1. Ordinary steel pipe
Production and fire water supply pipes, sanitary ware drainage branch pipes and non-corrosive production drainage branch pipes of production equipment, industrial plant rainwater pipes.
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 be used for water supply, but also can transport corrosive liquid;
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, which has strong corrosion and wear resistance, good strength and anti-aging performance
Disadvantages: the pipe wall is thicker, the bearing pressure is limited, there are certain special requirements for processing and installation, and special pipe fittings are threaded and flanged.
3. Galvanized steel pipe (hot dipped)
Fire protection system and production water supply pipeline with pipe diameter less than and equal to 150mm
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. Bimetal composite pipe
There are specially suitable for domestic cold and hot water pipes
Advantages: hygienic and non-toxic, heat and pressure resistant, easy to install, small pipeline resistance, good mechanical properties, large direct pipeline range
Disadvantages: The welding process is complicated, and the inner and outer composite layers should not be damaged, otherwise the zinc pipe effect will appear
Special welding, flanged connections, threaded connections in the form of couplings, fitting connections
4. Stainless steel pipe
Transport pure water, corrosive production sewage
Advantages: beautiful appearance, corrosion resistance, impermeability, good airtight parts, smooth inner wall, light weight, easy installation, high pressure resistance, vibration resistance
Disadvantages: not easy to construct, expensive. Compression type, compression type, push type (flexible type), taper thread type, quick connection flange type, flange type, screw connection type, socket type
5. Stainless steel lined plastic composite pipe
There are specially suitable for domestic cold and hot 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
Groove ferrule type, sealed bonded type, etc.
6. Steel pipe (copper, brass)
hot water pipe
Advantages: good corrosion resistance to fresh water, high mechanical strength, strong flexibility, easy processing, smooth inner surface, not easy to scale, beautiful
Disadvantages: thin tube wall, easy to damage
Threaded connection, flanged connection, welding, special fittings
7. Aluminum alloy lined plastic composite pipe
There are specially suitable for domestic cold and hot 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 is not conducive to concealed installation
Special ferrule type, flange type connection
8. Non-metallic pipe
rubber tube
Pros: Mobility, temporary pipeline
Corrosion resistance, vibration resistance, noise resistance, convenient interface
Disadvantages: large water flow resistance, low pressure resistance
Flange connection, cable tie 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 adopt apron and wiper tape joints, and reinforced concrete pipes adopt apron joints
10. Glass steel pipe
More suitable for large and medium-sized outdoor water supply pipelines with strong geological corrosion
Advantages: heat preservation, corrosion resistance, smooth inner wall
Disadvantages: high interface requirements, easy to leak, difficult to construct, expensive
Double socket socket joint connection, socket joint connection, flange, flexible steel joint, mechanical steel joint or multi-purpose union joint
11. Aluminum-plastic composite pipe
Used for domestic cold and hot water pipes. The inner and outer plastic layers are composite pipes made of cross-linked polyethylene, which can be used for hot water pipes, and the working temperature can reach 90°C
Advantages: flexible pipe, heat preservation, corrosion resistance, impermeability, good air tightness, smooth inner wall, light weight, easy installation
Disadvantages: limited strength, easy to damage, more fixed supports, 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°C; when using an aluminum sealing sleeve, the water temperature does not exceed 100°C
12. Water supply UPVC
Suitable for domestic water supply (cold)
Advantages: corrosion resistance, smooth inner wall, not easy to scale and block, good hydraulic conditions, light weight, easy installation, not easy to age in the sun, low heat resistance, high construction technology and condition requirements
Hard texture, cheap, easy to bond, flame retardant
Disadvantages: no impact resistance, poor durability, high technical requirements for joint bonding, long curing time
Socket bonding, plastic welding, special fittings flange connection, screw connection
13.HDPE
Advantages: good toughness, good fatigue strength, good milk temperature performance, good flexibility and impact resistance
Disadvantages: welding requires electricity, mechanical connection is large, flammable
Electric heat fusion, heat fusion butt welding and heat fusion socket connection, screw connection, flange connection, welding, etc. of special accessories
14.ABS
Advantages: high strength, impact resistance, direct threading, good hygienic performance, suitable for pure water transportation
Disadvantages: long bonding and curing time, flammable
There are mainly socket connections, as well as flange connections and thread connections for special accessories.
15.PP-R
Suitable for domestic (cold) hot water
Advantages: Good temperature resistance, recyclable, green and environmental protection products, good hygienic performance, suitable for pure water transportation
Disadvantages: under the same pressure and medium temperature, the pipe wall is thick and flammable
There are mainly electric hot melt, hot melt butt joints, as well as flange connections and threaded connections for special accessories.
16.PP-C
Advantages: good temperature resistance, good hygienic performance, suitable for pure water transportation
more expensive
17. PEX
Advantages: Good temperature resistance, good creep resistance, good memory, easy to correct Can only be connected with metal parts, can not be recycled and reused Special metal connectors are ferrule-type, clamp-type connection and threaded connection
18. CPVC
Advantages: the best temperature resistance, good anti-aging performance, good flame retardant performance
Expensive, only suitable for hot water systems
Socket bonding, plastic welding, flange connections for special fittings, threaded connections
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 is the thinnest and is a green product. There is no PB resin raw material in China, and it depends on imports. , high price, flammable mainly include electric hot melt, hot melt butt joint, rubber ring seal butt joint can also be used
20.PPPE pipe
More suitable for indoor water supply in residential and public buildings
Wide temperature range, high pressure resistance, under the same pressure bearing conditions, small pipe wall, low price, connected with valves, faucets and water meters, etc. to deal with pipe fittings with metal inserts Variety specifications, limited output Hot melt connection, threaded connection
21. Nano polypropylene tube (NPP-R)
Especially suitable for drinking water pipe water delivery projects
Advantages: corrosion resistance, easy installation, smooth inner wall, not easy to build up and block, light weight and direct concealed laying, 100% sterilization function, dense quality and impact resistance, green products High cost, limited output Hot melt plug, special accessory wire
