3 wings step drag bits are one piece construction of alloy steel cast with tungsten carbide cutting tips and gauge sides to ensure longer life.
3 wings step drag bits are economical tools when drilling softer geological formations and shallower depths, they are primarilydesigned for soft tomedium formations, such as Clay, Loam, Silt ,Mostsoft-to-medium soilsthat have some moisture, etc. And also step drag bits are recommended for drilling in Mining, Exploration, Environmental, Water well, Geo Exchange, etc.
Product specification
| 3 wings step drag bit | |||
| Diameter | Thread | Part No. | |
| 2" | 50.8 mm | optional | 3S2 |
| 2 1/2" | 63.5mm | optional | 3S212 |
| 2 5/8" | 66.7 mm | optional | 3S258 |
| 2 3/4" | 69.9 mm | optional | 3S234 |
| 2 7/8" | 73.0 mm | optional | 3S278 |
| 2 15/16" | 74.6 mm | optional | 3S21516 |
| 3" | 76.2 mm | optional | 3S3 |
| 3 1/8" | 79.4 mm | optional | 3S318 |
| 3 1/4" | 82.6 mm | optional | 3S314 |
| 3 1/2" | 88.9 mm | optional | 3S312 |
| 3 5/8" | 92.1 mm | optional | 3S358 |
| 3 3/4" | 95.3 mm | optional | 3S334 |
| 3 7/8" | 98.4 mm | optional | 3S378 |
| 4" | 101.6 mm | optional | 3S4 |
| 4 1/8" | 104.8 mm | optional | 3S418 |
| 4 1/4" | 108.0 mm | optional | 3S414 |
| 4 1/2" | 114.3 mm | optional | 3S412 |
| 4 5/8" | 117.5 mm | optional | 3S458 |
| 4 3/4" | 120.7mm | optional | 3S434 |
| 4 7/8" | 123.8mm | optional | 3S478 |
| 5" | 127.0mm | optional | 3S5 |
| 5 1/8" | 130.2mm | optional | 3S518 |
| 5 1/4" | 133.4mm | optional | 3S514 |
| 5 3/8" | 136.5mm | optional | 3S538 |
| 5 1/2" | 139.7mm | optional | 3S512 |
| 5 5/8" | 142.9mm | optional | 3S558 |
| 5 3/4" | 146.1mm | optional | 3S534 |
| 5 7/8" | 149.2mm | optional | 3S578 |
| 6" | 152.4mm | optional | 3S6 |
| 6 1/8" | 155.6mm | optional | 3S618 |
| 6 1/4" | 158.8mm | optional | 3S614 |
| 6 1/2" | 165.1mm | optional | 3S612 |
| 6 5/8" | 168.3mm | optional | 3S658 |
| 6 3/4" | 171.5mm | optional | 3S634 |
| 6 7/8" | 174.6mm | optional | 3S678 |
| 7" | 177.8mm | optional | 3S7 |
| 7 1/8" | 181.0mm | optional | 3S718 |
| 7 1/4" | 184.2mm | optional | 3S714 |
| 7 3/8" | 187.3mm | optional | 3S738 |
| 7 1/2" | 190.5mm | optional | 3S712 |
| 7 5/8" | 193.7mm | optional | 3S758 |
| 7 3/4" | 196.9mm | optional | 3S734 |
| 7 7/8" | 200.0mm | optional | 3S778 |
| 8" | 203.2mm | optional | 3S8 |
| 8 1/8" | 206.4mm | optional | 3S818 |
| 8 1/4" | 209.6mm | optional | 3S814 |
| 8 1/2" | 215.9mm | optional | 3S812 |
| 8 5/8" | 219.1mm | optional | 3S858 |
| 8 3/4" | 222.3mm | optional | 3S834 |
| 8 7/8" | 225.4mm | optional | 3S878 |
| 9" | 228.6mm | optional | 3S9 |
| 9 1/8" | 231.8mm | optional | 3S918 |
| 9 1/4" | 235.0mm | optional | 3S914 |
| 9 1/2" | 241.3mm | optional | 3S912 |
| 9 5/8" | 244.5mm | optional | 3S958 |
| 9 3/4" | 247.7mm | optional | 3S934 |
| 9 7/8" | 250.8mm | optional | 3S978 |
| 10" | 254.0mm | optional | 3S10 |
| 10 5/8" | 269.9mm | optional | 3S1058 |
| 11 1/2" | 292.1mm | optional | 3S1112 |
| 12" | 304.8mm | optional | 3S12 |
| 12 1/4" | 311.2mm | optional | 3S1214 |
| 12 1/2" | 317.5mm | optional | 3S1212 |
| 13 3/4" | 349.3mm | optional | 3S1334 |
| 14" | 355.6mm | optional | 3S14 |
| 14 3/4" | 374.7mm | optional | 3S1434 |
| 15" | 381.0mm | optional | 3S15 |
| 15 3/4" | 400.1mm | optional | 3S1534 |
| 17 1/2" | 444.5mm | optional | 3S1712 |
Product photos
Related products
| Hammer size | Shank type | Recommended DTH bits diameter | Working pressure |
| 3.5"/3" DTH hammer | COP32, COP34, DHD3.5, MISSION30 | 90mm - 105mm | 8-30 bar |
| 4" DTH hammer | DHD340, QL40, MISSION40, SD4, TD40, COP44, COP44 GOLD, COP42 | 110mm - 130mm | 8-30 bar |
| 5" DTH hammer | DHD350, QL50, MISSION50, SD5, TD50, COP54, COP54 GOLD | 134mm - 152mm | 8-30 bar |
| 6" DTH hammer | DHD360, QL60, MISSION60, SD6, TD60, COP64, COP64 GOLD, COP66 | 152mm - 203mm | 8-30 bar |
| 8" DTH hammer | DHD380, QL80, MISSION80, SD8 | 203mm - 305mm | 8-30 bar |
| 10" DTH hammer | SD10, Numa100 | 240mm - 311mm | 17-24 bar |
| 12" DTH hammer | DHD112, SD12, QL120, Numa120 | 311mm - 445mm | 17-24 bar |
What we do
| Down The Hole rock drilling tools | Top hammer rock drilling tools | Self drilling anchor system | Drag bits |
 |  |  |  |
| - DTH hammers - DTH bits - DTH drill pipes - Odex and Symmeric drilling | - Taper drill bits and rods - Threaded buttons bits and drill rods - Shank adapters - Couplings | - Threaded hollow anchor bars. - Accessories ( drill bit, coupling, nut, plate, centralizer etc.) | - Step drag bit (3 wings, 4 wings ) - Chevron drag bit (3 wings, 4 wings ) |
| Application | Application | Application | Application |
| Mining, quarry, water well drilling, geothermal drilling, construction foundation work etc. | Mining, quarry, construction foundation work | tunnel roof support, slop stability, Soil nailing, rock bolting, micropile etc. | mining, water well drilling, geothermal drilling etc. |
Our company
Our Workshop
FAQ
Q1: Are you a manufacturer?
A1: Yes, we own 2 plants to manufacture various drilling products, including TH (top hammer) drilling products, DTH drilling products, self-drilling anchor systems and drag bits.
So we are a one-stop supplier of full range of rock drilling products.
Q2: What qualifications do you have?
A2: Till 2016, we have following qualifications:
- ISO 9001:2008 quality management system;
- 3AA2 credit rating by Dun & Bradstreet;
- Honoring Contract and Keeping Promise Enterprise by AIC;
- EC examination certificate for self-drilling anchor bars;
- 2 invention patents & 6 utility patents.
Q3: Where did you export and what was your annual export amount?
A3: Till 2020 we have exported to 105 countries and our average annual export amount within recent 3 years is 30 million USD.
Q4: What kind of payment terms do you offer and what is your best payment terms?
A4: We offer different payment terms, including T/T, D/A, D/P, L/C and O/A, etc. Our best payment terms is 120 days after shipping date for our distributors and sole distributors.
Q5:Do you offer warranty on your products?
A5: Yes, for different products we offer different warranty that cover all manufacturing defects in materials and workmanship. The longest period of warranty is 2 years after shipping date.
Q6: Do you offer OEM service?
Q6: Yes, we offer OEM service if you have regular requirement.
A1: Yes, we own 2 plants to manufacture various drilling products, including TH (top hammer) drilling products, DTH drilling products, self-drilling anchor systems and drag bits.
So we are a one-stop supplier of full range of rock drilling products.
Q2: What qualifications do you have?
A2: Till 2016, we have following qualifications:
- ISO 9001:2008 quality management system;
- 3AA2 credit rating by Dun & Bradstreet;
- Honoring Contract and Keeping Promise Enterprise by AIC;
- EC examination certificate for self-drilling anchor bars;
- 2 invention patents & 6 utility patents.
Q3: Where did you export and what was your annual export amount?
A3: Till 2020 we have exported to 105 countries and our average annual export amount within recent 3 years is 30 million USD.
Q4: What kind of payment terms do you offer and what is your best payment terms?
A4: We offer different payment terms, including T/T, D/A, D/P, L/C and O/A, etc. Our best payment terms is 120 days after shipping date for our distributors and sole distributors.
Q5:Do you offer warranty on your products?
A5: Yes, for different products we offer different warranty that cover all manufacturing defects in materials and workmanship. The longest period of warranty is 2 years after shipping date.
Q6: Do you offer OEM service?
Q6: Yes, we offer OEM service if you have regular requirement.