METHOD FOR MAINTAINING CONDUIT LINE USING SHEET HEATING ELEMENT

摘要

The present invention discloses a method for maintaining a conduit line using a sheet heating element, more specifically to a method for maintaining a conduit line using the sheet heating element whereby thermohardening resin can be hardened by using a proper sheet heating element which has a good thermal efficiency and does not make a noise for hardening the thermohardening resin that is coated on an inner wall when maintaining part or all of damaged conduit line.