
Amendment To En 253 Preinsulated Bonded Pipe Systems For Underground Hot Water Networks - Pipes Assembly Of Steel Service Pipes, Polyurethane Thermal Insulation And Outer Casing Of High Density Polyethylene
出版:British Standards Institution

專家解讀視頻
Amendment To En 253 Preinsulated Bonded Pipe Systems For Underground Hot Water Networks - Pipes Assembly Of Steel Service Pipes, Polyurethane Thermal Insulation And Outer Casing Of High Density Polyethylene
出版:British Standards Institution
專家解讀視頻