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Drill bits and countersinks
  1. HEJIAN HUANYU PETROLEUM MACHINERY CO., LTD.

    China

    HY 417 517 Medium Formation TCI Tricone Bits This 517 bit features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability . such as: shale , clay , sandstone, soft limestone IADC CODE: 112 121 131, 127 , 137, 215 216 217 , 311 312 315 317, 327, 417 427 437, 415 425, 435, 517, 527 , 537, 547, 517, 525, 535, 617, 627, 637, 647, 625, 635, 637, 712, 737, 837, 832

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