PLASTICS PIPING SYSTEMS. INJECTION-MOULDED THERMOPLASTICS FITTINGS, VALVES AND ANCILLARY EQUIPMENT. DETERMINATION OF THE LONG-TERM HYDROSTATIC STRENGTH OF THERMOPLASTICS MATERIALS FOR INJECTION MOULDING OF PIPING COMPONENTS.
塑料管道系统 注塑热塑性塑料配件、阀门和辅助设备 管道部件注射成型用热塑性材料长期静水压强度的测定