36-4200mm External Shot Blasting 3lpe Steel Pipe Coating Line for Oil Gas Pipelines

This 36-4200mm External Shot Blasting 3LPE Steel Pipe Coating Line is a fully automatic, high-throughput external anti-corrosion coating production line engineered for factory-grade external surface treatment of steel pipes across an ultra-wide diameter range of 36mm to 4200mm. Configured exclusively for external shot blasting and 3LPE coating, this system delivers optimal solutions for oil & gas pipeline projects requiring external-only corrosion protection.

This professional coating line supports multi-layer external coating configurations including single-layer FBE, 2LPE, and three-layer polyethylene (3LPE) anti-corrosion coating - the internationally recognized standard for buried oil & gas pipeline external protection. Widely applied in oil & gas transmission pipelines, long-distance buried steel pipe networks, municipal water supply infrastructure, and offshore pipeline construction projects.

The three-layer polyethylene (3LPE) external anti-corrosion coating system consists of three bonded functional layers:

• Layer 1 - FBE Epoxy Base Layer: Fusion Bonded Epoxy powder forms a high-molecular cross-linked protective structure with outstanding chemical anti-corrosion performance, wear resistance, and mechanical strength.
• Layer 2 - Polymer Adhesive Middle Layer: The hot melt adhesive layer bonds the FBE base to the outer polyethylene layer, forming the structural bridge between layers.
• Layer 3 - Polyethylene (PE) Outer Protective Layer: High-density polyethylene provides mechanical impact resistance, abrasion protection, and waterproof barrier properties.

• Ultra-Wide 36-4200mm Diameter Coverage: Processes the full spectrum from small-bore gathering lines to large-diameter transmission pipelines
• External-Only Configuration: Purpose-built for external shot blasting and 3LPE coating without internal coating equipment
• Sa2.5 Shot Blasting Surface Preparation: Achieves international surface cleanliness standard for maximum FBE adhesion
• Low Friction External Coating Surface: Smooth 3LPE outer surface reduces soil friction and fluid transmission resistance
• High Automation & Operational Efficiency: Full PLC automatic control stabilizes coating thickness consistency
• Environmental Compliance: Professional dust collector and powder recovery system compliant with CE & ISO14001 standards

• Process Adaptability: Supports single-layer FBE, 2LPE, 2LPP, and 3LPE external coating configurations
• Diameter Range: 36mm to 4200mm
• Processing Capacity: ≤250m²/h sustained throughput
• Coating Thickness: FBE base layer 80-800μm; total 3LPE thickness customizable to project specifications
• Temperature Accuracy: ±2°C with intermediate frequency heating system
• Standards Compliance: DIN 30670, BS EN 10329, AWWA C215

A: 36-4200mm - the full small-to-large bore spectrum for oil & gas pipeline external coating, available in configurations including Φ36-325mm, Φ325-1200mm, Φ325-1620mm, Φ325-1820mm, Φ508-2540mm, Φ508-3600mm, and Φ325-4200mm.

A: No - this line is configured exclusively for external shot blasting and 3LPE coating, making it the optimal solution for projects specifying external-only anti-corrosion protection.

A: Sa2.5 international surface cleanliness standard, ensuring maximum 3LPE coating adhesion and zero delamination risk in buried oil & gas service.

A: ≤250m²/h sustained throughput across the full 36-4200mm diameter range.

A: FBE base layer 80-800μm; total 3LPE coating thickness customizable according to project pipeline specifications and international standards (DIN 30670, BS EN 10329).

A: 2-3 months after deposit confirmation.

A: 12-month mechanical warranty / 6-month electrical warranty. Pre-sale: free workshop planning and capacity assessment; Sale: on-site engineer installation and commissioning, free operator training; After-sales: 24-hour remote technical support for the operating life of the equipment.

Qingdao Huashida Machinery Co., Ltd. was established in 2003. For over 20 years, Huashida has focused on the R&D and production of external shot blasting 3LPE anti-corrosion coating lines, steel pipe FBE/2LPE/3LPE coating production systems, polyurethane insulation pipe production lines, large-diameter underground pipeline equipment, and plastic pipe fitting production machinery.

We maintain long-term technical cooperation with Tsinghua University, Beijing University of Chemical Technology, South China University of Technology, and other national research institutions. By integrating advanced global technologies and international standards, we have become one of the top 3 pipeline coating machinery manufacturers in the Chinese industry.