加工管长度Processing of pipe length (直径不能大于长度)（Diameter not greater than the length of） ..
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管子加工长度 Pipe Length
实践表明，加工管板不同的走刀路线其长度相差极大。
Practice shows that different knife route for machining tube sheet will cause a very big difference of it's length.
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部件长度小于2“，可以配合管切割加工以节省成本。”
In parts under 2 "in length, Notching can be combined with tube cutting, for cost savings."
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