Pipe connector for town gas pipelines comprises coupling sleeve overlapping pipe ends and sealing sleeve inserted between each pipe end and coupling sleeve, leaving cylindrical space into which pressurised fluid can be fed?keyword=Pipe connector for town gas pipelines comprises coupling sleeve overlapping pipe ends and sealing sleeve inserted between each pipe end and coupling sleeve, leaving cylindrical space into which pressurised fluid can be fed专利查询检索|Pipe connector for town gas pipelines comprises coupling sleeve overlapping pipe ends and sealing sleeve inserted between each pipe end and coupling sleeve, leaving cylindrical space into which pressurised fluid can be fed?keyword=Pipe connector for town gas pipelines comprises coupling sleeve overlapping pipe ends and sealing sleeve inserted between each pipe end and coupling sleeve, leaving cylindrical space into which pressurised fluid can be fed专利申请-路标网

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