Quarry Drilling Tools 171mm 6.5 Inch 3 Wings Step Drag Bits

• Customization: Available
• Transport Package: Cartons + Ply-Wooden Cases for Exporting
• Trademark: Sollroc
• Model NO.: 171mm 3 Wings Step Drag Bits
• HS Code: 84314320
• Production Capacity: 5000pieces/Month

Product Description

Quarry Drilling Tools 171mm 6.5 Inch 3 Wings Step Drag Bits
About us:


We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.Owing to high quality, professional 
serivce and competitive price, we have gotton good reputation from our customers all over the world, such as 
France, Spain, Italy, South Africa, Australia, Iran, Malaysia, etc.
 

Product Application:

The drag bit is designed for use in soft formations such as sand, clay, or some soft rock.Step type bits are the most common type of drag bit used widely for soft to medium formations. Step-type drag bits are very effective in drilling soft and unconsolidated material. They are available in a full range of sizes from 3" to 17 1/2".The design of step-type drag bits provides for fast drilling penetration and requires only moderate drilling weight for proper operation. A large center flushing hole is incorporated into our design for efficient removal of cuttings.

Chevron-type drag bits are recommended for drilling in slightly harder and more consolidated materials. Best suited for abrasive conditions, Chevron-type drag bits are also available in a full range of sizes from 3" up to 17 1/2".The clean design, use of premium tungsten carbide and rugged construction of these fine drilling tools ensures effective performance in a variety of ground conditions.

Product Description

Drag bit is used in soft to medium formation such as sand, clay, or some soft rock for water well drilling, mining, geothermal, environmental and exploration drilling. When the DTH hammer or tricone bit lose their effectiveness and then the drag bit is used, the cleaning of the hole is realized by the injection of air or water. They are not suitable in coarse gravel or hard rock formations.

Size	Thread	Approx.weight (lbs. )
2 3/4 - 3 1/2	N - Rod	3
3 1/2 - 4 3/4	2 3/8" API REG	4 - 6.7
4 7/8 - 5 1/8	2 3/8" API REG	8.4 - 8.7
5 1/4 - 5 1/2	2 3/8" API REG	8.8 - 9.5
5 5/8 - 6	2 3/8 , 3 1/2 API Pin	9.4 - 10.6
6 1/8 - 6 1/4	2 3/8 , 3 1/2 API Pin	10.7 - 17
6 1/2- 6 3/4	2 3/8 , 3 1/2 API Pin	18 - 18.6
5 1/2 - 6 3/4	2 3/8 , 3 1/2 API Pin	19 - 20.5
6 7/8 - 7 7/8	2 3/8 , 3 1/2 API Pin G	21.2 - 22.7
8 - 9	3 1/2, 4 1/2 API Pin	22.8 - 23.4
9 1/8 - 10 7/8	3 1/2, 4 1/2 API Pin	23.6 - 31.3
7 7/8 - 8 7/8	3 1/2, 4 1/2 API Pin	30 - 33.5
9 - 9 7/8	3 1/2, 4 1/2 API Pin G	34.5 - 36
7 7/8 - 9 7/8 (4 wing)	3 1/2, 4 1/2 API Pin	25.6 - 28.2
7 7/8 - 10 (4 wing)	3 1/2, 4 1/2 API Pin G	44.5 - 50.7
10 5/8 -11	3 1/2 4 1/2 API Pin
12 -17 1/2	6 5/8" API REG Pin

Main features

1, All drag bits blades originate from high quality of heat treated alloy steel forgings.;
2, Carbide inserts are individually brazed using 50% nickel silver alloy;
3, Use high grade carbide inserts only;
4, All drag bits are built to the gauge tolerances.
 

Product application

Drag bit is a kind of economic drill bit used in soft formations such as sand, clay, or some soft rock(not well for rough gravel) .

Dia.3" (89mm)~ 17 1/2"(444mm);
Connection threads: 2 3/8'' API Reg, 2 7/8'' API Reg, 3 1/2'' API Reg, 4 1/2'' API Reg, 6 5/8'' API Reg, 2 7/8'' API IF, etc.
Wings: Three wings, four wings;
Type: Chevron and Step type

Product photos:




Quality warranty:

Our hammers are made of high quality steel and all spares are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.


Package:

Using ply-wooden cases and pallet for exporting to protect products and avoid the damagement during transportation. Also we can customize package according to your special requests.

Production time:

Generally, Production time is 15 -25 days.

Transportation:

By air, By Express or By sea according to your requests.