What is the classification of composite pipes?
For the water pipes often used in our families, I believe the owners will not feel strange, because even if we rarely see the existence of water pipes in our lives, the role of water pipes in home decoration can not be ignored. In the market, many water pipes are made of composite pipes. So, what is the classification of composite pipes in the market? This is what many people want to know. Now, the Jiuzheng pipe network is compiled to tell you the classification of composite pipes.
Type introduction of composite pipe 1. Aluminum plastic composite pipe
It is the earliest water supply pipe to replace the cast iron pipe. Its basic composition should be five layers, that is, from inside to outside, it is plastic, hot melt adhesive, aluminum alloy, hot melt adhesive, plastic, etc.
The aluminum-plastic composite pipe has good heat preservation performance, and the inner and outer walls are not easy to corrode. Because the inner wall is smooth, the fluid resistance is very small; and because it can be bent at will, it is convenient to install and construct. As a water supply pipe, the aluminum-plastic composite pipe has enough strength, but if the lateral force is too large, it will affect the strength. Therefore, it is appropriate to construct the pipe exposed or buried in the wall, but not buried underground. The connection of aluminum-plastic composite pipe is ferrule type, so in the construction, one is to pass a strict pressure test to check whether the connection is firm. The second is to prevent frequent vibration and make the ferrule lose. Third, enough installation amount should be reserved in the length direction to avoid pulling off.
Type introduction of composite pipe 2. Steel plastic composite pipe
The steel plastic composite pipe is based on seamless steel pipe and welded steel pipe. The inner wall is coated with polyethylene powder coating or epoxy resin coating with high adhesion, anti-corrosion, and food-grade hygiene. The composite steel pipe with zinc coating and plastic coating for water supply made by pretreatment, preheating, internal coating, leveling and post-treatment processes is an upgraded product of traditional galvanized pipe. Product implementation of the Ministry of construction cjt120-2000 industry standards. The diameter range of DN 15 — DN 1200 can be coated with flange and pressure groove, with lengths of 6m, 9m, 12m, and indefinite lengths. The coating wall thickness is between 100 μ m and 500 μ m, usually, 350 μ M. Pipeline interface screw connection, flange connection, pre-treatment of clamp connection, chemical immersion method, physical sandblasting method, coating type, thermoplastic polyethylene powder (PE), thermosetting epoxy resin powder (EP) and other powder coatings.
1. It is hygienic, non-toxic, does not scale, does not breed microorganisms, and ensures fluid quality
2. It is resistant to chemical corrosion, soil and marine biological corrosion, and cathodic stripping
3. The installation process is mature, convenient, and fast, and the connection with the ordinary galvanized pipe is the same
4. Good weather resistance, suitable for desert, saline-alkali, and another harsh environments
5. Smooth pipe wall, high conveying efficiency, and long service life
Type introduction of composite pipe 3. Outer layer fusion type
The outer fusion type aluminum-plastic composite pipe comprises an outer layer of random copolymer polypropylene co-extrusion plastic layer, the inner surface of the random copolymer polypropylene co-extrusion plastic layer is connected with a hot-melt adhesive layer, the inner surface of the hot-melt adhesive layer is connected with an aluminum pipe layer, the inner surface of the aluminum pipe layer is connected with a hot-melt adhesive layer, and the inner surface of the hot-melt adhesive layer is connected with a polyethylene coextrusion plastic layer; The utility model has the advantages of excellent high temperature resistance and small thermal deformation of aluminum-plastic composite pipe, and the reliability of hot-melt connection with PP-R pipe, which can be widely used in the fields of cold and hot water pipe and drinking water system, heating pipe, floor, wall, heating system, solar heating, cooling system, industrial fluid conveying system, central air conditioning system, compressed air pipeline system, etc.
Type introduction of composite pipe 4. Lined stainless steel bimetal composite type
Lined with stainless steel composite pipe, the product is based on galvanized steel pipe and lined with thin-wall stainless steel, which can not only meet the advantages of stainless steel safety, health, health, and durability but also eliminate the pollution problem of plastic pipe. The price is much lower than that of copper pipe and stainless steel pipe, and it can be installed and constructed safely, conveniently, and reliably with high pressure bearing capacity. It is a new type of environmental protection, a green energy-saving product.