More recently, Beijing Qingyun United Chemical Building Materials Technology Co., Ltd. has introduced water-supply-lined composite steel pipes and aluminum-plastic PP-R pipes to the construction industry.
The water-supply lined plastic composite steel pipe is made of galvanized steel pipe as outer pipe, inner wall lined with polyethylene (PE) or random copolymer polypropylene (PP-R) pipe, and is made of special process heat compounded to match the lining plastic malleable cast iron pipe fittings. use. Aluminum-plastic PP-R pipe is made of lap-welded aluminum pipe as embedded metal layer reinforced, and it is compounded by co-extruding hot-melt adhesive and inner and outer layer random polypropylene (PP-R) or polyethylene (PE) plastic. An aluminum-plastic composite pressure pipeline for conveying hot and cold water in buildings. The former is connected with threads, and the latter is connected with hot melt. All of them passed the qualified testing of the National Chemical Building Materials Testing Center. The health performance was qualified by the China Preventive Medicine Institute of Health Surveillance and was recorded by the Beijing Construction Committee Building Materials Office.
The water-supply lined plastic composite steel pipe is made of galvanized steel pipe as outer pipe, inner wall lined with polyethylene (PE) or random copolymer polypropylene (PP-R) pipe, and is made of special process heat compounded to match the lining plastic malleable cast iron pipe fittings. use. Aluminum-plastic PP-R pipe is made of lap-welded aluminum pipe as embedded metal layer reinforced, and it is compounded by co-extruding hot-melt adhesive and inner and outer layer random polypropylene (PP-R) or polyethylene (PE) plastic. An aluminum-plastic composite pressure pipeline for conveying hot and cold water in buildings. The former is connected with threads, and the latter is connected with hot melt. All of them passed the qualified testing of the National Chemical Building Materials Testing Center. The health performance was qualified by the China Preventive Medicine Institute of Health Surveillance and was recorded by the Beijing Construction Committee Building Materials Office.
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