According to the requirements of national and international product standards, the raw materials for the production of plastic pipes and fittings for hot and cold water must be in accordance with GB/T18252-2000 "Determination of Long-term Hydrostatic Strength of Thermoplastic Pipes by Extrapolation in Plastic Pipeline Systems" Special materials for pipes that are specified to be tested and passed the qualification judgment. That is to say, each raw material manufacturer must make a creep failure curve that meets the predicted strength reference curve according to the floor heating pipe product standard, in order to prove that the raw materials sold are qualified. Just doing a test of one point of thermal stability under the hydrostatic state at 110°C and 8760 hours cannot prove whether the raw material of the pipe is qualified.
If you do not know whether the raw material product is qualified, it is equivalent to the fact that the label of cement is not determined, and the use strength cannot be determined. No matter what kind of pipes are used to lay floor heating, only qualified pipes produced by using raw materials that meet the requirements of product standards, and production equipment and processes are reasonable, through correct design, installation and use, can reliably ensure the use of plastic pipes for floor radiant heating. Life expectancy is fifty years.
Product Standards
GB/T 13663-2000 "Polyethylene (PE) pipes for water supply"
GB/T 19001-2000idtISO9001:2000 "Interpretation and Application of Construction Industry Standards"
design standards
GB 50264-97 "Code for Design of Equipment and Pipeline Thermal Insulation Engineering"
GB 4272-92 "General Rules for Equipment and Pipeline Insulation Technology"
GB 8175-87 "Guidelines for Design of Equipment and Pipeline Thermal Insulation"
GB 11790-89 "General Rules for Equipment and Pipeline Cooling Technology"