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| Brand Name : | OEM | 
| Model Number : | |
| Certification : | ISO9001:2015 | 
| Price : | Negotiation | 
| Payment Terms : | T/T, L/C, T/T, Western Union | 
| Supply Ability : | Based on the detailed quotation | 
| Delivery Time : | 10-20 days working days | 
Product Description
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)  | 
Photos of 40mm 7 button hard rock drill bits for mining
 

Package of 40mm 7 button hard rock drill bits for mining


                                 
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| Beijing Silk Road Enterprise Management Services Co.,LTD | 
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