Pipe wrenches should be inspected regularly. Replace the heel and jaw section if found to be defective or worn out.
应当定期检查管钳，更换已磨损或有伤痕的钳牙及牙床。
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.
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。
The novel scheme can solve the problem that speed for adjusting jaw opening is too slow for the prior-art pipe tongs.
新方案能够解决传统管钳调节钳口的开口量时速度过慢的弊端。
The novel scheme can solve the problem that speed for adjusting jaw opening is too slow for the prior-art pipe tongs.
新方案能够解决传统管钳调节钳口的开口量时速度过慢的弊端。
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