Plastic-lined steel pipes are based on galvanized pipe (seamless pipes and welded pipes). After removing the welding ribs on the inner wall, they are lined with food-grade polyethylene (PE) pipes with the same diameter as the galvanized pipe, and finally pressurized and heated for a certain period of time. It is an upgraded product of the traditional galvanized pipe.
Advantages of plastic lined steel pipe
1. Wide range of applications and complete specifications and varieties:
2. Unique production process:
The plastic-lined steel pipe embedded with inner reinforcement adopts a unique mechanical drawing composite process, which compresses the inner plastic pipe by reducing the diameter of the metal pipe, so that the two materials have a permanent and reasonable interference. Coupled with the embedding effect of the uniquely designed pattern inner ribs on the inner surface of the welded pipe on the outer surface of the plastic pipe, as well as the physical and chemical modification of the plastic pipe before compounding. The plastic-lined steel pipe embedded with inner reinforcement has the technical characteristics of no delamination, no shrinkage, and long-term use.
3. The connection method is reliable and fast:
The plastic-lined steel pipe embedded with inner reinforcement uses the principle of cold extrusion to form a small arc groove at a certain distance from the end surface of the pipe. Then put the spring-type stainless steel snap ring into the groove, put on the nut or the expansion interface, the new enamel pipe fittings and its accessories, and tighten it, and the installation is quick. Due to the self-locking design of the tapered surface of the fitting part of the snap ring and the two-way sealing design of the end and radial directions, it has reliable connection strength and anti-leakage performance. At the same time, due to the detachable structure of all pipe joints and the use of special union pipes, it is extremely convenient to maintain.
4. Perfect anti-corrosion measures on the outer surface:
The outer surface of the plastic-lined steel pipe embedded with inner reinforcement adopts three layers of anti-corrosion measures: the first layer is a galvanized layer, and the steel pipe forms a cathode for protection and anti-rust. The second layer: epoxy primer, which forms a dense polymer protective film on the surface of the galvanized layer to isolate it from air and water, slow down the oxidation and corrosion of the zinc layer, and thus increase the service life of the pipe. The third layer: top coat, which strengthens the protective effect of the film and improves the aesthetics of the product.
5. The wall thickness of the welded pipe is reasonable:
Compared with traditional galvanized steel pipes, the wall thickness is more reasonable, and the economy has obvious potential.
Disadvantages of plastic lined steel pipe
1. High cost
2. Time-consuming and labor-intensive installation
3. It cannot completely solve the problem of water pollution caused by the connection part of the pipe fittings
Advantages of plastic lined steel pipe
1. Wide range of applications and complete specifications and varieties:
2. Unique production process:
The plastic-lined steel pipe embedded with inner reinforcement adopts a unique mechanical drawing composite process, which compresses the inner plastic pipe by reducing the diameter of the metal pipe, so that the two materials have a permanent and reasonable interference. Coupled with the embedding effect of the uniquely designed pattern inner ribs on the inner surface of the welded pipe on the outer surface of the plastic pipe, as well as the physical and chemical modification of the plastic pipe before compounding. The plastic-lined steel pipe embedded with inner reinforcement has the technical characteristics of no delamination, no shrinkage, and long-term use.
3. The connection method is reliable and fast:
The plastic-lined steel pipe embedded with inner reinforcement uses the principle of cold extrusion to form a small arc groove at a certain distance from the end surface of the pipe. Then put the spring-type stainless steel snap ring into the groove, put on the nut or the expansion interface, the new enamel pipe fittings and its accessories, and tighten it, and the installation is quick. Due to the self-locking design of the tapered surface of the fitting part of the snap ring and the two-way sealing design of the end and radial directions, it has reliable connection strength and anti-leakage performance. At the same time, due to the detachable structure of all pipe joints and the use of special union pipes, it is extremely convenient to maintain.
4. Perfect anti-corrosion measures on the outer surface:
The outer surface of the plastic-lined steel pipe embedded with inner reinforcement adopts three layers of anti-corrosion measures: the first layer is a galvanized layer, and the steel pipe forms a cathode for protection and anti-rust. The second layer: epoxy primer, which forms a dense polymer protective film on the surface of the galvanized layer to isolate it from air and water, slow down the oxidation and corrosion of the zinc layer, and thus increase the service life of the pipe. The third layer: top coat, which strengthens the protective effect of the film and improves the aesthetics of the product.
5. The wall thickness of the welded pipe is reasonable:
Compared with traditional galvanized steel pipes, the wall thickness is more reasonable, and the economy has obvious potential.
Disadvantages of plastic lined steel pipe
1. High cost
2. Time-consuming and labor-intensive installation
3. It cannot completely solve the problem of water pollution caused by the connection part of the pipe fittings
