PP pipe has the advantages of abrasion resistance, frost crack prevention, condensation prevention, simple installation and long service life. PP pipe is a kind of non-toxic, sanitary and recyclable pipe type. The use of PP pipe brings great convenience to people's life. PP pipe is mainly used in chemical industry, mining, electricity, pharmaceutical, environmental protection, petrochemical and sewage treatment. So, what are the characteristics of PP pipes? Which is the most widely used PE pipe or PP pipe? To help you answer your questions, let me explain the relevant knowledge of PP pipes in detail.
What are the characteristics of PP pipe
1. Non-rust: bear high concentration of acid and alkali corrosion with PH value ranging from 1 to 14 in a large temperature range.
2. Wear resistance and no scaling: the inner wall is uniform and smooth, the flow resistance is small, and there is no scaling.
3. Reduce vibration and noise: excellent sound insulation, reduce vibration and noise caused by liquid flow.
4. Anti-freezing crack: excellent elasticity, so that the section of pipes and pipe fittings will expand with the frozen liquid without cracking.
5. Anti-condensation and low heat loss: poor thermal conductor can reduce condensation and reduce heat loss.
6. Simple installation: light weight, convenient operation, and weldability.
7. Long service life: up to 50 years under specified service conditions.
PP pipe link method
There are two ways to connect PP pipes, 1. hot-melt connection 2. electrofusion connection. They are suitable for the connection of homogeneous PP pipes and pipe fittings. Among them, the cost of electrofusion connection is high.
There are two other connection methods: flange connection and screw connection. Flange connection, connection of flange pipe fittings and PP flange pipe sleeves, used for connection of large-diameter pipes; Screw thread connection, screw thread pipe fittings and pp pipe fittings with metal thread inserts, suitable for connection of small diameter pipes.
Which is the most widely used PE pipe or PP pipe
What is PE pipe:
PE, PE, with application range below 40 ℃, cannot be used for hot water transmission pipeline. PE pipe, high crystallinity, non-polar thermoplastic resin. It has the characteristics of most domestic and industrial chemicals.
What is PP pipe:
PP pipe, non-toxic, high-temperature resistant and recyclable, used for indoor hot and cold water supply system and heating system.
Difference between PE pipe and PP pipe:
The application scope of the two is different, PP is used for cold and hot water pipes, and also for central air-conditioning system; PE pipe, with relatively large diameter, is used for municipal water supply pipeline and gas supply pipeline
PP pipe can be used as cold and hot water pipe, with working temperature of 60~70 ℃ and instantaneous temperature of 95 ℃. It is used for indoor cold and hot water transmission. It is required to be installed in a concealed way. It is connected by hot melting socket and special socket welding machine
PE is polyethylene; The operating temperature is not more than 45 ℃, and the caliber is DN1100. It is currently used in the fields of gas transmission and distribution, municipal water supply, indoor cold water transmission, sewage, etc., with a good prospect, and is a leader in pipeline materials. It is currently used in the same layer of drainage HDPE pipes
The raw materials are extracted from petroleum, but PP is extracted from PE, so PP is more expensive. PP pipes are used for cold and hot water supply, while PE pipes are used for water supply in villages.