roll grip pipe wrench 链条管子钳 ; 链条管扳手
Pipe smokers sometimes wear down the tips of their teeth where they grip their pipes.
抽烟斗的人用牙齿咬住烟斗，有时会把牙齿尖磨平。
As the teeth on the inside of the slips grip the pipe, the slips are pulled down.
当卡瓦内表面的牙齿抓住管子后，把卡瓦向下拉。
A mounting hole for arranging the high strength friction grip bolt is arranged at the top of the rectangle steel pipe column.
所述的矩形钢管柱的上部开有用于安装高强螺栓的安装孔。
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