QB/T 2568-2002 "Solvent cements for unplasticized poly (vinyl chloride)(PVC-U) plastic piping system"

This standard specifies the product classification, materials and production, requirements, test methods, inspection rules, marking, Encasement, transport and storage of Adhesives for rigid polyvinyl chloride (PVC) (PVC-U) piping systems. Adhesives are classified as ordinary, medium and heavy based on viscosity. Resins are mainly polyvinyl chloride (PVC) Resin or chlorinated polyvinyl chloride (PVC) Resin. The choice of solvent system is not specified, but mixed solvent systems such as tetrahydrofuran and cyclohexanone can be used to prepare Adhesives that meet the requirements of the standard. Adhesive should be uniform viscous liquid, free of impurities, gel mass and delamination, and meet the performance requirements specified in Table 1.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.