-plastic composite steel pipe is a composite pipe with a five-layer structure. The inner pipe is an HDPE pipe that is continuously extruded by an extruder. The advantages of small and small water head loss; the outer PE layer is anti-corrosion, anti-aging, and has a decorative effect. The inner and outer PE layers are firmly bonded to the reinforced steel strip in the middle through special high-temperature hot melt adhesive. This bonding overcomes the delamination phenomenon caused by the large difference in linear expansion coefficient between the plastic and the steel strip, thus improving the steel-plastic composite. The service temperature of the steel pipe is not only used in cold water. However, when the galvanized plastic-lined composite steel pipe is used in the hot water system, the inner and outer layers will expand and shrink unevenly and delaminate.
2. Easier to install:
Steel-plastic composite steel pipe has the characteristics of being a lightweight, low price, convenient for installation, and construction, etc. Its connection method mainly adopts the mechanical connection of copper pipe fittings and the hot-melt connection of plastic pipe fittings. These two connection methods are fast, firm, easy to operate, and do not leak. . The galvanized plastic-lined composite steel pipe is mechanically connected with tapped buckle and compressed with a groove snap ring. The joints are prone to rust, fall off, water seepage, high maintenance costs, and are more likely to cause water pollution. In short, as a substitute for traditional galvanized steel pipes, steel-plastic composite steel pipes have been widely used in the field of drinking water pipelines. Compared with galvanized plastic-lined composite steel pipes, steel-plastic composite steel pipes have a better service life and corrosion resistance. Steel-plastic composite steel pipe has the excellent performance of galvanized steel pipe and pure plastic pipe. Considering sanitation, service life, production energy consumption and cost, anti-corrosion, and pressure resistance, compared with galvanized plastic-lined composite steel pipe, it is a higher grade. grade drinking water pipelines.
Steel-plastic composite steel pipe can also be called steel-plastic steel pipe. Its base material is mainly steel pipe, and the surface is coated with plastic material. Therefore, from the analysis of the pipeline structure, the steel-plastic composite steel pipe not only has the high strength and toughness of the steel pipe, but also has high-pressure resistance, impact resistance, and crack resistance. Steel-plastic composite steel pipes with stable quality not only have the advantages of galvanized plastic-lined composite steel pipes but also have more advantages that they do not have.
Post time: Jan-30-2023