oa Civil Engineering = Siviele Ingenieurswese - New version of revolutionary pipe launched in South Africa
Extracted from text ... New version of revolutionary pipe launched in South Africa A REVOLUTIONARY VERSION of structured wall pipe (SWP), a technologically advanced lightweight and durable high-density polyethylene pipe, has been launched in the South African market. The spirally wound pipe, which is substantially lighter than its concrete and vitreous clay counterparts, features a unique rectangular profile which is wound over the inner liner of the pipe. This rectangular profile is intimately bound to the inner liner and uses geometric efficiency to offer superior ring stiffness without the sacrifice of excess raw material. According to Spiro SWP MD Johann van Zyl, high-density polyethylene ..
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