has the advantages of both metal pipe and plastic pipe, overcome the shortcomings-heat expansion of PP-R, PE, PB, PE-X pipes Features1, For hot and cold water: temperature minus 40 degrees to 95 degrees;2, Long life: 50 years of quality assurance;3, Easy installation: hot melt connection, never leakage;4, Good insulation: thermal conductivity coefficient;5, Low expansion: expansion close to the ...