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Flanged Nestable Corrugated Steel Pipe consists of half-round sections of corrugated steel pipe with external side flanges that are easily bolted together to form a circular corrugated steel pipe. It is developed in the early 1930’s to facilitate overseas shipping, sections can be nested into compact, easy-to-handle bundles allowing for economical transportation for long-haul distances, remote sites, or international destinations.

Corrugated Steel culvert are made of carbon steel. Steel pipes with circumferential corrugation have high load bearing capacity. Culverts built with this kind of pipe segments are called corrugated steel culverts. To prevent corrosion, corrugated metal culvert pipes are usually made of galvanized carbon steel usually with a zinc coating range from 275g/m2 to 1200g/m2, which is still changeable and subject to customers’ requirements.

CSP culvert are made of carbon steel. which is with annular corrugation have high load bearing capacity. Culverts built with this kind of pipe segments are called corrugated steel culverts. To prevent corrosion, corrugated metal culvert pipes are usually made of galvanized carbon steel usually with a zinc coating range from 275g/m2 to 1200g/m2, which is still changeable and subject to customers’ requirements.