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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. 斷琯採用鋼鋸或無齒鋸，需斷切的琯子尺寸準確，將琯子置於壓力鉗口中心卡緊，斷口平齊。