Beijing Jincheng Mining Technology Co., Ltd.
| Payment Terms | T/T, Western Union, MoneyGram, L/C |
| Supply Ability | 100000 pcs/year |
| Delivery Time | 5-7 days |
| Packaging Details | Standard Export Packaging |
| Material | Carbon Steel |
| Product Name | Drag Bit |
| Processing type | Forging |
| Application | Water Well Drilling |
| Production Time | 5-7days |
| Diameter | 150-445mm |
| Brand Name | JCDRILL |
| Model Number | 5-17 inch |
| Certification | ISO,CE |
| Place of Origin | Hebei,China |
View Detail Information
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Product Specification
| Payment Terms | T/T, Western Union, MoneyGram, L/C | Supply Ability | 100000 pcs/year |
| Delivery Time | 5-7 days | Packaging Details | Standard Export Packaging |
| Material | Carbon Steel | Product Name | Drag Bit |
| Processing type | Forging | Application | Water Well Drilling |
| Production Time | 5-7days | Diameter | 150-445mm |
| Brand Name | JCDRILL | Model Number | 5-17 inch |
| Certification | ISO,CE | Place of Origin | Hebei,China |
| High Light | water well drilling parts ，drill bit connector | ||
API Standard Drilling Tools 8 Inch Drag Drill Bits For Water Well Drilling
Application
The drag bit is the oldest rotary tool still used by the drilling industry. These bits are currently manufactured in several different designs with various cutler blade quantities and shapes. The cutting blades arc integrally made with the bit body or are fixed to it and rotate as a unit with the drillstem. This bit is used primarily in soft and gummy formations. Optimum performance is attained by arranging the hydraulic equipment and selecting nozzle sizes so maximum available hydraulic horsepower is expended at the bit.
Chevron Drag Bit
Drill more abrasive formations, like soft sandstones and shales, with a chevron drag bit.
The cutting structure is more durable than the step drag bit but will also penetrate more slowly.
For best drilling results, maintain rotary table speeds between 50 and 60 rpm with light to medium weight on bit (WOB). Harder formations require more WOB.
Characteristics
All sizes are generally 3 wings and standard design;
Any size of 4 wings or chevron type is upon customer’s request;
All sizes connection type are AROD,NROD or standard API thread;
Any special size and design is upon customer’s request.
Drag bits diameter:76mm to 445mm;
Step Drag Drill Bits thread sizes: :2 3/8” API Reg, 3 1/2” API Reg, 4 1/2” API Reg, 6 5/8” API Reg, etc;
Specification
| No. | Bit Diameter | Bit Design | Type | Part No |
| inch | mm | Step / Chevron | ||
| 1 | 2 1/2〞 | 64 | S/C | DB212S/DB212C |
| 2 | 2 3/4〞 | 70 | S/C | DB234S/DB234C |
| 3 | 2 15/16〞 | 75 | S/C | DB21516S/DB21516C |
| 4 | 3〞 | 76 | S/C | DB3S/DB3C |
| 5 | 3 1/8〞 | 79 | S/C | DB318S/DB318C |
| 6 | 3 1/4〞 | 83 | S/C | DB314S/DB314C |
| 7 | 3 1/2〞 | 89 | S/C | DB312S/DB312C |
| 8 | 3 5/8〞 | 92 | S/C | DB358S/DB358C |
| 9 | 3 3/4〞 | 95 | S/C | DB334S/DB334C |
| 10 | 3 7/8〞 | 98 | S/C | DB378S/DB378C |
| 11 | 4〞 | 102 | S/C | DB4S/DB4C |
| 12 | 4 1/8〞 | 105 | S/C | DB418S/DB418C |
| 13 | 4 1/4〞 | 108 | S/C | DB414S/DB414C |
| 14 | 4 1/2〞 | 114 | S/C | DB412S/DB412C |
| 15 | 4 5/8〞 | 117 | S/C | DB458S/DB458C |
| 16 | 4 3/4〞 | 121 | S/C | DB434S/DB434C |
| 17 | 4 7/8〞 | 124 | S/C | DB478S/DB478C |
| 18 | 5〞 | 127 | S/C | DB5S/DB5C |
| 19 | 5 1/8〞 | 130 | S/C | DB518S/DB518C |
| 20 | 5 1/4〞 | 133 | S/C | DB514S/DB514C |
| 21 | 5 1/2〞 | 140 | S/C | DB512S/DB512C |
| 22 | 5 5/8〞 | 143 | S/C | DB558S/DB558C |
| 23 | 5 3/4〞 | 146 | S/C | DB534S/DB534C |
| 24 | 5 7/8〞 | 149 | S/C | DB578S/DB578C |
| 25 | 6〞 | 152 | S/C | DB6S/DB6C |
| 26 | 6 1/8〞 | 156 | S | DB618S |
| 27 | 6 1/4〞 | 159 | S | DB614S |
| 28 | 6 1/2〞 | 165 | S | DB612S |
| 29 | 6 5/8〞 | 168 | S | DB658S |
| 30 | 6 3/4〞 | 171 | S | DB634S |
| 31 | 6 7/8〞 | 175 | S | DB678S |
| 32 | 7〞 | 178 | S | DB7S |
| 33 | 7 1/8〞 | 181 | S | DB718S |
| 34 | 7 1/4〞 | 184 | S | DB714S |
| 35 | 7 1/2〞 | 191 | S | DB712S |
| 36 | 7 5/8〞 | 194 | S | DB758S |
| 37 | 7 3/4〞 | 197 | S | DB734S |
| 38 | 7 7/8〞 | 200 | S | DB778S |
| 39 | 8〞 | 203 | S | DB8S |
| 40 | 8 1/8〞 | 206 | S | DB818S |
| 41 | 8 1/4〞 | 210 | S | DB814S |
| 42 | 8 1/2〞 | 216 | S | DB812S |
| 43 | 8 5/8〞 | 219 | S | DB858S |
| 44 | 8 3/4〞 | 222 | S | DB834S |
| 45 | 8 7/8〞 | 225 | S | DB878S |
| 46 | 9〞 | 229 | S | DB9S |
| 47 | 9 1/8〞 | 232 | S | DB918S |
| 48 | 9 1/4〞 | 235 | S | DB914S |
| 49 | 9 1/2〞 | 241 | S | DB912S |
| 50 | 9 5/8〞 | 244 | S | DB958S |
| 51 | 9 3/4〞 | 248 | S | DB934S |
| 52 | 9 7/8〞 | 251 | S | DB978 |
| 53 | 10〞 | 254 | S | DB10S |
| 54 | 12〞 | 305 | S | DB12S |
| 55 | 12 1/4〞 | 311 | S | DB1214S |
| 56 | 15〞 | 381 | S | DB15S |
| 57 | 17 1/2〞 | 445 | S | DB1712S |
Packing& Delivery
FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
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4. After Sales Service
Free replacement will provide once the failure confirmed caused by our product quality.
Company Details
Business Type:
Manufacturer,Seller
Year Established:
1992
Total Annual:
30 Million-40Million
Employee Number:
>300
Ecer Certification：
Active Member
Beijing Jincheng Mining Technology Co.,Ltd(JCDRILL) located in Beijing,China, for more than 20 years we have specilized in research, development and produce of rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories & drilling... Beijing Jincheng Mining Technology Co.,Ltd(JCDRILL) located in Beijing,China, for more than 20 years we have specilized in research, development and produce of rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories & drilling...
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