首页>
外国专利>
PLASTIC PIPES INCLUDING AN OUTER corrugated TUBES AND A smooth inner wall of a deformable MATERIAL AND A METHOD FOR Repairing OR RENOVATION OF A SEWER TUBES WITH SUCH A PLASTIC PIPES
PLASTIC PIPES INCLUDING AN OUTER corrugated TUBES AND A smooth inner wall of a deformable MATERIAL AND A METHOD FOR Repairing OR RENOVATION OF A SEWER TUBES WITH SUCH A PLASTIC PIPES
展开▼
机译:包括可变形材料的外部波纹管和光滑内壁的塑料管以及用这种塑料管修复或翻新下水管的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A plastic pipe consisting of an outer corrugated plastic pipe and an inner smooth wall consisting of a wear resistant elastomer, particularly a thermoplastic rubber fixed in the inner bottoms wave valleys to said outer corrugated pipe. The inner wall consists of a pipe which has been coextruded with the outer corrugated pipe so that the inner and outer pipe are heat welded to each other. The cavities between the inner pipe and the corrugations may be filled with a foam plastic. This plastic pipe is used for repairing or renewing a sewage pipe by installing such a pipe from a vertical shaft of the sewage system into the sewage pipes. The interstices between the outer side of the corrugation and the inner side of the sewage pipe may be filled with a mortar.
展开▼