Features Gallery Product Description Request A Quote

Features

Specifications

Coating: Powder Coating, Extrusion Coating

Certification: CE, ISO, RoHS

Surface Treatment Grade: ≥SA2.5

Coating Type: Internal, External

Coating Material: Epoxy Powder, Adhesive, Polyethylene

Specification: 50-4200mm

Substrate: Steel

Coating Structure: Fbe, 2lpe, 3lpe

Heating Method: Induction Heating

Transport Package: Standard Package For Export

Highlight:

Internal and External Coating 3LPE Coating Pipe Production Line

Induction Heating Three-Layer Polyethylene Coating Line

50-4200mm Steel Pipe Anti-Corrosion Coating Line

Basic Infomation

Place of Origin: China

Brand Name: Huashida

Certification: CE, Rohs，TUV

Payment & Shipping Terms

Packaging Details: Standard packaging

Delivery Time: 70 days

Payment Terms: T/T

Supply Ability: 30 set a year

Gallery

50-4200mm Induction Heating 3LPE Coating Pipe Production Line with Internal and External Coating for Steel Pipe Anti-Corrosion

Product Description

Product Overview

The 3PE (Three-Layer Polyethylene) coating system is an advanced anti-corrosion solution built from three functional layers: Fusion-Bonded Epoxy (FBE) as the inner corrosion-resistant layer, Adhesive (AD) as the intermediate bonding layer, and Polyethylene (PE) as the outer protective layer.

This three-layer structure delivers excellent corrosion resistance, strong mechanical protection, superior electrical insulation, and long-term durability. With reliable coating performance and environmental adaptability, 3PE technology is widely used in oil and gas transmission pipelines, urban water supply systems, and district heating networks.

Technological Process

1. Pipe Loading
2. Conveying
3. Shot Blasting (Rust Removal)
4. Induction Heating
5. FBE Coating
6. AD & PE Extrusion Coating
7. Water Cooling
8. Conveying
9. Pipe End Grinding
10. Unloading

Main Equipment Composition

System	Included Equipment
Surface Treatment	Shot blasting machine, cyclone dust collector, pulse dust remover
Heating System	Induction heating equipment
Coating System	FBE powder coating unit, adhesive extruder, PE extruder
Cooling System	Water spraying and cooling device
Conveying System	Pipe loading/unloading platform, turning rollers
Control System	PLC automatic control system
Auxiliary Equipment	PE beveling machine, hydraulic lifting system, exhaust & ventilation system

Our Advantages

Cost Reduction

High sealing performance, energy-saving operation, and environmentally friendly design.

Long Service Life

Easy installation and construction, with a lifespan of up to 30–50 years.

Excellent Impact Resistance

Performs well even at low temperatures, with low water absorption.

Superior Anti-Corrosion Performance

Reliable protection through a simple and economical process.

Fully Automatic Operation

PLC control with intelligent sensors for position, speed, and energy monitoring ensures precision and efficiency.

Applications

Three-layer PE coated steel pipes are widely used in:

Oil and gas transmission pipelines — providing long-term protection against corrosion and external damage.
Urban gas and water supply systems — ensuring safe, clean, and reliable transport of fluids.
District heating networks — maintaining insulation and corrosion resistance under high-temperature conditions.
Underground and industrial anti-corrosion projects — offering durable protection for buried and exposed steel pipelines.

Global Application

This advanced coating technology has been successfully applied in major infrastructure projects both domestically and internationally. Products are exported to Europe, the Middle East, Central Asia, Africa, Russia, and other regions worldwide.

Company Profile

Qingdao Huashida Machinery Co., LTD is a manufacturer of plastic pipe machines, municipal pipe machines, pipe insulation and anti-corrosion machines, and pipe jointing and anti-corrosion materials, with over 20 years of production experience.

Main Products

HDPE jacket pipe for pre-insulated pipe production line (110–2000 mm)
Rigid pre-insulated pipe production line
Flexible pre-insulated pipe (PERT) production line
Steel pipe FBE / 2LPE / 3LPE anti-corrosion coating line
Steel pipe derusting line
PE pressure pipe / water and gas supply pipe production line
PP / PE plastic board, sheet, and geomembrane production line
NBR PVC thermal insulation tube and plate production line
Pipeline anti-corrosion materials and instruments: heat shrink joint coating sleeve, electro-fusion weldable joint sleeve, portable welding gun (extruder), PE / PP welding rod

We have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Iran, Turkey, Russia, Nigeria, and other countries.