Complaint
| Drill Diameter | The connection specification | Alloy (star) | Stomates | Weight(KG) | Notes |
| 50 | 29×4 | 5 | 1 | 1 | With type 50 hammer |
| 65 | 37×4 | 6 | 1 | 1.4 | With type 60 hammer |
| 76 | 44×4 | 8 | 2 | 2.2 | With type 70 hammer |
| 80 | 50×6 | 8 | 2 | 3.2 | With type 80 hammer |
| 90 | 54×6 | 10/11 | 2/3 | 3.9 | With type 90 hammer |
| 100 | 54×6 | 10/11 | 2/3 | 4.1 | With type 90 hammer |
| 110 | 54×6/60×4/65×6 | 13 | 2/3 | 6.0 | With type 90/100B/110 hammer |
| 120 | 54×6/60×4/65×6 | 12/13 | 2/3 | 6.2 | With type 90/100B/110 hammer |
| 130 | 54×6/60×4/65×6 | 15 | 3 | 7.2 | With type 90/100B/110 hammer |
| 140 | 60×4/65×6 | 15 | 3 | 7.9 | With type 100B/110 hammer |
| 145 | 60×4/65×6 | 16 | 3 | 8.2 | With type 100B/110 hammer |
| 150 | 60×4/65×6/90×6 | 16/20 | 3 | 8.6-19.8 | With type 100B /110/150 hammer |
| 160 | 65×6/90×6 | 20/21 | 3 | 19.3 | With type 110/150 hammer |
| 170 | 65×6/90×6 | 20 | 3 | 19.8 | With type 110/150 hammer |
| 175 | 65×6/90×6 | 20/21 | 3 | 20 | With type 110/150 hammer |
| 180 | 65×6/90×6 | 20 | 3 | 21.6 | With type 110/150 hammer |
| 200 | 90×6 | 20 | 3 | 24 | With type 150 hammer |
| 105 | 64×8 | 13 | 2 | 8 | With type 340 hammer |
| 115 | 64×8 | 13 | 2 | 8.5 | With type 340 hammer |
| 140 | 82×8 | 14 | 2 | 12 | With type 350 hammer |
| Rock grouping and recommended use of the bit table | ||||
| Grade | name | Represents | Drilling speed | Suggested drill bit |
| 1 | Loose soil | redeposited loess,lateritite,Soft sandy soil free of gravel and breccia,diatomite | 15/H | Pineapple bit,slice,plain film,Scraper coreless bit |
| 2 | Loose soil | loess,red clay,cumulosol,Sand soil,Kaolin class | 8/H | Pineapple bit,denticle,slice,Triangle,Bread |
| 3 | Soft rock | Strongly weathered shale,Slate,schist,Slightly cemented sand layer | 6/H | Scraper coreless bit,Concave three wings,slice,Breadslice |
| 4 | A little soft rock | Slate,arenaceous shale,carbonaceous shale,argillaceous marl,calcareous shale | 5/H | scraper,Recessed coreless bit,slice,Bread,Breadslice,Triangle,Electroplated diamond |
| 5 | A little hard rock | Rubble and gravel layer collapse layer,Slate,limestone,Marble,schist | 3/H | Concave three wings,Bread,A helmet piece,Electroplated diamond |
| 6-7 | Medium hardness | Slate,schist,Silicified limestone,Calcite | 2/H | Bread,A helmet piece,Electroplated diamond,Hot pressed diamond,Innovative no.7 fast bit |
| 6-7 | Medium hardness | Slate,schist,Silicified limestone,Calcite | 2/H | Bread,A helmet piece,Electroplated diamond,Hot pressed diamond,Innovative no.7 fast bit |
| 8-9 | Hard layer | Basalt,Quartz anshan porphyry,Fai green rock | 1.2/H | A helmet piece,Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit |
| 10-11 | Super Hard rock | Granite,granodiorite,gneiss,rhyolite,aposandstone | 0.8/H | Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit |
| 12 | Super Hard rock | aposandstone,jasperite,hornberg,corundolite | 0.3/H | Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit |
Apply to:Water Well Drilling/civil engineering and infrastructure/for rock core drilling/geological coring exploration/Soil Testing and sampling /geophysical survey/mineral exploration and other industries.
-WHY CHOSE US-
pearldrill is a leader in the manufacture and development of PDC bits in China. We provide the best quality PDC coring drill to the market, all types of PDC non-coring drill traces. Our drill bits are used for well drilling, mining and construction contractors. Our drill bit has been tested and verified by time, with wear resistance and fast drilling speed. Different drill bits can be customized according to different rock formations. The engineering time is greatly shortened, and the maximum performance is exerted in the operation during drilling. Our products are durable and reliable. Our products are the preferred drill bits for drilling engineers in many countries because of our precise design and efficient drilling during use.
-PAYMENT-
DIY customization: please provide your rock formation information or detailed size drawings.
Free samples: some samples can be provided free of charge.
Trading:EXW, FOB, CFR, CIF, DDU such as.
Payment:T/T L/C,D/A,D/P,Western Union,MoneyGram.
Delivery time: normally 7-12 days
Delivery: there are four main delivery channels including air, sea, express and road transportation, which can be selected according to customers' different requirements.
Air freight logistics:DHL/UPS/EMS/TNT/ FEDEX,etc.
Dear User:
Welcome you to choose and use our products correctly!
The geological drill bit produced by our company has a 6-month warranty period.In case of abnormal scrap such as sheet falling, steel body cracking, lamination of composite sheet, etc., the company may make compensation if the situation is confirmed by the quality department of the company.
If it is one of the phenomena listed in the following table, it shall be deemed as normal scrapping, and the company shall not compensate for it:
1.Drop: Wear no more than 10%, send back for replacement, wear no more than 50%, depending on the situation, steel body cracking: wear no more than 30%, send back for replacement; Wear more than 50%, such as artificial improper crack, do not change.
2.Wrong size or thread: New back for new.
3.Weak solder joints, broken wing pieces, etc. : wear not more than 20%, send back for a new; Wear more than 50%, such as artificial improper operation, do not change.
4.The problem of lamination of composite slices: It depends.
