3LPE Steel Pipe Coating Line for Oil Gas and Water Pipelines

Product Overview

The three-layer PE process utilizes an epoxy powder coating as the bottom layer, bonded with polyethylene (PE) and adhesive for robust anti-corrosion protection of steel pipes. This method is widely adopted domestically and internationally for oil and gas pipelines, as well as civil gas and water supply systems.

Key Benefits:

• Extended Service Life: Lifespan of steel pipes extended from 5–10 years to 50–100 years.
• Excellent Corrosion Resistance: Strong barrier against environmental factors.
• High Mechanical Strength: Protects against physical impacts and wear.
• Good Electrical Insulation: Prevents electrical corrosion; suitable for power & communication pipelines.
• Environmentally Friendly: Minimizes pollution and meets modern standards.
• High Degree of Mechanization: Stable process, high efficiency, reduced labor.
• Versatile Applications: Oil, gas, water supply, and civil pipelines.
• Low Maintenance Costs: Durable, reducing long-term expenses.
• Strong Adhesion & Thermal Stability: Reliable coating in various climates.

Technological Process

1. Upload Pipes
2. Screw Conveyor for Pipes
3. Rust Removal via Intermediate Frequency Heating
4. Epoxy Powder Coating
5. Application of Outer Layer Solid Liquid & Polyethylene Coating
6. Cooling Spray
7. Screw Conveyor for Pipes
8. Grinding Pipes
9. Unload Pipes

Product Parameters

Steel Pipe Outside Shot Blasting Derusting Operation Line

Steel Pipe Outside Spiral 3PE Production Line

Platform System

Grooving System

FAQ

Q1. What is the size of pipe diameter your equipment can produce?
A: Four main models: 48–219mm, 219–1220mm, 800–1600mm, 1000–2400mm

Q2. What is the descaling grade?
A: SA2.5

Q3. What is your anti-corrosion coating standard?
A: Compliant with SY/T0413-2002, GB/T23257-2009, German DIN 30670 & DIN 30678, American Corrosion Association, DNV, SY/T0315-2005, CNPC38-2002

Q4. What is the delivery time?
A: 2–3 months after deposit

Q5. What is the production output?
A: 3–8 km/day, annual capacity up to 2 million m² (Φ508 mm)

Q6. What is the coating thickness?
A: 80–800 µm

Q7. In which countries have you sold your 3PE equipment?
A: Russia, Iran, UAE, India, Belarus, Kazakhstan, and more

Q8. What is your after-sales service?
A:

• Warranty: Trial operation before delivery
• Mechanical Parts: 12 months
• Electrical Parts: 6 months

Company Profile

Qingdao Huashida is a leading manufacturer and exporter of anti-corrosion and insulation equipment in China with over 20 years of experience. We provide both standard and customized solutions for global clients.

Main Products:

1. HDPE jacket pipe for pre-insulated pipe production line 
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
7. PP/PE plastic board / sheet / geomembrane production line
8. NBR/PVC thermal insulation tube/plate production line
9. Pipeline anti-corrosion materials: heat shrink sleeves, electro-fusion sleeves, portable welding gun (extruder), PE/PP welding rods