| 摘要 |
A double grab ring, a grab ring pipe and a piping structure using the same are provided to a connection pipe from being released caused by strong water pressure by connecting the connection pipe with the double grab ring and the grab ring pipe. A double grab ring(1) has a pressing unit and a saw-teeth unit. The pressing unit of the double grab ring is communicated with a body. The saw-teeth unit is formed at an end of the pressing unit. The saw-teeth of the saw-teeth unit of an adhering unit and the pressing unit are arranged on the same place or crossed each other. The grab ring pipe has a pipe fitting unit(52), and a tapered unit(57). The pipe fitting unit helps one pipe body to be fitted into another pipe body. A grab ring receiving unit is formed in the grab ring. The tapered unit can be molded with the pressing unit of the grab ring.
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