Step-Type Drag Bits of Three-Wing and Four-Wing
ROSCHEN is a professional manufacturer of drilling tools, the products include three series with full model types:
Drilling Bit: rock roller bit, tricone bit, pdc drill bit, single bit, cone bit and hole opener;
Well head tools: manual tong, elevator, slips, stabilizer;
Workover Fishing Tools: releasing spear, junk basket, overshot, reversing sub, die collar, fishing tap etc.
By the hard efforts and united cooperation, we have established a wide sales network. We work hard for excellent quality, better price and perfect service.
Step-Type Drag Bits
Step-type drag bits come in a variety of wing counts, steps, and sizes to accommodate drilling in a variety of formations, from sand and clay to shale, limestone, gravel, and more.
Three-Wing and Four-Wing - Three-wing bits tend to drill faster, whereas four-wing bits are longer lasting, more durable, and drill a straighter hole.
Regular Step and Heavy Step - Regular Step bits develop smaller cuttings, whereas Heavy Step bits are more durable and are used in harder formations. Heavy Step bits have longer and wider steps and contain larger carbide for cutting. The quantity of steps is largely determined by the size of bit.
Chevron-Type Drag Bits
Chevron-type drag bits are recommended for drilling in slightly harder and more consolidated materials than step-type drag bits, such as hard shales, limestones, and unconsolidated gravels.
Bits Stock Sizes Available Stock Threads
Three-Wing and Four-Wing Chevron 3 7/8" - 26" ; 2 3/8", 2 7/8", 3 1/2", 4 1/2", 6 5/8" API regular pin
Three-Wing and Four-Wing Chevron Kelly Bit 3 7/8" - 26" MHJR, MHR, FEDP, IF
Drag bits size:
| Size |
Number of Blades |
Cutter Size |
API Connection |
| 5 1/2" |
3 Blade |
13mm |
2 7/8" API REG |
| 5 5/8" |
3 Blade |
13mm |
2 7/8" API REG |
| 5 5/8" |
3 Blade |
13mm |
3 1/2" API REG |
| 5 7/8" |
Flat Face |
13mm |
3 1/2" API REG |
| 5 7/8" |
5 Blade |
13mm |
3 1/2" API REG |
| 6" |
5 Blade |
13mm |
3 1/2" API REG |
| 6 1/8" |
5 Blade |
13mm |
3 1/2" API REG |
| 6 1/4" |
5 Blade |
13mm |
3 1/2" API REG |
| 6 1/2" |
5 Blade |
13mm |
3 1/2" API REG |
| 6 3/4" |
5 Blade |
13mm |
3 1/2" API REG |
| 7 7/8" |
5 Blade |
13mm/16mm |
4 1/2" API REG |
| 7 7/8" |
6 Blade |
13mm/16mm |
4 1/2" API REG |
| 8 1/2" |
5 Blade |
13mm/16mm |
4 1/2" API REG |
| 8 1/2" |
6 Blade |
13mm/16mm |
4 1/2" API REG |
| 8 3/4" |
5 Blade |
13mm/16mm |
4 1/2" API REG |
| 8 3/4" |
6 Blade |
13mm/16mm |
4 1/2" API REG |
| 9 7/8" |
6 Blade |
16mm |
6 5/8" API REG |
| 12 1/4" |
6 Blade |
16mm |
6 5/8" API REG |
Our services:
1.We will keep track of each customer to get the feedback of product quality and service. And we will make an improvement according to your feedback.
2.If the product size is wrong, we will send the right one freely.
3.We guarantee the high quality. Please feel free to contact us if you found any damage. We will solve the problems ASAP.
4.We can provide product repair services.
FAQ
1. How to order the products?
Send the inquiry with detail item description or with Model number.
If there is no packing demand we take it as sea-way packing.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. About lead time and shipping time?
The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.
3.Can I expect a quality products?
Yes. All our activities are accredited to API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
Factory:
We are a Robert Roschen family owned Global leading manufacturer of rock drilling tools, like Roller Tricone Rock Bits, Hole Opener, Single Cone Roller Bits, PDC Bits, Diamond PCD Tricone Drill Bits, DTH Drilling Tools, such as DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Germany, China(joint-venture).
We have rich experience in this field of Roller Tricone Bits, PDC Drill Bits, Oil Drilling Toosl, Rock Drilling tools, DTH hammers and bits for 60 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as US, Canada, France, Spain, Italy, South Africa, South Latin Amercia, Brasil, Saudi Arabia, UAE, Iran, Malaysia, Australia, etc.
For more information please contact:
http://roschen.en.made-in-china.com
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