As an important part of construction and municipal construction, water supply and drainage pipes are widely used in the urban construction process of various countries. Therefore, the selection of water supply and drainage pipes is particularly important in the construction process.
Seamless steel pipes have excellent corrosion resistance, high strength and reliability. Seamless steel pipes have been widely used in the field of water supply and drainage.
Introduction to common building water supply and drainage pipes
1. Rigid polyvinyl chloride (PVC-U) water supply pipe
PVC-U pipes are made of sanitary grade polyvinyl chloride (PVC) resin as the main raw material, adding appropriate amounts of stabilizers, lubricants, fillers, color enhancers, etc., and are extruded and injection molded using a plastic PVC-U drainage pipe material extruder. Machine injection molding completes the production of pipes and fittings through cooling, solidification, shaping, inspection, packaging and other processes. It has excellent physical and chemical properties, chemical corrosion resistance, high impact strength, low fluid resistance, 30% higher flow rate than cast iron pipes of the same diameter, aging resistance, long service life, and a service life of not less than 50 years. It is an ideal material for building water supply and drainage. It is light, durable, easy to install, and effectively speeds up the project progress. Save construction costs. Compared with cast iron pipes of the same specifications, the construction costs can be greatly reduced.
2. Random copolymer polypropylene (PP-R) water supply pipe
PP-R pipe is also called type III polypropylene pipe. It is made of random copolymerized polypropylene, which is extruded into pipes and injection molded into pipe fittings. It is a new plastic pipe product developed and applied in Europe in the early 1990s. PP-R is a new generation pipe material that uses a gas phase copolymerization process to randomly and uniformly polymerize about 5% PE in the molecular chain of PP (random copolymerization) in the late 1980s. It has good impact resistance and long-term creep performance.
3. Aluminum-plastic composite water supply pipe
Aluminum-plastic composite pipe is the earliest water supply pipe to replace cast iron pipe. Its basic composition should be five layers, that is, plastic, hot melt adhesive, aluminum alloy, hot melt adhesive, and plastic from the inside to the outside. There are three main types of aluminum-plastic water supply pipes on the market: the first is that the inner and outer layers are made of polyethylene, the second is that the inner and outer layers are made of cross-linked polyethylene, and the third is that both the inner and outer layers are made of cross-linked polyethylene. , the middle layer is all aluminum layer.
Aluminum-plastic composite pipes have low loss, can be cut at will, are easy to install, and are easy to construct. They have good thermal insulation properties. The inner and outer walls are not easy to corrode. Because the inner walls are smooth, they have little resistance to fluids and can be bent at will. The accessories are made of pure copper, which is expensive. The inner diameter of the copper parts is smaller than the inner diameter of the aluminum-plastic composite pipe, the flow rate is small, and if the installation is not good, it will easily leak when it expands with heat and contracts with cold.
4. Seamless copper tube
Copper tube, a kind of non-ferrous metal tube. Are pressed and drawn seamless tubes. High low temperature strength. Often used in the manufacture of heat exchange equipment (such as condensers, etc.). It is also used to assemble low-temperature pipelines in oxygen production equipment. Small-diameter copper pipes are often used to transport pressured liquids (such as lubrication systems, oil pressure systems, etc.) and pressure measuring tubes used as instruments. Copper pipes are strong and corrosion-resistant, making them the first choice for modern contractors to install water pipes, heating and cooling pipes in all residential commercial buildings.
5. Thin-walled stainless steel seamless pipe
Austenitic thin-walled stainless steel seamless pipes refer to stainless steel seamless pipes whose wall thickness to outer diameter ratio is not greater than 6%. After the chromium in the thin-walled stainless steel pipe reacts with oxygen and oxidants, it produces a passivation effect, forming a thin and tough dense passivation film Cr2O3 on the surface, which acts as a protective coating against corrosion.
Seamless steel pipes have excellent corrosion resistance, high strength and reliability. Seamless steel pipes have been widely used in the field of water supply and drainage.
Introduction to common building water supply and drainage pipes
1. Rigid polyvinyl chloride (PVC-U) water supply pipe
PVC-U pipes are made of sanitary grade polyvinyl chloride (PVC) resin as the main raw material, adding appropriate amounts of stabilizers, lubricants, fillers, color enhancers, etc., and are extruded and injection molded using a plastic PVC-U drainage pipe material extruder. Machine injection molding completes the production of pipes and fittings through cooling, solidification, shaping, inspection, packaging and other processes. It has excellent physical and chemical properties, chemical corrosion resistance, high impact strength, low fluid resistance, 30% higher flow rate than cast iron pipes of the same diameter, aging resistance, long service life, and a service life of not less than 50 years. It is an ideal material for building water supply and drainage. It is light, durable, easy to install, and effectively speeds up the project progress. Save construction costs. Compared with cast iron pipes of the same specifications, the construction costs can be greatly reduced.
2. Random copolymer polypropylene (PP-R) water supply pipe
PP-R pipe is also called type III polypropylene pipe. It is made of random copolymerized polypropylene, which is extruded into pipes and injection molded into pipe fittings. It is a new plastic pipe product developed and applied in Europe in the early 1990s. PP-R is a new generation pipe material that uses a gas phase copolymerization process to randomly and uniformly polymerize about 5% PE in the molecular chain of PP (random copolymerization) in the late 1980s. It has good impact resistance and long-term creep performance.
3. Aluminum-plastic composite water supply pipe
Aluminum-plastic composite pipe is the earliest water supply pipe to replace cast iron pipe. Its basic composition should be five layers, that is, plastic, hot melt adhesive, aluminum alloy, hot melt adhesive, and plastic from the inside to the outside. There are three main types of aluminum-plastic water supply pipes on the market: the first is that the inner and outer layers are made of polyethylene, the second is that the inner and outer layers are made of cross-linked polyethylene, and the third is that both the inner and outer layers are made of cross-linked polyethylene. , the middle layer is all aluminum layer.
Aluminum-plastic composite pipes have low loss, can be cut at will, are easy to install, and are easy to construct. They have good thermal insulation properties. The inner and outer walls are not easy to corrode. Because the inner walls are smooth, they have little resistance to fluids and can be bent at will. The accessories are made of pure copper, which is expensive. The inner diameter of the copper parts is smaller than the inner diameter of the aluminum-plastic composite pipe, the flow rate is small, and if the installation is not good, it will easily leak when it expands with heat and contracts with cold.
4. Seamless copper tube
Copper tube, a kind of non-ferrous metal tube. Are pressed and drawn seamless tubes. High low temperature strength. Often used in the manufacture of heat exchange equipment (such as condensers, etc.). It is also used to assemble low-temperature pipelines in oxygen production equipment. Small-diameter copper pipes are often used to transport pressured liquids (such as lubrication systems, oil pressure systems, etc.) and pressure measuring tubes used as instruments. Copper pipes are strong and corrosion-resistant, making them the first choice for modern contractors to install water pipes, heating and cooling pipes in all residential commercial buildings.
5. Thin-walled stainless steel seamless pipe
Austenitic thin-walled stainless steel seamless pipes refer to stainless steel seamless pipes whose wall thickness to outer diameter ratio is not greater than 6%. After the chromium in the thin-walled stainless steel pipe reacts with oxygen and oxidants, it produces a passivation effect, forming a thin and tough dense passivation film Cr2O3 on the surface, which acts as a protective coating against corrosion.
