Different shapes of pipe fittings and processing techniques affect the use of pipe fittings. Different pipe fittings have different uses. Here are the uses of various stainless steel pipe fittings.

1.Sanitary Valve

Production and fire-fighting water supply pipes, drainage branches for sanitary appliances and non-corrosive production drainage branches for production equipment, and rainwater pipes for industrial plants.

Advantages: high strength, convenient interface, high internal pressure, smooth inner surface, good hydraulic conditions

Disadvantages: easy to corrode, high cost

2. Steel-lined plastic composite pipe

Not only can it be used for water supply, but also can transport corrosive liquids;

S/PP applicable temperature: -25～ +100℃

S/PE applicable temperature: -25～+70℃

S/PVC applicable temperature: -25～+65℃

Advantages: a high-performance anti-corrosion pipeline with strong corrosion resistance and wear resistance, as well as good strength and anti-aging performance

Disadvantages: thick pipe wall, limited bearing pressure, processing and installation have certain special requirements, special pipe fittings threaded connection, flange connection

3. Galvanized steel pipe (hot dip)

The pipe diameter is less than or equal to 150mm fire protection system and production water supply pipeline

Advantages: high strength, convenient interface, high internal pressure, smooth inner surface, good hydraulic conditions

Disadvantages: easy to corrode, high cost, threaded connection, flange connection

3. Bimetallic stainless steel welded pipe

Specially suitable for domestic hot and cold water pipes

Advantages: hygienic and non-toxic, heat-resistant and pressure-resistant, easy to install, small pipeline resistance, good mechanical properties, large pipeline direct range

Disadvantages: complex welding process, inner and outer composite layers should not be damaged, otherwise the zinc pipe effect will appear

Special welding, flange connection, threaded connection in the form of coupling, accessory connection

4. Stainless steel pipe

Transport pure water, corrosive production sewage

Advantages: beautiful appearance, corrosion resistance, impermeability, good airtightness, smooth inner wall, light weight, easy installation, high pressure resistance, vibration resistance

Disadvantages: difficult to construct, expensive. Compression type, compression type, push-on type (flexible type), taper thread type, quick-connect flange type, flange type, screw type, socket type

5. Stainless steel lined plastic thick-walled stainless steel pipe,

Specially suitable for domestic hot and cold water pipes

Advantages: beautiful appearance, corrosion resistance, impermeability, good airtight parts, smooth inner wall, light weight, easy installation, high pressure resistance

Disadvantages: high price of stainless steel materials

Grooved ferrule type, sealed bonding type, etc.

6. Steel pipe (copper, brass)

Hot water pipe

Advantages: good corrosion resistance to fresh water, high mechanical strength, strong flexibility resistance, easy processing, smooth inner surface, not easy Scale formation, beautiful

Disadvantages: thin pipe wall, easy to damage

Threaded connection, flange connection, welding, special pipe fittings

7. Aluminum alloy lined plastic composite pipe

Specially suitable for domestic hot and cold water pipes

Advantages: beautiful appearance, heat preservation, corrosion resistance, impermeability, good air tightness, smooth inner wall, light weight, easy installation

Disadvantages: The outer layer is afraid of acid and alkali corrosion, and the pipe fittings are external joints, which are not conducive to concealed installation

Special ferrule and flange connection

8. Non-metallic pipe

Rubber pipe

Advantages: mobility, temporary pipeline

Corrosion resistance, vibration resistance, noise prevention, convenient interface

Disadvantages: large water flow resistance, low pressure resistance

Flange connection 9. Concrete pipe, reinforced concrete pipe

Large and medium-sized outdoor water supply pipelines

Advantages: cheap price, good corrosion resistance after treatment

Disadvantages: heavy weight, difficult construction, and easy damage to accessories

Concrete pipes use rubber rings and smear tape interfaces, and reinforced concrete pipes use rubber ring interfaces

10. Glass fiber reinforced plastic pipe

More suitable for large and medium-sized outdoor water supply pipelines with strong geological corrosion

Advantages: thermal insulation, corrosion resistance, smooth inner wall

Disadvantages: high interface requirements, easy to leak, difficult to construct, expensive

Double socket sleeve joint connection, socket joint connection, flange, flexible steel joint, mechanical steel joint or multi-functional flexible joint

11. Aluminum-plastic composite pipe

Used for domestic cold and hot water pipes. The inner and outer plastic layers are made of cross-linked polyethylene composite pipes, which can be used for hot water pipes, and the working temperature can reach 90℃

Advantages: pipes with certain flexibility, heat preservation, corrosion resistance, impermeability, good air tightness, smooth inner wall, light weight, easy installation

Disadvantages: limited strength, easy to damage, more support and fixation, limited aesthetics, uneven thickness of pipe wall

Aluminum alloy self-locking sealing pipe fittings. When using a plastic sealing sleeve, the water temperature does not exceed 60℃; when using an aluminum sealing sleeve, the water temperature does not exceed 100℃

12. Water supply UPVC

Applicable to domestic oil casing water supply (cold)

Advantages: corrosion resistance, smooth inner wall, not easy to scale and block, good hydraulic conditions, light weight and easy installation, not easy to age in the sun, low heat resistance, high construction technology and conditions

Hard texture, cheap, easy to bond, flame retardant

Disadvantages: not impact-resistant, poor durability, high requirements for joint bonding technology, long curing time

Socket bonding, plastic welding, special accessories flange connection, threaded connection

13.HDPE

Advantages: good toughness, good fatigue strength, good milk temperature performance, good flexibility and impact resistance

Disadvantages: welding requires electricity, mechanical connection parts are large and flammable

Electric hot melt, hot melt butt welding and hot melt socket connection, threaded connection, flange connection, welding of special accessories, etc.

14.ABS

Advantages: high strength, impact resistance, can be directly threaded, good hygiene performance, suitable for pure water transportation

Disadvantages: long bonding and curing time, flammable

Mainly socket connection, flange connection of special accessories, threaded connection

15.PP-R

Applicable to domestic (cold) hot water

Advantages: good temperature resistance, recyclable, green and environmentally friendly products, good hygiene performance, suitable for Pure water transportation

Disadvantages: Under the same pressure and medium temperature, the pipe wall is thick and flammable

Mainly electric hot melt, hot melt butt joint, and flange connection and threaded connection of special accessories

16.PP-C

Advantages: Good temperature resistance, good sanitation, suitable for pure water transportation

Expensive

17.PEX

Advantages: Good temperature resistance, good creep resistance, good memory, easy to correct. Only metal parts can be connected, and cannot be recycled and reused. Special metal connectors are sleeve type, clamp type connection and threaded connection

18.CPVC

Advantages of seamless steel pipe: Best temperature resistance, good anti-aging performance, good flame retardant

High price, only suitable for hot water system

Socket bonding, plastic welding, flange connection and threaded connection of special accessories

19.PB

Good temperature resistance, good tensile and compressive strength, impact resistance, low creep, high flexibility, Under the same pressure and medium temperature, the pipe wall The thinnest is a green product. There is no PB resin raw material in China. It is imported, expensive and flammable. There are mainly electric hot melt and hot melt butt joint. Rubber ring sealing butt joint can also be used.

20.PPPE pipe

It is more suitable for indoor water supply such as residential and public buildings.

It has a wide temperature range and high pressure resistance. Under the same pressure bearing conditions, the pipe wall is small and the price is low. It is connected with valves, faucets and water meters, etc. to handle metal inserts. The variety specifications and output are limited. Hot melt connection, thread connection

21.Nano polypropylene pipe (NPP-R)

It is especially suitable for drinking water pipe water supply projects

Advantages: corrosion resistance, easy installation, smooth inner wall, not easy to accumulate scale and blockage, light weight, direct concealed laying, 100% sterilization function, dense and impact resistant, green product. High cost, limited output. Hot melt plug-in, special accessories thread