Smooth wall is the industry standard High Density Polyethylene (HDPE) Duct. The interior of smooth wall has a slick finish which delivers a low coefficient of friction for easy blowing or pulling of cable. It can also be pre-lubricated in our manufacturing facility for an even lower coefficient of friction. Smooth wall innerduct is a durable high quality product for direct burial and HDD (horizontal directional drilling) applications. Smooth wall is also used as an “innerduct”, meaning several conduits are placed inside a larger casing pipe.
