Smart Joint as a HDPE pipe, fitting and fusion machine manufacturer, we also set up a trenchless installation team, focusing on new pipeline installation, old steel, ductil iron, glassfiber or concrete pipe relining projects. For, this 1200mm concrete relining projects , it adpot U shape insertion relining method, with various 1200mm electrofusion couplers, saddle branches, end caps, elbows ect. adopted in the project.