Changsha Sollroc Engineering Equipments Co., Ltd
                                                                                                           
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203mm Drag Drill Bit Three Wings API 3 1/2" Step Drag Bits For Ming Drilling

Price Negotiable
Price: USD 50-500
MOQ: 1 piece
Delivery Time: 15-25 working days
Brand: SOLLROC
Product Description

 

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.

 

Step type for soft grounds, Step type bits are the most common type of drag bit used in the world today. They are primarily designed for soft 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
 

Thread 2 3/8" IF, 2 7/8" IF is available. Step type with 4 wings is available.

 

 

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

 

 

Packaging and shipping

 

Packaging: Carton+plywood case or as request.

Shipping: By air, by sea, by express as request.

 

 

Company profile

 

Sollroc , with more 10 years of experience ,is one of the professional manufacturer and supplier of high performance rock drilling tools like: DTH hammers and bits, RC hammers and bits, DTH drill rods and top hammer drilling tools. Our tools are widely used in different drilling applications including mining, quarrying, water well drilling, geotechnical industries and etc.

 

Sollroc is specialized in designing, manufacturing and developing equipments and accessories for standard models as well as the special needs of clients and provides them with the best suggestions and solutions. We practice strict and stringent quality control during manufacturing and adhered to recognized and approved quality control systems. Each of our products follows the quality requirements and procedures to ensure finished products are durable and superior up to standard.

 

We are dedicated to offering our customers only premium quality products and services to enable them to achieve the highest possible productivity for their business and projects. If you are looking for the best, fastest and most productive drilling tools in the world, Sollroc should be your best choice and preference.

 

 

 

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Changsha Sollroc Engineering Equipments Co., Ltd
Location No55. Jiucaiyuan road, Furong District, Changsha, Hunan,China
Contact Person Ling Bo

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