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China, Chinese Bestlink Mining Down The Hole Rock Button Bits for Quarrying Granite1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Drilling ToolsBitsDTH Bits
Xiamen Bestlink Factory Co., Ltd.
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Product Description Bestlink Manufacturer Down The Hole Button Bits for QuarryingDTH bit is our main product. After many years searched, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.1.high and low air pressure down-the-hole drill bits 2.Low air pressure hole Dia.:65-220mm 3.Face type: drop center / concave / convex / double gauge / flat Technical Data:CIR series low air pressure DTH bits:TypeDia.Spline No.Weight (Kg)CIR656862.5CIR707663.4CIR808363.45CIR80X8363.5CIR909063.5CIR9010064.5CIR9013069.5CIR11011066.4CIR11012368.5CIR110W11066.5CIR110W12368.8CIR150155612CIR150A155612.5CIR150A165614CIR170175615.5CIR170A185616CIR200W200648 J series low air pressure DTH bits:TypeDia.Spline No.Weight (Kg)J60C6542.26J70C7542.8J80B8543.2J80B9044.8J100B11045.04J100B11545.5J100B12046.25J150B155414J150B160415.5J150B165422J170B170424.5J170B180428.6J200B210443.5J200B220445 ----Selection of DTH BIT FACE SHAPE AND CARBIDE BUTTON SHAPE---- A: Bit face shape selectionDropCenter BitFor high penetration rates in soft to medium-hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.Concave faceThe all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.Convex faceFor high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.Double Gauge faceThis kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.Flat Face BitThis kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.B: Insert Carbide Button Shape Selection Matching the insert to the job requirements is essential in achieving the desired results. Different buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels. In general, the larger the number of gauge buttons the better overall performance, especially in hard rock. Hemispherical1. Height 0.5 ?2. Application Strength - multipurpose3. Best suited to hard ground4. 25,000 to 45,000 PSI (170 to 300 MPa)5. Abrasive to very abrasiveBallistic Button1. Height 0.75 ?2.Application Strength - fast penetration3.Best suited to soft ground4.10,000 to 20,000 PSI (70 to 140 MPa)5. Non abrasive groundParabolic Button (semi ballistic)1. Height 0.6 ?2. Application Strength - fast penetration3. Best suited to medium ground4. 15,000 to 25,000 PSI (100 to 170 MPa)5.Mildly abrasive groundConical Button1. Height 0.65 ?2. Application Strength - fast penetration3. Suited for all non-abrasive ground types4. Smaller contact area5. Best suited for smaller diameter bits
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