What is TPEP anti-corrosion steel pipe?
Release time:
2022-09-07
TPEP anti-corrosion steel pipe, also known as coated pipe, steel-composite pipe, or coated composite steel pipe, features an outer wall made by a hot-adhesive wrapping process that forms a three-layer anti-corrosion coating consisting of an underlying epoxy powder, an intermediate adhesive layer, and an outer polyethylene layer. The inner wall is protected by a hot-sprayed epoxy powder coating. After the steel pipe is heated to high temperatures, the powder is evenly applied to the pipe’s surface. As a result, this coating combines the advantages of both epoxy powder (FBE) coatings and polyethylene coatings. It can be widely used in various anti-corrosion engineering applications.
TPEP Anti-corrosion steel pipes, also known as coated pipes, steel-composite pipes, or coated composite steel pipes, feature a three-layer anti-corrosion coating. The outer wall of TPEP anti-corrosion steel pipes is manufactured using a hot-adhesive wrapping process, forming a three-layer coating consisting of an inner epoxy powder layer, an intermediate adhesive layer, and an outer polyethylene layer. The inner wall is protected by a hot-sprayed epoxy powder coating. After the steel pipe is heated to high temperatures, the powder is evenly applied to the pipe surface. As a result, this coating combines the advantages of both epoxy powder (FBE) coatings and polyethylene coatings. It can be widely used in various anti-corrosion engineering applications.
TPEP anti-corrosion steel pipe is a new type of steel-plastic composite pipe composed of a steel pipe substrate, an epoxy resin inner coating, and a polyethylene outer coating. It boasts excellent mechanical properties, corrosion resistance, and aging resistance. It is widely used in numerous industries, including water conservancy, power generation, chemical engineering, and petroleum.
TPEP anti-corrosion steel pipe is a new type of steel-plastic composite pipe composed of a steel pipe substrate, an epoxy resin inner coating, and a polyethylene outer coating. It boasts excellent mechanical properties, corrosion resistance, and aging resistance. It is widely used in numerous industries including water conservancy, power generation, chemical engineering, and petroleum. Internally and externally polyethylene-coated anti-corrosion steel pipes are categorized into the following types: internal fusion epoxy powder with single-layer external polyethylene anti-corrosion steel pipe; internal liquid epoxy powder with single-layer external polyethylene anti-corrosion steel pipe; internal fusion epoxy powder with three-layer external polyethylene (3PE) anti-corrosion steel pipe; and internal liquid epoxy (IPN8710) with three-layer external polyethylene anti-corrosion steel pipe.
Advantages of TPEP anti-corrosion steel pipes:
1. TPEP steel pipes are expensive but have low roughness. Under the same flow rate, the diameter of TPEP steel pipes required is smaller than that of ductile iron pipes. For example, in this project, the ductile iron pipe needs to be DN1200mm with a price of 2,200 yuan per meter; whereas the TPEP steel pipe only requires DN1000mm and costs 1,920 yuan per meter. Thus, TPEP steel pipes are cheaper than ductile iron pipes.
2. TPEP steel pipes are different from E-coated steel pipes. They undergo both internal and external anti-corrosion treatments, and the anti-corrosion coating is harmless to drinking water.
3. TPEP steel pipes have stronger resistance to water hammer than ductile iron pipes.
4. The basic requirements for the two types of pipelines are essentially the same.
5. In terms of construction, welding TPEP steel pipes requires high technical expertise and results in a slow construction schedule; joining ductile iron pipes, while seemingly easier technically, allows for faster construction progress but necessitates more bridge piers.
6. Under the same operating conditions, the diameter of TPEP steel pipes is one size smaller than that of ductile iron pipes, resulting in a corresponding reduction in earthwork excavation volume for the pipe trenches, temporary land occupation, pipe fitting dimensions, and green space requirements. After comprehensively considering cost-effectiveness and construction difficulty, this water supply unit has selected TPEP steel pipes (with an external 3PE coating and internal fusion-bonded epoxy coating) as the pipe material for diameters greater than DN800.
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