The Chatting Heat into the Ji Project is a key project in the integrated construction of heating in Jinan City, consisting of two north-south lines with a total pipeline length of approximately 130 kilometers. The heating medium is 130 ℃ high-temperature hot water, and the maximum heating capacity can reach 100 million square meters. The insulation pipeline is made of our company's hard polyurethane sprayed polyethylene wrapped prefabricated buried pipe, with a specification of DN1600.