金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use. Economical but last...
使用具有竞争力的检修井能够防止喷管问题的发生。我们生产的检修井永远不会沉降和下沉。也不会产生波纹管塌陷的问题。
Prevents nozzle problems associated with settling of all competitive below-grade manholes. Non-settling, never-sink manhole. No problem with bellows collapsing unlike competitive products.
金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use.
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