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[China]
Trade Verify
Address: Room 1407,BuildingA,No.13,Beiyuan Road,Chaoyang District,Beijing,China
Contact name:Sekura Yu
Beijing Jincheng Mining Technology Co., Ltd. |
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Verified Suppliers
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3 Wings Step Drag Bits for Soft Formation Water Well Mud Drilling 8 inch
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;
Application
8'' Three wings step drag bit is mainly used for water wells,
mining, geothermal, environmental and exploration drilling. It is
suitable for drilling in soft and soft-medium formations with fast
penetration rate and high efficiency, and special for the large
diameter holes’ drilling.
Types: Ordinary type; Reinforced type; Super strength type.
Threads: Any female or male threads.
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
Service
In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.
We provide "one equipment & one case, endless service, namely
the after sales service begin from the order confirmation, last for
the working life of the equipment.
