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DTH Button Bits Full Diameter Range 64mm 445mm Tungsten Carbide Inserts for Down The Hole Hammer Drilling

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DTH Button Bits Full Diameter Range 64mm 445mm Tungsten Carbide Inserts for Down The Hole Hammer Drilling

Name: DTH Button Bits Full Diameter Range 64mm 445mm Tungsten Carbide Inserts for Down The Hole Hammer Drilling
Brand: ROSCHEN
Price: 85 USD

Brand Name : ROSCHEN

Model Number : DTH-FR-64445

Place of Origin : Guangdong, China

Certification : ISO 9001:2015

MOQ : 5 Pieces

Price : USD 85-850 / Piece

Payment Terms : T/T, L/C, Western Union

Supply Ability : 10000 Pieces per Month

Delivery Time : 5-7 working days for stock items, 20-30 days for production orders

Packaging Details : Plywood case with foam cushioning, export-grade seaworthy packaging with humidity indicator

Diameter Range : 64mm - 445mm (2-1/2" - 17-1/2")

Shank Types : DHD, COP, QL, SD, Mission, BR, CIR, NUMA

Face Design Options : Flat, Concave, Convex, Drop Center

Button Shape Options : Spherical, Ballistic, Parabolic, Semi-Ballistic

Working Pressure : Low 0.5-0.7 MPa / Medium 1.0-1.5 MPa / High 1.5-3.0 MPa

Body Material : Forged Nickel-Alloy Steel

Insert Material : Premium Tungsten Carbide (YG8/YG11)

Heat Treatment : Case Hardened with Stress Relief Process

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Full Diameter Range DTH Button Bits 64mm - 445mm

The ROSCHEN Full Range DTH Button Bits cover the most comprehensive diameter spectrum in down-the-hole drilling, from compact 64mm (2-1/2") bits to large-diameter 445mm (17-1/2") bits. This complete range enables a single-supplier solution for drilling contractors working across diverse projects at every scale.

Diameter Range Coverage

Category	Diameter Range	Typical Hammer Series
Small Diameter	64mm - 105mm	BR1, BR2, BR3, DHD3.5, COP32
Medium Diameter	110mm - 165mm	DHD340, DHD350, DHD360, COP44, COP54, COP64, QL40, QL50, QL60, Mission40, Mission60
Large Diameter	172mm - 254mm	DHD380, COP84, QL80, SD8, Mission80
Extra Large Diameter	254mm - 445mm	NUMA100, NUMA120, NUMA125, DHD1120, SD12

Key Advantages

Complete Range: 64mm to 445mm covers quarry, mining, water well, geothermal, construction foundation and tunneling applications with a single trusted source
Premium Alloy Steel Body: Forged nickel-alloy steel undergoes precise heat treatment including carburizing, quenching and tempering for maximum fatigue resistance under high-frequency piston impact
Top-Grade Carbide Inserts: YG8 and YG11 tungsten carbide buttons engineered for specific rock hardness, with spherical, ballistic and parabolic profiles available
Multiple Face Designs: Flat face for hard rock, concave face for all-round drilling, convex face for high penetration rates, and drop center for soft to medium formations
Universal Shank Compatibility: Precision-machined splines match DHD, COP, QL, SD, Mission, BR, CIR and NUMA hammer shanks for seamless integration

Quality Assurance

Every bit undergoes CNC machining tolerance inspection, carbide button brazing integrity testing, and dimensional verification against original equipment specifications. ISO 9001:2015 certified manufacturing ensures consistent quality across all diameter ranges.

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