PART REPAIR MATERIAL FOR AVOIDING ROOT OF TREE AND DRAIN PIPE NON-EXCAVATION INTERNAL SIDE PART MAINTENANCE AND WHOLE METHOD MIXED MAINTENANCE METHOD USING SAME

摘要

The present invention relates to a part repair material for avoiding a root of tree, and a drain pipe non-excavation internal side part maintenance and a whole method mixed maintenance method using the same. The part repair material for avoiding a root of tree comprises: a fiberglass reinforced polyester portion staked in multiple layers; and an avoiding unit for a root of tree portion installed on the external surface of the fiberglass reinforced polyester portion.;COPYRIGHT KIPO 2015