Service

At GCM, we adhere to the one-to-one targeted design of high-quality solutions, and use the professional knowledge and full-cycle services of our account managers to help customers carry out project operations, and thoroughly solve customers’ problems in equipment procurement, operating cost accounting, operation management and after-sales service. Distress, thereby improving customer profitability and achieving sustainable business development.

  • Well Drilling Method - hardrockdrills.com

    Dec 29, 2017· DTH(Down The Hole) Drilling. Rotary Drilling. The drill bit, usually a tricone roller, is rotated by the hollow drill collar and drill pipe. Torque is applied through the rotary table and kelly. Drilling fluid is circulated down the drill pipe and out openings in the bit where it cleans cuttings from beneath the bit, cools the bit …

    Read More
  • Reverse Circulation - Mincon Group PLC

    Welcome to Mincon Group PLC! We Specialize in developing, manufacturing and servicing hard-rock drilling tools, such as our DTH hammers and bits, for a variety of applications. We have been delivering consistent quality since 1977.

    Read More
  • RC Hammers Reverse Circulation - Drilling Supplies

    The Missile Reverse Circulation line of hammers are used in a wide range of drilling rigs in various geological formations. They are preferred by on-site geologists for their high percentage of uncontaminated sampling; their fast penetration rates; and their …

    Read More
  • How to Select Rotary / Tricone Drilling Bit ...

    Jun 30, 2018· Rotary drilling tricone bit is essential for Borehole Rotary drilling such as for Piling Drilling, Foundation Drilling, Mining Drilling, Oil/Gas Drilling and Water Well Drilling.Normally it works with mud pump or air compressor as drilling …

    Read More
  • Mincon Rockdrills – "The Driller's Choice" in Reverse ...

    With the sole focus of producing reverse circulation hammers and bits, the plant is turning out drilling equipment of the highest quality in a state of the art facility. Having the facility in the heart of reverse circulation drilling country has allowed timely feedback on performance and access to some of the world's top drilling …

    Read More
  • Products | Numa Tool Company

    Conventional Rock Drilling Hammers & Bits. Reverse Circulation Hammers & Bits. Super Jaws Overburden Drilling Systems. Leaders in the Industry. We lead the industry in conventional, reverse circulation, and horizontal application hammers and bits…

    Read More
  • FAQs - Drillco

    Top Quality DTH Hammers and Bits. Our Value Proposition is based in our expertise in the drilling industry, constantly developing highly technological products with an excellent quality that allows our customers to achieve a lower Total Drilling Cost (TDC).This has a direct impact in productivity, reducing the total cost per extracted ton sent to plant, as well as the total cost per ton ...

    Read More
  • Numa Hammers and Bits, Rock Drilling Equipment, HDD, Rock ...

    DTH and HDD Products for a Wide Range of Applications . Numa is the world's leading drilling technology provider, dedicated to ongoing product innovation and results-oriented consistency.For 35 years, we've built a strong legacy of high quality, made in the USA rock drilling hammers and bits for drilling vertical, horizontal, and reverse circulation holes 3½ -50½ inches (89 -1283 mm) in ...

    Read More
  • 6 Advantages of Reverse Circulation Vs Direct Circulation ...

    Jun 04, 2018· 5. Lower drilling cost. The reverse circulation drilling has higher drilling efficiency, and can get better quality well hole and longer life time for drill bit. The total cost is lower – compared to direct circulation drilling, it is around $5 lower per meter. 6. Larger diameter hole can be drilled

    Read More
  • Halco Rock Tools - America West Drilling Supply

    Halco Rock Tools Ltd. is a world class manufacturer of down the hole (DTH) drilling equipment. Halco pioneered the development and distribution of DTH hammers in the 1950s, and now their precision-engineered range of performance hammers and drill bits is used globally.

    Read More
  • DTH Drill Bits manufacturer - Quality DTH Hammer Bits ...

    Quality DTH Drill Bits, DTH Button Bits & Top Hammer Drill Bits suppliers & exporter - all products made in China. ... Reverse Circulation Hammer. DTH Drill Rods. Casing Drilling System. ... Rick Liao. Phone Number : 86-18692219720 WhatsApp : +8618692219720 Products . Hard Rock Drill Bits DTH Drill Bits SP1880 For Water Well Blasting Drilling ...

    Read More
  • Rock Drill Bits | Epiroc/ | Rock Drill Sales

    Rock Drill Sales is a proud distributor and partner of Epiroc/. We offer a variety of rock drilling bits, including: tophammer bits, rotary / tricone bits, DTH bits and PDC bits.We also stock and sell a great selection of bit thirds for horizontal drilling applications.. offers five basic bit designs: Convex, Flat Front, SpeedBit, Concave, and Rocket Bit.

    Read More
  • Design and numerical analysis of a large‐diameter air ...

    Down-the- hole (DTH) air hammer drilling is considered as one of the most efficient drilling methods for hard rock drill-ing.1-3 In the DTH air hammer drilling, straighter holes and action and high impact loads at the bit inserts.4,5 Contacting time of drill bit inserts with the rock …

    Read More
  • Secoroc Rock Drilling Tools Product catalogue – DTH …

    Codes for DTH bits Example: 100-5165-59-1211,08-20 =165 mm DHD 360 Head design Examples: 0 = DTH bit L = Long Head R = Long Retrieval Head Bit type Examples: 5 = Button bit Bit diameter in mm 165 = 165 mm Head features Examples: 0= gradeDTH bit B= Back reamingproduct inserts G= Gauge protection insert T= Fish thread Type of 1= Drill bit …

    Read More
  • Reverse Circulation RC Hammer For R50 ROC L8RC ...

    RC drilling is over five times faster than core drilling, particularly in hard rock and almost half the cost of traditional core drilling. RC hammers are pneumatically driven by compressors and the principal operation of a Reverse Circulation hammer and bits is the same as a standard DTH hammer.

    Read More
  • RC Drilling Reverse Circulation Hammers RC OD 116mm SRC545

    RC Drilling Reverse Circulation Hammers RC OD 116mm SRC545 . It has the following characteristics: 1 .Based on previous experience of conventional hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.

    Read More
  • Cluster Drill - America West Drilling Supply

    America West Drilling Supply supplies drilling equipment to the well drilling, exploration drilling, construction drilling, and oil field drilling industries providing items such as: DTH hammers and bits, reverse circulation RC hammers and bits, whip socks, rotary bits, well pipe clamps, pipe wrenches, and overburden drilling systems.

    Read More
  • Reverse circulation impactor-Changhong drill,DTH hammer ...

    4.Equipment with bits designed with patent.Simplt by replacing the drill bit,the same hanmmer can drill holes different sizes ensuring that the sample is not contaminated. 5.In difficult conditions such as loose soil,hard rock and plenty of water exist,sampling can be done well. Specifications of RC Reverse Circulation DTH hammer:

    Read More
  • Design and numerical analysis of a large‐diameter air ...

    Mar 18, 2019· Reverse circulation down‐the‐hole (RC‐DTH) air hammer drilling is a fast and cost‐effective method for hard rock drilling. As the air RC drill bit is the heart for RC‐DTH air hammer drilling system to form the reverse circulation, a large‐diameter RC drill bit was innovatively designed and numerically optimized with respect to the suction ability.

    Read More
  • Well Drilling Method - hardrockdrills.com

    Dec 29, 2017· DTH(Down The Hole) Drilling. Rotary Drilling. The drill bit, usually a tricone roller, is rotated by the hollow drill collar and drill pipe. Torque is applied through the rotary table and kelly. Drilling fluid is circulated down the drill pipe and out openings in the bit where it cleans cuttings from beneath the bit, cools the bit and carries ...

    Read More
  • Hardrock - Reverse Circulation(RC) Drilling Rig - ISO ...

    Nov 27, 2019· In this case, the reverse circulation drilling(RC drilling) will be the better choice. Hardrok DTH Reverse Circulation Principle. It is opposite from DTH direct circulation drilling method. Air go to hammer via the annular area between outer pipe and inner pipe and take the cuttings out of hole through the area of inner pipe.

    Read More
  • Halco Reverse Circulation Hammer and Reverse ...

    RC drilling is over five times faster than core drilling, particularly in hard rock and almost half the cost of traditional core drilling. RC hammers are pneumatically driven by compressors and the principal operation of a Reverse Circulation hammer and bits is the same as a standard DTH hammer.

    Read More
  • RC Drill Hammers – Drilling Supply RC Hammers

    RC drilling is over five times faster than core drilling, particularly in hard rock and almost half the cost of traditional core drilling. RC hammers are pneumatically driven by compressors and the principal operation of a Reverse Circulation hammer and bits is the same as a standard DTH hammer.

    Read More
  • DTH Drilling - Robit Plc

    DTH Drilling A down-the-hole drill, usually called DTH is mainly a pneumatic powered rock or ground drill, in which the percussive hammer is located directly behind the drill bit, so the percussion mechanism follows the bit down into the drill hole. The drill pipes transmit the necessary feed force and rotation to the DTH hammer […]

    Read More
  • Warrior Hammers - DTH Drilling Hammers - Varel Mining and ...

    The initial offering features a 6" hammer built to be a reliable workhorse – combining high performance and efficiency with a rugged construction. Its easy-to-service design allows for minimal service time and higher productivity. A range of QL60 shank bits complement the hammer for reliable and high performance drilling.

    Read More
  • HARDROCK Winder, GA About Us

    The air then passes through the end of the bit removing rock cuttings through the bore hole back to atmospheric air pressure. We call this up hole velocity and measure this in feet per minute. Down the hole percussive hammers are cost effective for drilling hard rock.

    Read More
  • Remet Or Metzke Thread Reverse Circulation Hammers For ...

    Reverse Circulation hammer (RC hammer) is our most advanced product, used in deep hole exploration drilling and mining ore grade control, etc. Characteristic: - Reference the design and production experience of conventional DTH hammer and combine the operating characteristics of RC hammer…

    Read More