Wholesale API water well tungsten carbide insert tricone bits IADC537 with elastomer sealed bearing for hard formmation in stock with discounted price from China factoryBit Description: IADC: 537-TCI journal sealed bearing bit with gauge protection for soft to medium soft formations with low compressive strength. Compressive Strength: 85-100 MPA 12,000-14,500 PSI Ground Description: Medium hard and abrasive rocks such as sandstones with streaks of quartz, hard limestone or chert, hematite ores, hard, well-compacted abrasive rock such as: sandstones with quartz binder, dolomites, quartzite shales, magma and metamorphic coarse grained rocks. Far Eastern Drilling can offer tricone bits in a variety of sizes (from 3”to 26”) and most of IADC Codes.Available sizes for water well drilling rock bits are ranging from 3 7/8" to 26", the thread connection are all following API Spec 7, main thread connection are 2 3/8 reg, 2 7/8 reg, 3 1/2 reg, 4 1/2 reg, 6 5/8 reg, 7 5/8 reg. Main regular sizes: 3 7/8", 4 1/2", 4 5/8", 4 3/4", 5 1/4", 5 1/2", 5 7/8", 6", 6 1/2", 7 1/2", 7 7/8", 8 1/2", 9 1/2", 9 7/8", 10 5/8", 11 5/8", 12 1/ 4", 13 5/8", 14 3/4", 15", 15 1/2", 16", 17 1/2", 26", etc. Bearing types include open bearing, roller sealed bearing, journal sealed bearing, friction sealed bearing, the bearings are lubricated by specific grease and further lubricated by compensation system. With fast delivery time and warm after-sale service, China Far Eastern has serviced for mroe than 35 countries in past 10 year In drilling project, We have experience to supply the drill bits and advanced drilling soulutions for many different applications. The application including water well drilling oil field,natural gas,geological exploration,driectional boring ,The various drill bits can be customized as per different rock formation becasue we have our own API & ISO certified factory of tricone drill bits. We can give our engineer's solution when you can supply specific conditions, such as hardness of rocks,types of drilling rig,rotary speed,weight on bit and torque. It is also hlep us to find the siutable drill bits after you can tell us vertical well drilling or horizontal drilling ,oil well drilling .