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PE-RT to warm the raw material is a very stable mechanical properties of medium density polyethylene, the ethylene monomer and octene copolymer made by metallocene catalysis. Its unique backbone and ethylene-octene short branched-chain structure, so that it also has an ethylene superior toughness, resistance to stress cracking resistance, low temperature impact resistance, excellent resistance to pressure long-term performance and octene heat creep. 1, flexibility: PE-RT softer. No special tools, so construction costs are much lower. 2, thermal conductivity: for floor heating pipes need to have good thermal conductivity. Better thermal conductivity of PE-RT, as PP-R, PP-B pipe twice its thermal conductivity. Ideal for floor heating use. 3, low-temperature thermal shock resistance: PE - RT low temperature impact performance is better. Winter construction of pipe rupture less susceptible to shocks, increasing the flexibility of the construction schedule. 4, environmental protection: PE-RT and PP-R can be recycled, do not pollute the environment. PEX can not be recycled and will produce secondary pollution; 5, processing performance stability: PEX with controlling the degree of crosslinking and crosslinking uniformity and other problems, and the processing of complex machining directly affect the pipe performance. The PE-RT, and PP-R process is simple, pipe performance basically determined by the raw materials, more stable performance. PE-RT hot melt connection method can be used, from accidental damage can also be used to repair the pipe hot melt connection. Warm material has meet product standards creep damage curve, is the only polyethylene stage without crosslinking can be used for a variety of hot water pipes.