HPL PE-Coated Culverts

HPL PE-coated Steel is a polyethylene-coated galvanised steel with the same steel strength and galvanizing weight (G250 and Z600) as used in the manufacture of our standard culverts. The reinforced PE layer provides considerable additional protection to the underlying galvanizing resulting in substantially increased lifespan of the culverts, even in the most aggressive conditions.

HPL materials are available in wall thicknesses of 2.0mm to 3.0mm in the 68 x 13mm and 125 x 25mm corrugation profiles specified in AS/NZS 2041.4.

Unlike other PE-coated steels, HPL has a reinforcement layer within the polymer that provides very high resistance to abrasion, harsh environmental conditions, and localised surface damage. The coating is typically applied to both the internal and external surfaces of the culverts, but single-sided coating is also available, if required.