Durable 3LPE coating for buried and submerged pipelines. Multi-layer system ensures long-term corrosion resistance and mechanical durability
Three-Layer Polyethylene (3LPE) coated steel pipe is the most widely used anti-corrosion system for oil, gas, and water pipelines worldwide. The 3LPE system combines the advantages of epoxy adhesion, copolymer bonding, and polyethylene mechanical protection to create a durable, long-lasting coating. These coated pipes provide excellent corrosion protection, impact resistance, and long service life in buried, submerged, and exposed applications.
Product Features Excellent long-term corrosion protection
High mechanical strength and impact resistance
Good flexibility and crack resistance
Low water vapor transmission
Wide operating temperature range (-40°C to +80°C)
UV resistant (with carbon black stabilization)
Easy to handle and transport
Compatible with cathodic protection
Product Applications
Cross-country oil and gas pipelines
Water transmission mains
Municipal pipeline networks
Mining slurry pipelines
Industrial piping systems
Subsea pipelines
Pipeline rehabilitation and relining
Product Standards
ISO 21809-1 (Three-layer polyolefin coatings) DIN 30670 (Polyethylene coatings for steel pipes) CSA Z245.21 (External polyolefin coating) NACE SP0394 (Application of polyolefin coatings) AWWA C214 (Tape coating systems - comparable) EN 10288 (Steel tubes and fittings for pipelines)
Product Process
Pipe surface inspection → Abrasive blast cleaning (Sa 2.5) → Induction heating → Epoxy powder application (first layer) → Adhesive copolymer extrusion (second layer) → Polyethylene extrusion or side-wrap (third layer) → Water cooling → Holiday detection (high voltage spark test) → Thickness measurement → Visual and dimensional inspection → End cut-back protection → Marking → Packaging
Product Packaging
Heavy-duty rubber or plastic end caps Individual protective wrapping Wooden dunnage for sea shipment Steel bundling with protective padding Container or flat rack loading UV protection for long-term storage








