Hole Saws (long type) , Metal Hole Saw,

• Customization: Available
• Customized: Customized
• Standard: DIN, AISI
• Model NO.: 290mm
• Length: Taper-length
• Type: Core Drill Bit
• Material: High Speed Steel
• Usage: Metal Drilling
• Transport Package: Box
• Specification: 290
• Trademark: ALSTON
• Origin: China
• HS Code: 8207509000
• Production Capacity: 100000
• Package Size: 33.00cm * 23.00cm * 15.00cm
• Package Gross Weight: 15.000kg

Product Description

A metal hole opener is a tool used to cut circular or other shaped holes on metal sheets, pipes or other metal materials. Its main functions and application scenarios are as follows:

1. Precision hole opening
Function: Cut holes of precise size on the metal surface, and the hole diameter usually ranges from a few millimeters to tens of centimeters.

Application: Suitable for pipeline installation (such as water pipes, cable threading holes), mechanical processing, metal structural parts manufacturing, etc.

2. Efficient cutting
Function: Rapid hole opening by rotary cutting or punching, which is more efficient than traditional drilling and is especially suitable for batch processing.

Tool type:

Rotary hole opener: Used with an electric drill or bench drill, it uses a high-speed rotating cutting blade (such as alloy steel or carbide blade) to cut metal.

Hydraulic/electric punching machine: Directly punches and forms by pressure, suitable for thinner metal plates (such as steel plates and aluminum plates).

3. Adapt to different materials
Applicable materials: Can handle metals such as steel, stainless steel, aluminum, copper, and some high-hardness hole openers can also cut cast iron.

Thickness range: Depending on the strength of the tool, it can cut metals with thicknesses ranging from 0.5mm to more than 10mm.

4. Multiple hole diameters and shapes
Standard round holes: The most common function, used for bolt fixing, pipe connection, etc.

Special-shaped holes: Some hole openers can cut square, hexagonal or special contour holes (custom molds or special tools are required).

5. Reduce material deformation
Advantages: Compared with traditional drilling, hole openers (especially punching types) can reduce burrs and material edge deformation and improve the finish of the hole wall.

6. Portability and flexibility
Handheld tools: Small hole openers can be used with hand drills, which are suitable for on-site construction or maintenance.

Fixed equipment: Large punching machines are used for factory assembly line processing.

7. Cooling and lubrication compatibility
Design features: Some hole openers support the addition of cutting fluid or lubricating oil to reduce cutting temperature and extend tool life (especially for difficult-to-process materials such as stainless steel).

Typical application scenarios
Industrial manufacturing: mechanical parts processing, sheet metal hole opening.

Building installation: ventilation ducts, cable tray opening.

Automotive maintenance: exhaust pipes, body panel modification.

DIY projects: metal furniture, decoration production.

Precautions
Safety protection: wear goggles and gloves to prevent metal debris from splashing.

Matching speed: adjust the speed of the electric drill according to the hardness of the metal and the hole diameter to avoid burning the tool.

Regular maintenance: clean the tool and replace the worn tool head in time.

By choosing the right type and specification of metal hole opener, the processing efficiency and quality can be significantly improved.
Bi-Metal Hole Saw, Hole Saw, Hole Saw Set

Specifications

Materials available for Bi-Metal is M3 and M4 High Speed Speed Steel for accruate hole in machniable materials.

Cutting Depth reach to38mm/44mm Thick.

Diameter range from14mm to210mm.

This tool is used for portable electric, air tools, drill presses, lathes, boring mills, milling machine or any other machine which has a roating spindle.

Teeth have 4/6 vari-pich is better to cutting steel and cast iron pipe, steel plates, alumimium, copper, brass, stainless steel, wood and plastics.