Which is the better product, corrugated or smoothwall?
• This depends on your application and environment that the innerduct will be installed in. Corrugated provides significantly lower pulling friction vs. smoothwall or ribbed smoothwall. Smoothwall type products have much higher tensile strength, but also weigh as much as two times corrugated making them harder to handle because of stiffness and reel memory and much more expensive than corrugated. For direct burial and for cable blowing applications smoothwall duct is the best choice. Corrugated duct is not suited for direct burial or for cable blowing. Give us a call to discuss you needs in more detail.
