uncoated countersink step drill bits

Brand Name:M&G Productions P.R.China

Model Number:3001

Place of Origin:P.R.China

HSS CO Countersink With 3/4" Weldon shank, This products is used on Magnetic drill machine for countersinks. With adaptor, this big size countersinks can be used on nomal drilling maching for big hole dedurring.

Brand Name:SOLLROC

Model Number:3"-17" drag bits

Place of Origin:China

Three Wings 3 Blades Step Drag Bits Chevron Drag Bits Step Bits Product specifications: A drag bit is simply a series of blades (usually three or four in number) which produce a shearing action when rotated. They are comparatively inexpensive due to the ...

Brand Name:RanCheng

Model Number:Three Wing Step Drag Bit

Place of Origin:China

...Bit Drilling Rig Tools for Water Well Drilling and Borehole Drilling Product Description Three - wing step drill bits play an important role in water well drilling and borehole drilling. They are uniquely designed and suitable for soft to medium formations under various geological conditions. Compared with other drill bits, they have higher efficiency and performance, can more effectively cope with drilling...

Brand Name:Starry

Model Number:8mm

Place of Origin:JIANG SU CHINA

...Drill Bits High Speed Steel Step Drill Bit Description: Manufactured from Hss-4341 steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67 with 5% Cobalt, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit...

Brand Name:Aoxing

Model Number:2 7/8′′-- 12′′

Place of Origin:Hebei,China

...Step Type Drag Bit For Soil Investigation Detailed Photos 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

Brand Name:SOLLROC

Model Number:254mm Drag Bits

Place of Origin:China

...Drilling Step Drag Bit With Tungsten Carbide For Water Well Drilling Product Introduce Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades.They are usually designed for use in soft formations such as sand, clay, or some soft rock.Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Adavantages Drag bits...

Brand Name:JOHNSON TOOLS

Model Number:D12

Place of Origin:CHINA

... Center Punch Conection Triangle Shank Material HSS 4241 Finishing Titanium Coated Application Metal, Aluminum, Wood drilling Features 1. Strong Durability: coated by titanium, the bits have strong durability.

Brand Name:JOHNSON TOOLS

Model Number:D12

Place of Origin:CHINA

Product Name 5 Pieces HSS CO Step Drill Bit Hex Shank Cobalt Drill Bit Set for Hard Metal Drilling Package 3/16-1/2''(3/16,1/4,5/16,3/8,7/16,1/2) 1/8"-1/2''(1/8,5/32.7/32.1/4,9/32,5/16,11/32,3/8,13/32,7/16,15/...

Brand Name:SOLLROC

Model Number:3"-17" drag bits

Place of Origin:China

... drilling sand bridge, salt bridge, scraping off the dirt of casing wall and hard wax and some mineral crystallization. Still can scraping well hole, making the wall bright and clean, it may used to drilling ahead in bushing and side track (Can destroy the

Brand Name:SOLLROC

Model Number:3 Wings Chevron Drag Bits

Place of Origin:China

...Step Drag Bits For Soft Rock Drilling Products 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...

Brand Name:SOLLROC

Model Number:64mm -305mm Drag Bits

Place of Origin:China

High Quality 64mm-305mm Chevron Step Drilling Drag Bit For Clay Sand Drilling Product Introduce The Chevron style drag bit does not penetrate as fast as the step type, however it will cut harder formations such as medium soft to medium hard sand rock and ...

Brand Name:Betop

Model Number:HS 0210 0000

Place of Origin:PRC

HSS Flat Countersinks DIN373 Standard Countersinks Counterbore With Fixed Guide Countersinkings For Cylinderhead Screws Technical Information: CBN fully deep grounded flutes are with better and sharper as well as burrs-free cutting edges, which guarantees...

Brand Name:JOHNSON TOOLS

Model Number:D12

Place of Origin:CHINA

...Step Core Drill Bits Kit For Metal Drilling Size 5Steps:4-12mm ; 9Steps:4-20mm; 10Steps:3-12mm Conection Hex Shank Quick Release Material HSS 4241 Finishing Titanium Coated Application Metal, Aluminum, Wood drilling Features 1. Strong Durability: coated by titanium, the bits have strong durability. This step drill...

Brand Name:ROSCHEN

Model Number:2 7/8" to 12"

Place of Origin:China

...Bit/Stepped Drag Bit/Tungsten Carbide Drag Bit 1. API or ISO 9001:2008 2. Delivery Date: In 7 work days 3. Delivery term: By air or by sea 4. MOQ: 1 units 5. Brand new 6. Size: 3"-17" 7. Packing: Wooden Case Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades. They are usually designed for use in soft formations such as sand, clay, or some soft rock. Their uses include drilling...

Brand Name:SOLLROC

Model Number:3"-17" diameter

Place of Origin:China

API Thread Three Wings Step Drag Drill Bits with Tungsten Carbides Product specifications: 1) Drag bits are made according to API standard or no thread standard just welding. 2) Various step and chevron drag bits are available from 3 inch to 17 1/2 inch. (...

Brand Name:D•Tycom

Model Number:UCH-10 / UCH-15 / UCH-20 / UCH-25 / UCH-30

Place of Origin:China

...: 0.1 ~ 0.45 Mm Color: Nickel White Coating: Uncoated Generally Feature: 1. Different Types and Diameters 2. Excellent Performance on PCB Drilling 3. Limited Tolerance 4. Free Sample Available 5. Consistent Quality Control 6. Quick Delivery Time 7.

Brand Name:Aoxing

Model Number:55mm,65mm,75mm,94mm,108mm,113mm,133mm, 145mm,153mm,175mm,185mm,193mm

Place of Origin:Hebei,China

... with 4 wings, 3 wings step drag bits tend to drill faster and aggressive, whereas, are shorter lasting and less durable.3 wings alloy scraper bits will produce larger cuttings force than chevron style drag bit. Rotary table speed of step drag bits should

Brand Name:MIROC

Model Number:Conical mining bit

Place of Origin:China

Tungsten Carbide Tips coal mining bit / PDC double wing drill bit According to different purposes, drill bits are classified into cemented carbide bolting drill bits and PDC bolting drill bits applied to coal mining and laneway and tunnel supporting grid, ...

Brand Name:M&G

Model Number:Step Drill

Place of Origin:CHINA

... and Sprial flute Shank Type: 1/4" hex shank Surface Finish: Bright finish/ TiN Coating/TiAlN Coating Features: 1.For drilling cylindrical holes in solid material up to a thickness of

Brand Name:M&G

Model Number:Step Drill

Place of Origin:CHINA

... and Sprial flute Shank Type: 1/4" hex shank Surface Finish: Bright finish/ TiN Coating/TiAlN Coating Features: 1.For drilling cylindrical holes in solid material up to a thickness of