Product Overview

Large diameter SSAW (Spiral Submerged-Arc Welded) steel pipe, combined with 3PE (3-Layer Polyethylene) or FBE (Fusion Bonded Epoxy) anti-corrosion coating, is the ideal choice for buried pipeline engineering. Widely applied in long-distance oil & gas transmission, urban water supply networks, heating systems, and industrial fluid transportation. With excellent mechanical strength and superior corrosion resistance, this product has been validated in numerous major energy and water infrastructure projects worldwide.

Why Choose SSAW Spiral Pipe?

◆ Large Diameter Range: Available from 219mm to 3000mm, meeting the demands of trunk pipeline networks.

◆ Cost-Effective: Continuous production enables single pipe lengths of 12m to 18m, reducing field weld joints and significantly lowering installation costs.

◆ High Strength: Uniform stress distribution along the spiral weld. The pipe withstands high pressure and ground settlement, complying with API 5L, ASTM A53, GB/T 9711 standards.

Coating Systems Comparison

Coating Type	Key Advantages	Recommended Application
3PE	Impact & abrasion resistant, best all-round protection	Oil/gas long-distance, buried water mains, crossing projects
FBE	Strong adhesion (≥10MPa), chemical resistant	Small/medium lines, field joints, bends
TPEP	Smooth inner bore (low friction), drinking water compliant	Water transmission, firefighting systems

3PE coating is the industry standard for buried steel pipelines, with a design service life of 30 to 50 years. The three-layer structure-epoxy primer for chemical resistance, adhesive layer for bonding strength, and PE topcoat for mechanical protection-forms an impenetrable barrier. Major national projects like the West-East Gas Pipeline have adopted 3PE coating, proving its reliability under complex geological conditions.