There are many kinds of plastic pipes, such as PVC, PE, PP, ABS, CPVC, PVDF, etc. Well-known pipe companies include Baidie, Sorbonne-Pilsa, Gaofeng, AD, Rifeng, Jinniujiao, Weixing, Liansu. , Jinde, Asia-Pacific, Xiongsu, D&G, etc. This article is about the general chemical properties and main applications of plastic pipes for everyone.

    1. Polyvinyl chloride (PVC) pipe

    Resistant to most acids, bases, and salt solutions. However, its chemical properties are easily destroyed by substances such as aromatic hydrocarbons, hydrocarbons, ketones, esters and chlorinated hydrocarbons. PVC pipes are mainly used for urban water supply, urban drainage, building water supply and building drainage pipes, and are also widely used for water-saving irrigation pipes. Reply to "Tube" and find out more related articles

    2. Chlorinated polyvinyl chloride (CPVC) pipe

    Corrosion resistance is almost the same as that of rigid polyvinyl chloride. It has higher heat resistance than polyvinyl chloride and can withstand high temperatures of 90 °C. It is mostly used as hot water pipe, waste liquid pipe and sewage pipe, and is widely used in power cable sheathing pipes in China. Long-term working temperature: 90 ° C, short-term working temperature: 110 ° C.

    3. Polyvinylidene fluoride (PVDF) pipe

    PVDF tube (polyvinylidene fluoride tube), translucent, densely packed between molecular chains, with strong hydrogen bonding, oxygen index of 46%, natural flame resistance, crystallinity of 65%~78%, density of 1.75-1.78g/ Cm3, long-term use temperature -40 ~ 150 °C. Its outstanding features are high mechanical strength, good radiation resistance, long-term outdoor use, no maintenance. It has good chemical stability and is not corroded by acid, alkali, strong oxidant and halogen at room temperature. It is widely used in petrochemical, electrical and electronic, steel pickling, acid and alkali transportation. Long-term working temperature: 140 ° C, short-term working temperature: 150 ° C.

    4. Polypropylene (PP) pipe

    A strong acid such as a mixture of concentrated nitric acid and chromic acid has unstable chemical properties, but its chemical properties are relatively stable for its acids, bases and salts. It is resistant to organic solvents (except solvents for active groups). Long-term working temperature: 90 ° C, short-term working temperature: 110 ° C. It is mainly used in indoor and outdoor hot and cold water supply systems for buildings. It is also widely used in heating systems to restore “pipes”. For more related articles.

    5. Acrylonitrile • Butadiene • Styrene (ABS) pipe

    Resistant to alkalis, dilute organic mineral acids, aliphatic hydrocarbons (except petroleum spirits), most oils and fats. Aromatic compounds, ketones, ethers, hydrazines and chlorinated hydrocarbons (except perchloroethylene) destroy its chemical resistance. The service life of ABS plastic pipe is quite long. If it is buried in the ground or the water will last longer, ABS plastic pipe can be used in the pharmaceutical and food industries, without changing the water quality, and will not form secondary pollution.

    6. Polytetrafluoroethylene (PTFE) pipe

    It is resistant to common acids and bases and does not dissolve or change its properties in common solvent solutions. The molten alkali metal and high temperature, chlorine and chlorine trifluoride can destroy its chemical properties. Long-term use temperature: 250 ° C, short-term use temperature 300 ° C. It can be applied to corrosive fluid medium pipes and the like.

    7. Polyethylene (PE) pipe

    PE pipe is non-toxic, does not contain heavy metal additives, does not scale, does not breed bacteria, can resist corrosion of various chemical media: no electrochemical corrosion, widely used in building water supply, building drainage, buried drainage pipe, building heating, Gas transmission and distribution, gas pipelines, electrical and telecommunications protection casings, industrial pipes, agricultural pipes, etc. It is mainly used in urban water supply, city gas supply and farmland irrigation.

    8. Fluorinated rubber

    It has the best chemical resistance of all rubber products. It is very resistant to strong oxidizing acids like concentrated sulfuric acid and concentrated nitric acid. It is resistant to aliphatic and aromatic substances and oils, but substances such as ketones, ammonia, and caustic soda can destroy its chemical properties. Long-term use temperature: 150 ° C, short-term use temperature: 200 ° C.

    9. Chloroprene rubber pipe

    Chemical resistance is very similar to PVC, between eye and butyl rubber. Long-term use temperature: 80 ° C, short-term use temperature: 110 ° C.

    10. Eye base butadiene rubber (butyl rubber) pipe

    It is very resistant to oil and gasoline, but it is not suitable for oxidizing media. Long-term use temperature: 90 ° C, short-term use temperature: 120 ° C