TPEP Anti-Corrosion Steel Pipe
Excellent Anti-Corrosion Solution for Modern Pipeline Engineering
Core Product Features and Technological Innovation
TPEP anti-corrosion steel pipes achieve comprehensive upgrades in anti-corrosion performance through composite technology of outer wall three-layer polyethylene (3PE) and inner wall fusion-bonded epoxy resin (FBE). Compared to traditional single-layer anti-corrosion pipe materials, their anti-corrosion lifespan is improved by 3-5 times, demonstrating excellent performance in harsh environments such as high salinity and humidity. Using fourth-generation thermal fusion wrapping technology, they form steel-plastic alloy layers that combine impact resistance and chemical inertness.
Technical Parameters and Process Advantages
Structural Design
- External Anti-corrosion Layer (3PE): Total thickness ≥4.2mm, compliant with GB/T23257-2009 standard.
- Internal Anti-corrosion Layer (FBE): Food-grade epoxy powder, thickness ≥450μm, certified to CJ/T120-2008.
- Hydraulic Characteristics: Roughness as low as 0.0081, reducing pump station energy consumption by 15%.
Production Process
- Medium Frequency Heating Technology: Base pipe preheating 200-220℃, bonding strength ≥50MPa.
- Repair-free Connection: DN600 and below use stainless steel lined ports to simplify construction.
Application Scenarios and Engineering Cases
Municipal Water Supply and Drainage
Shandong Linyi Shuanghou Reservoir Water Transfer Project (DN1200), meeting Class IV geological pressure requirements.
Long-Distance Water Transmission
South-to-North Water Transfer Project Middle Route (DN1800), achieving zero leakage over 50km pipelines, reducing operation and maintenance costs by 30%.
Industrial Special Scenarios
Coastal chemical park wastewater containing chlorine, resistant to pH 2-12 corrosion, with a service life of 30 years.
Construction Standards and Quality Assurance
Requires ≥300mm gravel bedding to prevent coating damage.
Welding uses argon arc welding for root pass, controlling interpass temperature ≤150℃.
Pre-delivery ≥25kV holiday detection and peel strength testing.
Market Competitiveness Analysis
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