13' X 4 1/2' API Reg Thread 4 Wings Step Drag Drill Bits 330mm
China 13′′ X 4 1/2′′ API Reg Thread 4 Wings Step Drag Drill Bits 330mm, Find details about China Drag Bit, Rotary Drill Bit from 13′′ X 4 1/2′′ API Reg Thread 4 Wings Step Drag Drill Bits 330mm
Basic Info.
Drilling Type
Rotary
Quality
You Deserve The Best
Rock Formation
Soft. Sand, Clay, Shale, Gravel, Limestone ...
Trademark
SINODRILLS
Transport Package
Plywood Box
Specification
311mm 12 1/4′′
Origin
China
HS Code
8207199000
Drilling Type
Rotary
Quality
You Deserve The Best
Rock Formation
Soft. Sand, Clay, Shale, Gravel, Limestone ...
Trademark
SINODRILLS
Transport Package
Plywood Box
Specification
311mm 12 1/4′′
Origin
China
HS Code
8207199000
Product Desciption
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.
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