断管采用钢锯或无齿锯，需断切的管子尺寸准确，将管子置于压力钳口中心卡紧，断口平齐。
Broken pipes adopt a hacksaw or a saw without teeth. The size of pipe needing to cut should be exact. Put pipes on the center of pressure jaw, and keep fractures even.
如图所示的管卡，它使用圆的、方的或长方形钢板，使其弯曲与管子外园贴合。
Pipe clamps similar to this illustrated in the figure were developed that utilized round, square, or rectangular pieces of steel curved to fit the outside of the pipe.
当卡瓦内表面的牙齿抓住管子后，把卡瓦向下拉。
As the teeth on the inside of the slips grip the pipe, the slips are pulled down.
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