牙轮钻头的尺寸知识讲解
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尺寸 型号(IADC)
英寸 mm 镶齿牙轮钻头 钢齿牙轮钻头
6 152.4 517, 537,617, 637 126.127.216.217. 316.346.347
6 1/2 165.1 517, 537 126.127.216.217. 316.346.347
7 7/8 200.0 517,527,547,617,627,637 126.127.216.217. 316.346.347
8 1/2 215.9 437,447,517,537,617,627,637 126.127.216.217. 316.346.347
9 1/2 241.3 437,517,537,547,617 126.127.216.217. 316.346.347
9 5/8 244.5 437,517, 537,547,617 126.127.216.217. 316.346.347
9 7/8 250.8 437,517, 537,547,617 126.127.216.217. 316.346.347
12 1/4 311.1 437,517, 537,547,617,627,637 126.127.216.217. 316.346.347
17 1/2 444.5 517,537,617,627,637 126.127.216.217. 316.346.347
24 609 417,517, 537,547,617,637 126.127.216.217. 316.346.347
26 660 417,517, 537,547,617,637 126.127.216.217. 316.346.347