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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
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;
| No. | Bit Diameter | Type | Part No | |
| inch | mm | Step / Chevron | ||
| 1 | 4 | 102 | S/C | DB4S/DB4C |
| 2 | 4 1/8 | 105 | S/C | DB418S/DB418C |
| 3 | 4 1/4 | 108 | S/C | DB414S/DB414C |
| 4 | 4 1/2 | 114 | S/C | DB412S/DB412C |
| 5 | 4 5/8 | 117 | S/C | DB458S/DB458C |
| 6 | 4 3/4 | 121 | S/C | DB434S/DB434C |
| 7 | 4 7/8 | 124 | S/C | DB478S/DB478C |
| 8 | 5 | 127 | S/C | DB5S/DB5C |
| 9 | 5 1/8 | 130 | S/C | DB518S/DB518C |
| 10 | 5 1/4 | 133 | S/C | DB514S/DB514C |
| 11 | 5 1/2 | 140 | S/C | DB512S/DB512C |
| 12 | 5 5/8 | 143 | S/C | DB558S/DB558C |
| 13 | 5 3/4 | 146 | S/C | DB534S/DB534C |
| 14 | 5 7/8 | 149 | S/C | DB578S/DB578C |
| 15 | 6 | 152 | S/C | DB6S/DB6C |
| 16 | 6 1/8 | 156 | S | DB618S |
| 17 | 6 1/4 | 159 | S | DB614S |
| 18 | 6 1/2 | 165 | S | DB612S |
| 19 | 6 5/8 | 168 | S | DB658S |
| 20 | 6 3/4 | 171 | S | DB634S |
| 21 | 6 7/8 | 175 | S | DB678S |
| 22 | 7 | 178 | S | DB7S |
| 23 | 7 1/8 | 181 | S | DB718S |
| 24 | 7 1/4 | 184 | S | DB714S |
| 25 | 7 1/2 | 191 | S | DB712S |
| 26 | 7 5/8 | 194 | S | DB758S |
| 27 | 7 3/4 | 197 | S | DB734S |
| 28 | 7 7/8 | 200 | S | DB778S |
| 29 | 8 | 203 | S | DB8S |
| 30 | 8 1/8 | 206 | S | DB818S |
| 31 | 8 1/4 | 210 | S | DB814S |
| 32 | 8 1/2 | 216 | S | DB812S |
| 33 | 8 5/8 | 219 | S | DB858S |
| 34 | 8 3/4 | 222 | S | DB834S |
| 35 | 8 7/8 | 225 | S | DB878S |
| 36 | 9 | 229 | S | DB9S |
| 37 | 9 1/8 | 232 | S | DB918S |
| 38 | 9 1/4 | 235 | S | DB914S |
| 39 | 9 1/2 | 241 | S | DB912S |
| 40 | 9 5/8 | 244 | S | DB958S |
| 41 | 9 3/4 | 248 | S | DB934S |
| 42 | 9 7/8 | 251 | S | DB978 |
| 43 | 10 | 254 | S | DB10S |
| 44 | 12 | 305 | S | DB12S |
| 45 | 12 1/4 | 311 | S | DB1214S |
| 46 | 15 | 381 | S | DB15S |
| 47 | 17 1/2 | 445 | S | DB1712S |
Q: Are you original manufacturer? | Q: Which payment terms are available to us? | Q: Which Incoterms 2010 terms can we work? |
A: Yes, we JCDRILL is a official leading manufacture in drilling machinery in China and we have the whole series products you need. | A: T/T term or L/C term. On T/T term, 30% down payment is required in advance, and 70% balance shall be settled before shipment. On L/C term, a 100% irrevocable L/C without "soft clauses" can be accepted. | A: We JCDRILL are a professional and international company, accept all Incoterms 2010 terms, normally we work on FOB, CIF, CFR, CIP. |
Q: How long will the delivery time take? | Q: How about after sales service? | Q:Spare Parts When You Need Them |
A: Normally mud pump products will take about 3-15 days to produce the ordered machines. Most of the time, we can have an immediate delivery of our regular machines in 15 days. | A: 365×24 Year-round Service | A:We have spare parts centers across continents that stock specialist spare parts. We promise that spare parts will be delivered within 72 hours or no more than one week. |
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