Five common water supply pipe fitting materials and their characteristics

First, PVC-U pipe: five common water supply pipe fittings materials and their characteristics

PE water supply pipe fittings are made of health-grade PVC resin as the main raw material, adding appropriate amounts of stabilizers, lubricants, fillers, colouring agents, etc., through the plastic extruder extrusion, injection moulding machine injection moulding and become. The production of pipes and fittings is completed through cooling, curing, shaping, inspection, packaging and other processes.

PVC-U pipes have the advantages of light weight, corrosion resistance, low flow resistance, energy saving, fast installation and low cost.

Scope of application: urban water supply and water supply projects, water supply projects inside and outside the building, industrial and mining enterprises water supply projects, buried fire water supply projects, agricultural water conservancy water supply and irrigation projects, landscaping water supply and drainage projects, aquaculture water supply and drainage projects, and so on.

Second, random polypropylene (PP-R) water supply pipe:

PP-R pipe is also known as three types of polypropylene pipe. The use of random copolymer polypropylene extrusion into a pipe, injection into a pipe. Has good impact resistance and long-term creep performance.

Advantages of PPR pipe: affordable, stable performance, heat preservation, corrosion resistance, smooth inner wall without scaling, safe and reliable piping system, no penetration, service life of up to 50 years. Known as ‘never scale, never rust, never leakage, green high-grade water supply material’ reputation.

Disadvantages of PPR pipe: high technical requirements for construction, need special tools and professionals to ensure the safety of the system.

PPR pipe application:

1, building hot and cold water system, including central heating system;

2、Heating systems in buildings, including floor, wall plate and radiant heating systems;

3, Direct drinking pure water supply system;

4, Central (central) air-conditioning systems;

5, chemical media and other industrial piping systems for transport or discharge.

Third, aluminium-plastic composite water supply pipe:

Aluminium-plastic composite pipe is the to appear can replace the cast iron pipe water supply pipe fittings. Its basic composition should be five layers, namely, plastic, hot melt adhesive, aluminium alloy, hot melt adhesive and plastic from inside to outside.

Aluminium-plastic composite pipe insulation performance is good, the inner and outer walls are not easy to corrosion, because the inner wall is smooth, the resistance to the fluid is very small, and can be bent at will, installation and construction is convenient.

There are mainly three kinds of aluminium-plastic water supply pipes on the market:

1, polyethylene / aluminium / polyethylene (polyethylene / aluminium / polyethylene)

2, polyethylene / aluminium / polyethylene (polyethylene / aluminium / cross-linked polyethylene)

3, PEX / AL / PEX (cross-linked polyethylene / aluminium / cross-linked polyethylene)

Firstly, the inner and outer layers are polyethylene, secondly, the inner layer is cross-linked polyethylene and the outer layer is polyethylene, thirdly, the inner and outer layers are cross-linked polyethylene and the middle layer is aluminium. The former type is usually used for cold water piping systems, and the latter two are usually used for hot water piping.

Four, copper pipe

Also known as copper pipe. A kind of non-ferrous metal pipe is stamping seamless steel pipe.

Advantages: copper pipe is hard, not easy to corrode, high temperatures and high pressure. This is relatively good water supply pipe.

Disadvantages: high price.

Five, thin-walled stainless steel pipe

Stainless steel belt or stainless steel plate, wall thickness 0.6-2.0 mm, made of automatic argon arc welding and other fusion welding process.

Stainless steel water pipe due to its safety and hygiene, high strength, good corrosion resistance, good durability, long life, maintenance-free, beautiful and other characteristics, the development momentum is strong, has been widely used in building water supply and direct drinking water pipeline.

(Lightweight stainless steel pipe) has the following outstanding advantages: desirable mechanical properties, desirable abrasion resistance, good safety and hygiene performance, temperature resistance, good thermal insulation performance, smooth inner wall, water resistance is small; beautiful appearance, clean and stylish, recyclable; conducive to water conservation, a wide range of uses, long service life, low comprehensive cost.