Tungsten Carbide Extra Long Masonry Drill Bits for Metal

• Customized: Customized
• Standard: GB
• Length: Taper-length
• Type: Twist Drill Bit
• Material: Solid Carbide
• Usage: Masonry Drilling
• Model NO.: Various
• Product Type: Straight Shank Twist Drill
• Use: Drilling Masonry / Concrete / Brick
• Surface: Ground
• OEM: Acceptable
• Transport Package: in Carton
• Specification: Customized
• Trademark: M&J
• Origin: Hunan
• Production Capacity: 10000000PCS/Year

Product Description

Product Description

Tungsten Carbide Extra Long Masonry Drill Bits For Metal

Tungsten carbide twist drill bit is the type produced in largest quantity today. It comprises a cutting point at the tip of a cylindrical shaft with helical flutes; the flutes act as an Archimedean screw and lift swarf out of the hole.

The twist drill bit was invented by Steven A. Morse of East Bridgewater, Massachusetts in 1861.The original method of manufacture was to cut two grooves in opposite sides of a round bar, then to twist the bar (giving the tool its name) to produce the helical flutes. Nowadays, the drill bit is usually made by rotating the bar while moving it past a grinding wheel to cut the flutes in the same manner as cutting helical gears.

Twist drill bits range in diameter from 0.002 to 3.5 in (0.051 to 89 mm) and can be as long as 25.5 in (650 mm).
 

Product Item Name	Carbide Tipped Twist Drill Bit
Tip Material	Tungsten Carbide
Diameter	4-40mm, customized length is available
Process	Milled flutes and welded tip
Application	Drilling masonry, concrete, brick and so on.
Process	Welding

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Detailed Photos

 

Packaging & Shipping

Our Packaging

 
Our Shipping 
We mainly choose the following delivery ways: 
Shipment: by Express/ by Air /by Sea
We can arrange shipment according to our customers' requests.
If there is any problem related to the shipping, please feel free to contact us. 

Our Services

1. We will try our best to reply our customers' requests within 24 hours.

2. We will maintain effective and efficient communications with our customers.

3. We provide first-class quality control and after-sale services.

Quality Control
* We will inspect and test all products after finishing production and before delivery.
* We can provide dimension & inspection certificate as customers' requirements.
* We also can provide customers' samples dimensional verification. 

Photos of Tungsten Carbide Equipments