7 Button 40mm Hard Rock Drill Bits For Mining
Brand Name:OEM
Certification:ISO9001:2015
Minimum Order Quantity:1 set
Delivery Time:10-20 days working days
Payment Terms:T/T, L/C, T/T, Western Union
Place of Origin:CHINA
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40mm 7 button hard rock drill bits for mining
Drill bits are widely used in tunneling, mining, construction, stonework, transportation facility construction etc. For rocks with hardness F=15-18 Class, GL is suitable; for rocks with hardness F=12-15 Class, GA is suitable; for rocks with hardness F=10-12 Class, GB is the suitable.
| Specification | |
Application | Tunneling, mining, construction, stonework engineering and
transportation facilities etc. |
Assemble | Connected to the H22 drilling rod.(Small end : 18×7° , Insertion
depth : 30-33mm) |
Rocks with hardness | GL:Granite, basalt(F=15-18) GA:Granite, quartz porphyry, siliceous schist, the hardest
sandstone and limestone(F=12-15) GB:Dense granite, strong sandstone,limestone,quartz veins,sturdy
conglomerate,iron ore(F=10-12) |
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7 Button 40mm Hard Rock Drill Bits For Mining
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