1, PPR pipe
Applicable conditions: as a new type of water pipe material, PPR pipe has unique advantages, health and non-toxic, can be used as cold water pipe, can also be used for hot water pipe.
Connection mode: connector connection or hot-melt connection
Advantages: moderate price, stable performance, heat preservation, corrosion resistance, smooth inner wall no fouling, safe and reliable pipeline system, and no penetration, service life of up to 50 years.
Disadvantages: But the connection requires special tools, the connection surface needs to be heated, the heating time is too long or the socket insert too much will cause water flow blockage.
2, copper pipe
Applicable conditions: copper tube is hard, not easy to corrosion, and high temperature resistance, high pressure resistance, can be used in a variety of environments
Connection: Clamping and welding
Advantages: high strength, stable performance, sterilization, and not easy to corrosion.
Disadvantages: high price, difficult construction, in the cold winter, easy to cause heat loss, energy consumption, the use of high cost.
3, aluminum plastic pipe
Applicable conditions: aluminum-plastic pipe was a more popular pipe on the market, because of its light, durable and convenient construction, its flexibility is more suitable for use in home improvement.
Connection mode: mainly mechanical connection
Advantages: the price is relatively cheap, can be arbitrary bending, smooth surface, convenient construction.
Disadvantages: easy aging, use more hidden trouble, short service life, practice has proved that its pipeline connection is prone to leakage.
4, galvanized pipe
Applicable conditions: galvanized pipe is widely used, in addition to water, gas, oil and other general low pressure fluid pipeline pipe, It is also used as oil well pipe and oil pipe in petroleum industry, especially in offshore oil field, oil heater, condensing cooler of chemical coking equipment, coal distillation wash oil exchanger pipe, as well as trestle pipe pile, support pipe of mine tunnel, etc.
Connection: thread connection, thread flange connection, groove clamp connection
Do not use the water pipe for a long time, you suddenly open it unexpectedly found that the outflow is “yellow” water, the old house before the galvanized iron pipes are prone to such a thing, such a “yellow water on the human body is also harmful. From 2000 to ban galvanized pipe, the new residential cold water pipe has rarely used galvanized pipe.
Advantages: complete varieties, pipe fittings and more.
Disadvantage: belong to the country banned the use of obsolete products, easy corrosion and rust, resulting in poor water flow, easy to cause water pollution.
5, PVC pipe
Applicable conditions: in fact, is a plastic pipe, because of its frost resistance and heat resistance are not good, it is difficult to use as a hot water pipe; Strength does not apply to the water pipe pressure requirements, so cold water pipe is rarely used. In most cases, PVC pipe is suitable for electrical and sewage pipes. In addition, make PVC become more soft chemical additives phthalein, on the human body kidney, liver, testicle impact is great, can lead to cancer, kidney damage, it is not recommended to buy.
Connection mode: the interface is generally glued
Advantages: light weight, easy to install, low cost, and not easy to corrupt.
Disadvantages: poor quality will be very brittle, easy to fracture, heat is also easy to deformation.
6, thin wall stainless steel pipe
Applicable conditions: thin-walled stainless steel pipe corrosion resistance is not easy to rust, safe and reliable use of strong impact resistance, thermal conductivity is relatively low. But the price of stainless steel pipe is relatively high, in addition to the choice should be used in the choice of water chlorine water chloride ion stainless steel models
Connection mode: welding, thread, sealing pressure and so on.
Advantages: not easy oxidation rust, strong impact, low heat conduction.
Disadvantages: High cost, should be resistant to water chloride ion stainless steel models.
7, lined PVC galvanized steel pipe
Applicable conditions: PVC lined galvanized steel pipe has the advantages of high strength, good rigidity of metal pipe and corrosion resistance of plastic pipe, and also overcomes the shortcomings of two kinds of materials.
Connection mode: the inner rib embedded plastic lining steel pipe is deformed into a small circular arc groove at a certain distance from the end of the pipe by using the cold extrusion principle. The stainless steel clasp with the spring type is put into the groove, the nut or the rigid expansion interface, the new-type enamel pipe fittings and their accessories are sheathed on the sleeve, and the installation is quick and tight.
Advantages: pipe fittings, complete specifications.
Disadvantages: the actual use of pipe diameter smaller; When the ambient temperature and medium temperature change is large, it is easy to produce separation and lead to pipe quality decline.
