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NPT, Pt, G are pipe threads What is NPT screw thread? N … 阅读更多PT thread, NPT thread, G thread, metric thread
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Use common type tap, which problems are always happen? … 阅读更多Tapping problems, REASONS AnALYSIS, solutions
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In machining process, tapping method normally used to m … 阅读更多SCREW THREAD KNOWLEDGE