hj537

1.Reliable bearing system 2.Fast drilling rate 3..size rang from3"1/2-26" 4.Certification: API & ISO9001 5.delivery on time Type6"(152mm), 6 1/2"(165mm), 8 1/2"(215.9mm), 9 1/2"(241.3mm), 12 1/4"(311mm) , 13 5/8"(346mm) , 14 5/8"(371mm), 15"(381mm), 17 1/2"(445mm), 24"(609mm), 26"(660mm)IADC 147,437,447,517,527,537,547 (HJ or HA)KN/mm 0.5~1.20R/min 100~50Applicable Formations/layer Low ...

1.Sizes range from 3 7/8" to 26" . 2.Reliable bearing and lubrication system 3.MOQ: one piece 4.The best price and delivery. 1.Cutting structureThe durability of premium tungsten carbide insert is improved with new formulas and new techniques2.Gauge StructureGauge protection with gauge inserts on the surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge ...