钻头尺寸为:主要用于:石油天然气钻井,水井,地热钻井,煤矿勘探,矿山开采,桥梁建设等。常规型号为:37/8(98mm),45/8(118mm),57/8(149mm),6(152mm),61/2(165mm),71/2(190mm),77/8(200mm),81/2(216mm),91/2(241mm),97/8(250mm),105/8(269mm),115/8(295mm),121/4(311mm),135/8(346mm),151/2(393mm),16(406mm),171/2(445mm),26(660mm)等。规格:钻孔直径:88.9-660.4(mm)钻孔深度:1000(m)外形尺寸:88.9-660.4(mm)优点:质量高,寿命长,耐磨性强,产品齐全,价格优廉包装:纸箱木箱(内装有说明书及产品合格证)型号齿形:钢齿:114116117126127136214等镶齿:417437447517537617637737837等产品说明:1、用途:打油田井、打水井,矿山、煤矿开采,地质勘察、水文探测、工程打桩、地热开发、桥梁等钻探领域2、IADC编码:113,,114115,117,127,137,214215216216227237,314315316317325326327,415425435445,417427437,517527537,515525,617627637,615625,732,8323、尺寸:31/2,37/8,41/2,51/2,6,61/2,71/2,81/2,83/4,91/2,95/8,105/8,121/4,133/4,143/4,151/2,16,171/2,20,22,23,24,26,28,304、适用地层:粘土、软地层、中硬地层和硬地层,岩石层5、 订购量:1只