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3LPE Coated Steel Pipe - Durable Anti-Corrosion Solution from China Suppliers & Factory
Detailed Description of 3LPE Coated Steel Pipe
The 3LPE coating system is known internationally as one of the highest levels of external pipeline protection technology in the world. It comprises the excellent adhesion and corrosion resistance of FBE, with the superior mechanical protection and moisture barrier of polyethylene (PE). Each layer is synergistic in long-term protection.
1
Layer 1: Fusion Bonded Epoxy (FBE) Primer
This is the main corrosion barrier and a strong bond to the steel surface.
2
Layer 2: Copolymer Adhesive
This serves to chemically "bridge" the FBE primer to the polyethylene topcoat, so that the three layers of the system will bond together.
3
Layer 3: Polyethylene (PE) Top Coat
Provides a strong physical barrier to mechanical damage, wear and tear due to abrasion, and soil stress during transportation, installation, and in operation.
Key Parameters
| Parameter | Details |
|---|---|
| Coating Structure | FBE Primer + Adhesive Layer + PE Top Coat |
| Coating Standards | ISO 21809-1, DIN 30670, CAN/CSA Z245.21, NFA 49-710, NACE RP0185, GB/T 23257, SY/T 0413 |
| Total Coating Thickness | 1.8mm - 4.0mm (or as per project/standard requirements) |
| Peel Strength (to steel) | >100 N/cm @ 23°C |
| Impact Resistance | >10 J |
| Dielectric Strength | >25 kV/mm |
| Water Absorption | <0.2% |
Frequently Asked Questions
What is 3LPE Coated Steel Pipe?
3LPE Coated Steel Pipe is a high-performance pipeline with a three-layer polyethylene coating consisting of an FBE primer, a copolymer adhesive, and a polyethylene top coat for superior corrosion and mechanical protection.
What are the primary benefits of the FBE layer?
The Fusion Bonded Epoxy (FBE) layer acts as the primary corrosion barrier, providing excellent adhesion to the steel surface and protecting it from chemical degradation.
Which international standards do these pipes comply with?
Our 3LPE coated pipes meet major global standards including ISO 21809-1, DIN 30670, CAN/CSA Z245.21, and NACE RP0185, ensuring reliability in diverse environments.
How thick is the 3LPE coating?
The total coating thickness typically ranges from 1.8mm to 4.0mm, though it can be customized based on specific project requirements or regional standards.
What makes 3LPE suitable for harsh environments?
The outer Polyethylene (PE) layer provides exceptional resistance to impact, abrasion, and moisture, while the multi-layer system ensures high peel strength and low water absorption.
What is the peel strength performance of this coating?
The 3LPE system offers excellent bonding, with a peel strength to steel exceeding 100 N/cm at a temperature of 23°C.