3-Layer PE Coated Steel Pipe Extrusion Making Line for Oil and Gas Transmission Pipelines

• Customization: Available
• After-sales Service: Technical Service with Free,Training The Workers
• Warranty: 12 Months
• Model NO.: hsd
• Type: Coating Production Line
• Coating: Powder Coating
• Substrate: Steel
• Certification: CE, ISO, RoHS
• Condition: New
• Coating Material: Epoxy Powder, Adhesive, Polyethylene
• Coating Type: Internal, External
• Surface Treatment: Grade≥SA2.5
• Heating Method: Induction Heating
• Coating Structure: Fbe, 2lpe, 3lpe
• Transport Package: Standard Package for Export
• Specification: 50-4200mm
• Trademark: huashida
• Origin: Qingdao, China
• HS Code: 8477209000
• Production Capacity: 30sets/Year
• Package Size: 1000.00cm * 220.00cm * 180.00cm
• Package Gross Weight: 1000.000kg

Product Description

3-Layer Polyethylene (3LPE) Anti-Corrosion Steel Pipe Coating Line

The 3LPE anti-corrosion steel pipe is composed of three distinct layers:

First Layer – Epoxy Powder Coating: Applied directly onto the steel surface, providing excellent adhesion and corrosion resistance.
Second Layer – Copolymer Adhesive: A bonding layer with branched functional groups that ensure strong integration between the epoxy and polyethylene layers.
Third Layer – High-Density Polyethylene (HDPE): The outer protective layer that offers high mechanical strength, low water absorption, and long-term durability.
These three layers combine to form a highly effective anti-corrosion system, widely used in pipeline protection around the world.

Advantages of the 3LPE Pipe Coating Line

Excellent Sealing Performance: Minimizes leakage and energy loss during long-term operation.
Strong Corrosion Resistance: Resists chemical and environmental damage even under harsh conditions.
Long Service Life: Expected service life of 30–50 years, significantly reducing maintenance and replacement costs.
Good Low-Temperature Performance: Maintains structural integrity and protection at low temperatures.
Low Water Absorption: HDPE layer prevents moisture penetration, enhancing durability.
High Mechanical Strength & Impact Resistance: Protects pipelines from external forces during installation and operation.
Cost-Effective Production: Combines reliable performance with an efficient and economical production process.

Parameter Description	Description
Pipe Diameter Range	50 – 4200 mm
Processing Capacity	≥ 250 m²/h
Surface Cleaning Standard	≥ Sa2.5
Production Materials	Epoxy powder, adhesive, polyethylene
Coating Application Methods	Winding type or round mold wrapping type

Our Advantages

 Advanced Technology: Based on global best practices and continuously improved.
 Stable Operation: Reliable performance with minimal downtime.
High Degree of Automation: Reduces labor cost and increases efficiency.
 International Quality Standards: Meets ISO and other global certification requirements.
Full Turnkey Solutions: From design, installation, commissioning, to operator training.
Global Experience: Drawing from successful deployment in 389 installations worldwide.
 Professional Technical Team: Includes 9 senior engineers and access to a high-end plastic machinery equipment expert workstation in China.

Technological Process Flow

Upload Pipes
Pipe Screw Conveyor Transport
Rust Removal (Surface Preparation)
Intermediate Frequency Heating
Epoxy Powder Coating Application
Adhesive and HDPE Outer Layer Coating
Cooling Spray
Pipe End Grinding
Final Inspection & Unloading

Main EquipmentList
No.	Name	Set
A. Derusting Equipment
1	Pipe wheel conveyor	1
2	Shot Blasting Machine	1
3	Cyclone Dust Collector	1
4	Pulse dust collector	1
5	Centrifugal exhaust fan	1
6	Rust removal equipment PLC	1
B. Coating equipment
1	Pipe wheel conveyor	1
2	Induction heating device	1
3	Powder spraying device	1
4	Automatic loading dryer	2
5	SJ-65/30 Extruder	1
6	SJ-120/30 Extruder	1
7	Hot melt adhesive extruder die	1
8	PE sheet extruder head mold	1
9	Hot melt adhesive/PE sheet coating device	1
10	Environmental Protection Ventilation equipment	1

11	Cooling Spray equipment	1
C.Platform Equipment
1	Steel pipe uploading platform	1
2	Downloading platform	1
3	Pipe storage platform	1
4	Turnover machanism	3
D.Groove Equipment
1	PE Beveling Machine	2
2	Hydraulic Lifting and Turning Machinery	1
3	Hydraulic Equipment	1
4	PLC automatic control system	1

Applications
3LPE-coated pipes are widely used in critical infrastructure projects across various industries:

Oil and Gas Transportation Pipelines
Urban Gas Distribution Systems
Municipal Water Supply Networks
Industrial Fluid Transmission Systems

Company Profile

Qingdao Huashida Machinery Co., LTD, is a manufacturer of series of plastic pipe machines, municipal pipe machines, pipe insulation&anticorrosion machines, and pipe jointing&anticorrosion materials, with 21 years of production experience. Our main products are:
1. HDPE jacket pipe for pre-insulated pipe Production Line (110-2000mm)
2. Rigid pre-insulated pipe Production Line
3. Flexible pre-insulated pipe(PERT) production line
4. Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
5. Steel pipe derusting line
6. PE pressure pipe/Water Gas supply pipe production line
6. PP/PE plastic board/sheet/geomembrane production line
7. NBR PVC Thermal insulation tube/plate production line  
8.Pipeline anti-corrosion materials and instruments: heat shrink joint coating sleeve, electro-fusion weldable joint sleeve, portable welding gun(extruder), PE PP welding rod.  

 

Certifications