HIGH-STRENGTH DOUBLE PIPE USING PLASTER AND ADDITIVES TO REDUCE MANUFACTURING COSTS AND PREVENT ENVIRONMENTAL POLLUTION BY REUSING INDUSTRIAL WASTES

摘要

PURPOSE: A high-strength double pipe using plaster and additives is provided to improve the physical properties of the double pipe, reduce manufacturing costs and prevent environmental pollution by reusing industrial wastes such as plaster. CONSTITUTION: A high-strength double pipe is composed of an inner layer(1), and an outer layer(2). The inner and outer layers are integrally laminated by extrusion molding. The inner layer is made of high-density hard PVC resin, plaster and additives. The outer layer is made of high-strength impact-resistant PVC resin, plaster and additives.