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Ridgisewer Integrally Socketed Pipes are available in 400-600mm diameters in standard 3m lengths (6m lengths available on request, subject to minimum order quantities). They are manufactured in accordance with BSI Kitemark License number KM55701 to WIS 4-35-01 and are BBA Approved. Sizes 750-3000mm are available as Ridgistorm-XL.