| Customized: | Customized |
|---|---|
| Standard: | AISI, API |
| Length: | Taper-length |
| Type: | Core Drill Bit |
| Material: | High Carbon Steel |
| Usage: | Masonry Drilling, Rock Drilling |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier 32mm Tapered 7 tooth/buttons Drilling bit
The selection of button bit is quite concerning with the rock condtion. If you don't know how to choose an applicable button bit, we strongely suggest you study the rock conditon first.
Below is the rock hardness grade list for your reference.
| Rock Grade | Hardness Level | Typical Rock | f grade | Photo | |
| I | The hardest | the hardest and compact quartz, basalt and other special hard rocks | f=20 | ||
| II | strong hard | very hard granite&quartz porphyry&siliceous schist, hard quartz, the hardest sandstone &limenstone rock | f=15 | ||
| III | very hard | compact granite, ver hard sandstone&limestone, quartz vein, hard conglomerate, very hard iron ore | f=10 | ||
| IIIa | very hard | hard sandstone, limestone, marble, dolomite, pyrite ore, not hard granite | f=8 | ||
| IV | hard | normal sandstone, iron ore | f=6 | ||
| IVa | hard | Sandy shale, shaly sandstone | f=5 | ||
| V | middel hard | hard pelitopsammite, not hard sandstone and limestone, soft conglomerate | f=4 | ||
| Va | middel hard | ||||
| VI | soft | ||||
| Via | soft | ||||
Our package and products for other clients
Match with B22 drill rod
FAQ Collection:
Q1: Are you factory or trade company?
A1: We are factory. And we have ourselves trading company.
Q2: What the exactly address of your factory?
A2: Our factory is located in No.9 Kaixuan Ave West,Economic Zone Quzhou, Zhejiang, China
Q3: Warranty terms of your machine?
A3: One year warranty for the machine and technical support according to your needs.
Q4: Will you provide some spare parts of the machines?
A4: Yes, of course.
Q5: What about the voltage of products? Can they be customized?
A5: Our standard voltage is 380V, 50HZ, 3phase. The voltage can be customized according to your equirement.
Q6: Which payment term can you accept?
A6: 30% T/T in advanced, 70% T/T against the B/L copy.
Q7: How long will you take to arrange production?
A7: we can delivery the normal goods within 7-15 days. Other nonstandard electrical items we will delivery within 25-30 days.
Q8: Can you accept OEM orders?
A8: Yes, with professional design team, OEM orders are highly welcome.
Q9: Which trade term can you accept?
A9: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.
Suppliers with verified business licenses
Audited Supplier 
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