Steel plastic composite pipes and fittings

1. Steel and polyvinyl chloride or polyethylene composite pipes and pipe fittings
a. Medium working pressure: positive pressure 1.6Mpa, negative pressure 0.096Mpa at room temperature
b. Medium working temperature: -15 ℃~+70 ℃
c. Corrosion resistance: It can withstand sulfuric acid with a concentration of 75% or less, nitric acid with a concentration of 50% or less, phosphoric acid with a concentration of 90% or less, acetic acid with a concentration of 20% or less, and any concentration of hydrochloric acid, hydrofluoric acid, sulfurous acid, carbonic acid, boric acid, silicic acid, hypochlorous acid, oleic acid, citric acid, various bases and the vast majority of salts, as well as N2, S, NH3, CO, CO2, gases, natural gas, coal gas Hg vapor, air and other gases below 60 ℃. However, it is not resistant to strong oxidants such as concentrated nitric acid and fuming sulfuric acid, as well as acetic anhydride, ketones, ethers, halogenated hydrocarbons, aromatic amines, etc.
2. Steel and polypropylene composite pipes and pipe fittings
a. Medium working pressure: positive pressure 1.6Mpa, negative pressure 0.096Mpa at room temperature
b. Medium working temperature: -15 ℃~+110 ℃
c. Corrosion resistance: In addition to strong oxidizing acids such as concentrated nitric acid, smokeless sulfuric acid, and chlorosulfonic acid, it can withstand most organic and inorganic acids, bases, and salts. It has good resistance to stress corrosion and can corrode with nitric acid, formic acid, acetic acid below 10%, hydrochloric acid below 30%, hydrofluoric acid below 20%, various concentrations of carbonic acid, boric acid, butyric acid, bases, and the vast majority of salts, as well as gases such as Hg (vapor) NH3, CO2, NO2, HCl, etc.
3. Steel and polytetrafluoroethylene or perfluoroethylene propylene composite pipes and fittings
a. Medium working pressure: positive pressure 1.6Mpa, negative pressure 0.096Mpa at room temperature Main technical performance
b. Medium working temperature: F4 is -100 ℃~+260 ℃, F46 is -80 ℃~+205 ℃
c. Corrosion resistance: Except for molten metal lithium, potassium, sodium, chlorine trifluoride, high temperature oxygen trichloride, and high flow rate liquid fluorine, it can resist corrosion from almost all chemical media and will not age.
4. Steel and polyvinylidene fluoride or other fluorine based composite pipes and fittings.
a. Medium working pressure: positive pressure 1.6Mpa, negative pressure 0.096Mpa at room temperature
b. Medium working temperature: -40 ℃~+160 ℃
c. Corrosion resistance: In addition to strong oxidants such as fuming sulfuric acid, concentrated hot sulfuric acid, nitric acid, and ketones, esters, amines below 90 ℃, as well as high-temperature sulfonating agents, it can withstand corrosion from most organic and inorganic acids, oxidizing media, aliphatic carbides, alcohols, and halogen solutions.