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  • Mining Drill Bits Thread Butoon Bit T38 102mm with ...

    High quality Mining Drill Bits Thread Butoon Bit T38 102mm with Ballistic Buttons Top Hammer Drilling Tools from China, China's leading thread button bit product, with strict quality control button drill bits factories, producing high quality button drill bits products.

    Get Price
  • Thread Button Bits, Tapered Button Bits, Conical Mining ...

    2020-6-19u2002·u2002Thread Button Bits, Tapered Button Bits, Conical Mining Bits, Rock Drilling Tools, Mine Fittings, Civil Engineering Tools, Cutting Tools of Shield Machine Supplier, lion rock tools,

    Get Price
  • Thread Button Bit, Top Hammer Consumables, Dth Bits ...

    2021-10-21u2002·u2002GMD Equipment: China professional thread button bit, top hammer consumables, dth hammer, dth bits manufacturers and suppliers. You can source bulk high quality bits made in China at competitive price from our factory.

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  • Thread button bit,Threaded Drill Bits,Drill Bits Granite ...

    Thread button bit,Threaded Drill Bits,Drill Bits Granite,R32 Drill Bit,T38 Button Bit,Thread Drill Bit,Tungsten Carbide Button Bits,Mining Drill Thread Button Bits,Retrac Thread Bit,T45 Thread Button Bit, Normal Body Thread Drill Bit,Spherical Shape Button Bit,Drilling Bit For Fluiconnecto Mining, T38 Thread Button Rock Drill Bit 76mm Threaded-shank Drill Bits,T51-89mm Thread Button Bit Top Hamm

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  • THREADED BUTTON BITS - Xiamen Prodrill

    A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute ...

    Get Price
  • Top Hammer Rock Tools Button Bits Manufacturer – China ...

    2017-7-12u2002·u2002Tapered Button Bits. Taper Degree: 6° 7° 11° 12°. Diameter: 30mm~41mm. Threaded Button Bits. Thread: R22 R25 R28 R32 T38 T45 T51 GT60. Diameter: 33mm~152mm. M/F Drill Rods. Thread: R32 T38 T45 T51 GT60. Length: 915mm~6095mm.

    Get Price
  • ROTARY DRILLING BITS AND DRILL STRING TOOLS

    8 sandvik mining rotary drilling bits and drill string tools bit size mm inch approx. wt. kg lb s07 s10 s15 s17 s20 s30 s35 s40 s47 s50 s60 s70 171 6 ¾' 22 49 x x 200 7 ⅞' 35 77 x x x x x x 2168 ½'36 80 x x 2299' 43 94 x x x x x x 2519 ⅞ 59 130 x x x x x x x x

    Get Price
  • Changsha Wontech Engineering Machinery Co.,ltd. - DTH ...

    Changsha Wontech Engineering Machinery Co.,ltd., Experts in Manufacturing and Exporting DTH Hammer/DTH Bit/Thread Button Bit & Tapered Bit/DTH Drill Pipes & Drill Rods (Top Hammer Tools)/Odex & Concentric System and 832 more Products.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits – Conventional HEX22

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price
  • Mining Drill Bits Thread Butoon Bit T38 102mm with ...

    High quality Mining Drill Bits Thread Butoon Bit T38 102mm with Ballistic Buttons Top Hammer Drilling Tools from China, China's leading thread button bit product, with strict quality control button drill bits factories, producing high quality button drill bits products.

    Get Price
  • Thread Button Bits, Tapered Button Bits, Conical Mining ...

    2020-6-19u2002·u2002Thread Button Bits, Tapered Button Bits, Conical Mining Bits, Rock Drilling Tools, Mine Fittings, Civil Engineering Tools, Cutting Tools of Shield Machine Supplier, lion rock tools,

    Get Price
  • Thread Button Bit, Top Hammer Consumables, Dth Bits ...

    2021-10-21u2002·u2002GMD Equipment: China professional thread button bit, top hammer consumables, dth hammer, dth bits manufacturers and suppliers. You can source bulk high quality bits made in China at competitive price from our factory.

    Get Price
  • Thread button bit,Threaded Drill Bits,Drill Bits Granite ...

    Thread button bit,Threaded Drill Bits,Drill Bits Granite,R32 Drill Bit,T38 Button Bit,Thread Drill Bit,Tungsten Carbide Button Bits,Mining Drill Thread Button Bits,Retrac Thread Bit,T45 Thread Button Bit, Normal Body Thread Drill Bit,Spherical Shape Button Bit,Drilling Bit For Fluiconnecto Mining, T38 Thread Button Rock Drill Bit 76mm Threaded-shank Drill Bits,T51-89mm Thread Button Bit …

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  • THREADED BUTTON BITS - Xiamen Prodrill

    A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute ...

    Get Price
  • Top Hammer Rock Tools Button Bits Manufacturer – China ...

    2017-7-12u2002·u2002Tapered Button Bits. Taper Degree: 6° 7° 11° 12°. Diameter: 30mm~41mm. Threaded Button Bits. Thread: R22 R25 R28 R32 T38 T45 T51 GT60. Diameter: 33mm~152mm. M/F Drill Rods. Thread: R32 T38 T45 T51 GT60. Length: 915mm~6095mm.

    Get Price
  • ROTARY DRILLING BITS AND DRILL STRING TOOLS

    8 sandvik mining rotary drilling bits and drill string tools bit size mm inch approx. wt. kg lb s07 s10 s15 s17 s20 s30 s35 s40 s47 s50 s60 s70 171 6 ¾' 22 49 x x 200 7 ⅞' 35 77 x x x x x x 2168 ½'36 80 x x 2299' 43 94 x x x x x x 2519 ⅞ 59 130 x x x x x x x x

    Get Price
  • Changsha Wontech Engineering Machinery Co.,ltd. - DTH ...

    Changsha Wontech Engineering Machinery Co.,ltd., Experts in Manufacturing and Exporting DTH Hammer/DTH Bit/Thread Button Bit & Tapered Bit/DTH Drill Pipes & Drill Rods (Top Hammer Tools)/Odex & Concentric System and 832 more Products.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits …

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price
  • Rock Drilling Button Bits,Integral Drilling Steels ...

    2021-4-28u2002·u2002Photo of Bit Model Types: R32 Thread 45mm Button Bits. Button Numbers: 9 Button Inserts. Available Threads: R32 SR35. For More Details and Talk, you are always warm welcome to contact us by email [email protected] or Phone Calls/WhatsApp:+8613907256287 Website:www.kinglongrockdrillingtools.com wwwkinglongdrills.com

    Get Price
  • Quality Rock Drill Bits,DTH Drill Bit & Hammer Manufacturer

    Thread Bits Carbide Mining Bit Mining Thread Drill Bits WithTungsten Carbide But. High Hardness H22 Taper Button Bit For Limestone 5 Buttons 32mm For Granite. High Efficiency Underground D45-R32 Threaded Drill Bits. Factory direct sales 305-DHD380 high pressure DTH drill bit. News.

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  • Button bits-R25 thread-Shandong Anbait Mining

    sandvik,epiroc,atlas copoco,drill rods,button bits,drill tube,shank adapter,MF rod,Hex35 drill rods,Hex32 drill rods, R38 drill rods,T51 MF rods, rock bits,drill bits ...

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  • China Mining Bits manufacturer, Rock Bits, Button Bits ...

    2020-7-4u2002·u2002China Mining Bits supplier, Rock Bits, Button Bits Manufacturers Suppliers - Shandong East Machinery & Equipment Co., Ltd.

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  • H & D Steel and Bits - Rock Drill Bits - Crowder Supply

    H thread steel is the most common steel and bits for contractors using hand held percussive rock drills in the US. The bit threads up to the shoulder of the steel and the percussive shock wave is transferred through the shoulder to the face of the bit. It is available in all 3 standard rock drill shank sizes - 7 ⁄ …

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits – Conventional HEX22

    Get Price
  • Rock Drilling Tools - Padley & Venables

    Rock drilling accessories. Integral Drill Steels. Available in shank sizes; 82.5 x 22mm, 108 x 22mm, 108 x 25mm, with head diameters 24-45mm and lengths 400-6400mm. Pilot Rods also available. Taper Drive (Rods & Bits) Available with taper angles; 4.8°, 7°, 11° and 12°. Bits to suit with Button or Cross tungsten carbide tipped heads.

    Get Price
  • Sandvik Alpha 330 Top Hammer Drilling Tool - Mining

    2013-2-5u2002·u2002Well-proven Hex 35 section. The drill string rod/bit connection features an entirely new thread design and the rod itself is of the well-proven Hex 35 section, with a T38 thread at the shank end.. The new short thread design on the hexagonal rods in the tool system result in a rigid, integrated powerpack drill string with superior resistance to bending stresses, improved bit guidance and ...

    Get Price
  • DTH Hammers & Bits - Black Diamond Drilling Canada

    DTH Hammer. The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½'–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines. In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″).

    Get Price
  • Mining Drill Bits Thread Butoon Bit T38 102mm with ...

    High quality Mining Drill Bits Thread Butoon Bit T38 102mm with Ballistic Buttons Top Hammer Drilling Tools from China, China's leading thread button bit product, with strict quality control button drill bits factories, producing high quality button drill bits products.

    Get Price
  • Thread Button Bits, Tapered Button Bits, Conical Mining ...

    2020-6-19u2002·u2002Thread Button Bits, Tapered Button Bits, Conical Mining Bits, Rock Drilling Tools, Mine Fittings, Civil Engineering Tools, Cutting Tools of Shield Machine Supplier, lion rock tools,

    Get Price
  • Thread Button Bit, Top Hammer Consumables, Dth Bits ...

    2021-10-21u2002·u2002GMD Equipment: China professional thread button bit, top hammer consumables, dth hammer, dth bits manufacturers and suppliers. You can source bulk high quality bits made in China at competitive price from our factory.

    Get Price
  • Thread button bit,Threaded Drill Bits,Drill Bits Granite ...

    Thread button bit,Threaded Drill Bits,Drill Bits Granite,R32 Drill Bit,T38 Button Bit,Thread Drill Bit,Tungsten Carbide Button Bits,Mining Drill Thread Button Bits,Retrac Thread Bit,T45 Thread Button Bit, Normal Body Thread Drill Bit,Spherical Shape Button Bit,Drilling Bit For Fluiconnecto Mining, T38 Thread Button Rock Drill Bit 76mm Threaded-shank Drill Bits,T51-89mm Thread Button Bit Top Hamm

    Get Price
  • THREADED BUTTON BITS - Xiamen Prodrill

    A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute ...

    Get Price
  • Top Hammer Rock Tools Button Bits Manufacturer – China ...

    2017-7-12u2002·u2002Tapered Button Bits. Taper Degree: 6° 7° 11° 12°. Diameter: 30mm~41mm. Threaded Button Bits. Thread: R22 R25 R28 R32 T38 T45 T51 GT60. Diameter: 33mm~152mm. M/F Drill Rods. Thread: R32 T38 T45 T51 GT60. Length: 915mm~6095mm.

    Get Price
  • ROTARY DRILLING BITS AND DRILL STRING TOOLS

    8 sandvik mining rotary drilling bits and drill string tools bit size mm inch approx. wt. kg lb s07 s10 s15 s17 s20 s30 s35 s40 s47 s50 s60 s70 171 6 ¾' 22 49 x x 200 7 ⅞' 35 77 x x x x x x 2168 ½'36 80 x x 2299' 43 94 x x x x x x 2519 ⅞ 59 130 x x x x x x x x

    Get Price
  • Changsha Wontech Engineering Machinery Co.,ltd. - DTH ...

    Changsha Wontech Engineering Machinery Co.,ltd., Experts in Manufacturing and Exporting DTH Hammer/DTH Bit/Thread Button Bit & Tapered Bit/DTH Drill Pipes & Drill Rods (Top Hammer Tools)/Odex & Concentric System and 832 more Products.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits – Conventional HEX22

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price
  • Mining Drill Bits Thread Butoon Bit T38 102mm with ...

    High quality Mining Drill Bits Thread Butoon Bit T38 102mm with Ballistic Buttons Top Hammer Drilling Tools from China, China's leading thread button bit product, with strict quality control button drill bits factories, producing high quality button drill bits products.

    Get Price
  • Thread Button Bits, Tapered Button Bits, Conical Mining ...

    2020-6-19u2002·u2002Thread Button Bits, Tapered Button Bits, Conical Mining Bits, Rock Drilling Tools, Mine Fittings, Civil Engineering Tools, Cutting Tools of Shield Machine Supplier, lion rock tools,

    Get Price
  • Thread Button Bit, Top Hammer Consumables, Dth Bits ...

    2021-10-21u2002·u2002GMD Equipment: China professional thread button bit, top hammer consumables, dth hammer, dth bits manufacturers and suppliers. You can source bulk high quality bits made in China at competitive price from our factory.

    Get Price
  • Thread button bit,Threaded Drill Bits,Drill Bits Granite ...

    Thread button bit,Threaded Drill Bits,Drill Bits Granite,R32 Drill Bit,T38 Button Bit,Thread Drill Bit,Tungsten Carbide Button Bits,Mining Drill Thread Button Bits,Retrac Thread Bit,T45 Thread Button Bit, Normal Body Thread Drill Bit,Spherical Shape Button Bit,Drilling Bit For Fluiconnecto Mining, T38 Thread Button Rock Drill Bit 76mm Threaded-shank Drill Bits,T51-89mm Thread Button Bit Top Hamm

    Get Price
  • THREADED BUTTON BITS - Xiamen Prodrill

    A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute ...

    Get Price
  • Top Hammer Rock Tools Button Bits Manufacturer – China ...

    2017-7-12u2002·u2002Tapered Button Bits. Taper Degree: 6° 7° 11° 12°. Diameter: 30mm~41mm. Threaded Button Bits. Thread: R22 R25 R28 R32 T38 T45 T51 GT60. Diameter: 33mm~152mm. M/F Drill Rods. Thread: R32 T38 T45 T51 GT60. Length: 915mm~6095mm.

    Get Price
  • ROTARY DRILLING BITS AND DRILL STRING TOOLS

    8 sandvik mining rotary drilling bits and drill string tools bit size mm inch approx. wt. kg lb s07 s10 s15 s17 s20 s30 s35 s40 s47 s50 s60 s70 171 6 ¾' 22 49 x x 200 7 ⅞' 35 77 x x x x x x 2168 ½'36 80 x x 2299' 43 94 x x x x x x 2519 ⅞ 59 130 x x x x x x x x

    Get Price
  • Changsha Wontech Engineering Machinery Co.,ltd. - DTH ...

    Changsha Wontech Engineering Machinery Co.,ltd., Experts in Manufacturing and Exporting DTH Hammer/DTH Bit/Thread Button Bit & Tapered Bit/DTH Drill Pipes & Drill Rods (Top Hammer Tools)/Odex & Concentric System and 832 more Products.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits – Conventional HEX22

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price
  • Mining Drill Bits Thread Butoon Bit T38 102mm with ...

    High quality Mining Drill Bits Thread Butoon Bit T38 102mm with Ballistic Buttons Top Hammer Drilling Tools from China, China's leading thread button bit product, with strict quality control button drill bits factories, producing high quality button drill bits products.

    Get Price
  • Thread Button Bits, Tapered Button Bits, Conical Mining ...

    2020-6-19u2002·u2002Thread Button Bits, Tapered Button Bits, Conical Mining Bits, Rock Drilling Tools, Mine Fittings, Civil Engineering Tools, Cutting Tools of Shield Machine Supplier, lion rock tools,

    Get Price
  • Thread Button Bit, Top Hammer Consumables, Dth Bits ...

    2021-10-21u2002·u2002GMD Equipment: China professional thread button bit, top hammer consumables, dth hammer, dth bits manufacturers and suppliers. You can source bulk high quality bits made in China at competitive price from our factory.

    Get Price
  • Thread button bit,Threaded Drill Bits,Drill Bits Granite ...

    Thread button bit,Threaded Drill Bits,Drill Bits Granite,R32 Drill Bit,T38 Button Bit,Thread Drill Bit,Tungsten Carbide Button Bits,Mining Drill Thread Button Bits,Retrac Thread Bit,T45 Thread Button Bit, Normal Body Thread Drill Bit,Spherical Shape Button Bit,Drilling Bit For Fluiconnecto Mining, T38 Thread Button Rock Drill Bit 76mm Threaded-shank Drill Bits,T51-89mm Thread Button Bit Top Hamm

    Get Price
  • THREADED BUTTON BITS - Xiamen Prodrill

    A reaming bit functions to enlarge a borehole and it is designed with a drill portion and a reamer portion. The drill portion is formed by cutting edges at the end of a plurality of flutes, and the reamer portion includes pilot adapter a first relief formed on each flute surface disposed at a predetermined angle with respect to the flute ...

    Get Price
  • Top Hammer Rock Tools Button Bits Manufacturer – China ...

    2017-7-12u2002·u2002Tapered Button Bits. Taper Degree: 6° 7° 11° 12°. Diameter: 30mm~41mm. Threaded Button Bits. Thread: R22 R25 R28 R32 T38 T45 T51 GT60. Diameter: 33mm~152mm. M/F Drill Rods. Thread: R32 T38 T45 T51 GT60. Length: 915mm~6095mm.

    Get Price
  • ROTARY DRILLING BITS AND DRILL STRING TOOLS

    8 sandvik mining rotary drilling bits and drill string tools bit size mm inch approx. wt. kg lb s07 s10 s15 s17 s20 s30 s35 s40 s47 s50 s60 s70 171 6 ¾' 22 49 x x 200 7 ⅞' 35 77 x x x x x x 2168 ½'36 80 x x 2299' 43 94 x x x x x x 2519 ⅞ 59 130 x x x x x x x x

    Get Price
  • Changsha Wontech Engineering Machinery Co.,ltd. - DTH ...

    Changsha Wontech Engineering Machinery Co.,ltd., Experts in Manufacturing and Exporting DTH Hammer/DTH Bit/Thread Button Bit & Tapered Bit/DTH Drill Pipes & Drill Rods (Top Hammer Tools)/Odex & Concentric System and 832 more Products.

    Get Price
  • DRILL BITS & DRILL STEEL CATALOGUE - Vula Drilling

    2014-8-22u2002·u20026 Button Bits – Full Body Flushing HEX22 Ø Part Gauge Top Flushing Holes Taper Number Buttons Buttons Top Side 32 BS32-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 34 BF34-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 36 BF36-42-11 4 x 7 S/Bal 2 x 7 Con 1 1 11º 6 Button Bits – Conventional HEX22

    Get Price
  • Choosing Drill Steel and Rock Drill Bits - Crowder Supply

    The bits range from 1 3/8' up to 3' diameter in full carbide cross (most common), 1 3/8' to 2' in shallow carbide cross, 1 3/8' to 2 1/4' in button bit bits and 1 3/8' to 2 -5/8' diameter in an all steel bit. H thread drill steel is usually made from a high carbon steel.

    Get Price