Steel-polyvinyl chloride (PVC) composite pipe, Steel-polyethylene composite pipe
1. Performance:
① Working Pressure of Medium: Positive Pressure 1.6 MPa, Negative Pressure 96 KPa
② Operating Temperature of Medium: -15℃ to +70℃
③ Corrosion Resistance: Resists corrosion from acids, alkalis, salts, gases, and water below 60°C, including sulfuric acid at concentrations below 75%, nitric acid below 50%, phosphoric acid below 90%, acetic acid below 20%, and hydrochloric acid, hydrofluoric acid, sulfurous acid, carbonic acid, boric acid, silicic acid, hypochlorous acid, oleic acid, citric acid, various alkalis, the vast majority of salts, and N2, S(gas), Hg(vapor), air, H2, CO, CO2, natural gas, coal gas, and other gases. However, it is still corroded by concentrated nitric acid, fuming sulfuric acid, anhydride, ketones, ethers, halogenated hydrocarbons, aromatic amines, etc.
2. Usage:
Used in conjunction with steel-plastic fittings, suitable for conveying corrosive fluids and gases, replacing stainless steel pipes, lined rubber pipes, glass-lined pipes, and other precious metal tube materials.

2. Steel-PP Composite Pipe
Performance
① Medium Working Pressure: Positive Pressure 1.6 MPa, Negative Pressure 96 KPa
② Medium Operating Temperature: -15℃ to +110℃
③ Corrosion Resistance: The material exhibits good corrosion resistance against most organic and inorganic acids, alkalis, and salts, withstanding stress corrosion, except for strong oxidizing acids such as concentrated nitric acid, fuming sulfuric acid, and chlorosulfonic acid. Below 100℃ temperature, the corrosion resistance can be referred to in the "Corrosion Data Manual."
2. Application:
Used in conjunction with steel-plastic pipe fittings, it can serve as a conveying pipeline for enterprises in the beverage, food, water treatment industries, etc., which require a certain purity and non-contamination of the medium, as well as resistance to corrosion from various acids, bases, salts, and other corrosive substances.

Three. PTFE Coated Steel Pipe
Tight-fitting polytetrafluoroethylene tubes, thickness of 2-5mm.
1. Performance
①Medium Working Pressure: Positive Pressure 1.6 MPa, Negative Pressure 96 KPa
②Operating Temperature of Medium: -180℃ to +260℃
③ Corrosion Resistance: Resists corrosion from almost all chemical mediums except fluorides, and does not age.



Section 4: Specifications of Steel-Plastic Composite Pipes
1. Steel-plastic composite pipe structure diagram
2. Flanges are manufactured according to national standards and customer requirements, with composite pipe lengths customizable to any specified size.

Section 5: Steel and Plastic Pipe Fittings
Steel-plastic pipe fittings include elbows, tees, crosses, and reducers, etc., which are lined with materials of the same composition as the steel-plastic composite pipes and come in corresponding sizes. Used in conjunction with pipes, they offer the same corrosion resistance as the pipes and feature interchangeability and versatility.
Our factory's steel-plastic composite pipe fittings are made with a full steel shell and internally feature a plastic integral injection molding, with no plastic welding seams.