VENTECH's Duct Insulation Cutter

Actually, the duct cutting machine manufacturer consistently pays careful attention to the properties of raw materials. It is the combination of raw materials and advanced technology which makes ideal item. When the producer is selecting raw materials, many indexes are considered and analyzed. If the raw materials have been processed, production technology is a key way to maximize its properties and functions.

Since its inception, YINGDE VENTECH INTELLIGENT EQUIPMENT CO., LTD. remains dedicated to the production, R&D and sales of Grilles and diffuser production machine. We will show you the automatic machine series that is most popular with customers. VENTECH automatic machine is manufactured under various advanced facilities. They involve fabric cutting M/C, sewing M/C, hemming M/C, flatlock M/C, electric/steam iron M/C, and so on. Its high-speed motor guarantees its high productivity. The product is characterized by its hygiene. It is made of anti-bacterial materials that are effective in eliminating germs and bacteria-caused odor. The dust will be not easy to accumulate on this product.

It is our determination to create VENTECH to be the leading Grilles and diffuser production machine manufacturer. Inquire online!

We take pride in our products, and we ensure you insulation cutting table receives serious QC test before shipping. Yet if the last thing we expect happened, we will either refund you or send you the replacement after we receive the returned damaged item. Here we always promise to bring you the best quality products in a timely and efficient manner. Don't hesitate to contact our Customer Service if any issue occurred.

In this competitive society, YINGDE VENTECH INTELLIGENT EQUIPMENT CO., LTD. is one of the reliable suppliers of automation equipment. We have the experience and expertise needed to manufacture products. VENTECH INTELLIGENT EQUIPMENT has created a number of successful series, and PPPP is one of them. By adopting the lean production method, VENTECH automation equipment is exquisite in detail. The components of this product can be disassembled with little effort. Being highly customizable, this product will help promote the good or a brand to the public. It can create brand awareness for potential customers, which will bring more sales. The product has the ability to generate repeated accuracy.

We are not focused on competing with other companies. We determine the market standard. This fact holds true when it comes to the characteristics and qualities of our individual products.

Ventilation duct occupies a more important position in ventilation and air conditioning. It has a large construction area, a long construction period, and a relatively large proportion of the total cost. For budgeting work, the amount and price of ventilation ducts will consume a lot of time and energy from budget staff. Therefore, we must be familiar with the relevant regulations.

Section 1 Explanation of terms:
1. Air vents — air intake and exhaust ducts made of brick, concrete, slag gypsum board, and wooden materials are generally constructed by civil engineering teams and do not belong to the scope of installation projects.
2. Air duct — round or rectangular pipe made of sheet metal, polyvinyl chloride sheet or glass fiber reinforced plastic sheet. Phenolic series composite air ducts include: double-sided aluminum foil composite phenolic ducts, single-sided color steel phenolic ducts, double-sided color steel phenolic ducts, galvanized embossed phenolic composite ducts, etc.
3. Pipe fittings — pipe components that connect pipes of different pipe diameters or different directions. Pipe fittings include elbows, tees, crosses, reducers, sky-circle, flanges, guide vanes, etc.
4. Guide vane — a partition plate installed inside the air duct to reduce the influence of turbulence, noise and pressure drop. According to specifications, when the size of duct elbow A is greater than or equal to 500mm, guide vanes should be provided. The area of guide vanes can be calculated by formula method or look-up table method. Because the general construction drawings do not give detailed drawings of the guide vanes, we mostly use the look-up table method for calculations.
5. Canvas interface — It is used for the connection between the inlet and outlet of the fan and the air duct. Those who use artificial leather instead of canvas shall not be converted.

Section 2 Three major elements of duct production and installation:
In the production and installation of the air duct, the three elements of the interface form of the air duct, the thickness of the steel plate used for the air duct and the cross-sectional size of the air duct are determined, and the cost of the air duct is also determined. Therefore, these three elements are also called the three elements.
1. The interface form of the air duct
There are two types of joints for the air duct: welding and snapping (riveting is relatively less used, and it has been comprehensively considered within the quota, so it will not be introduced separately).
Bite: Bite is a connection between ducts or steel plates. It uses the folding of the steel plate to realize the connection. Common forms of bite are: single bite, vertical bite, corner bite, joint angle bite, and snap bite. Among them, the splicing of the plates and the circular duct can adopt a single bite, the circular duct can adopt a vertical bite, and the rectangular duct or accessories can adopt a corner bite, a joint angle bite, and a snap-type bite.
The interface form is determined in principle according to the design regulations. If there are no regulations in the design, it can be selected according to the following principles.
(1) When the thickness of the steel plate is less than or equal to 1.2mm, snapping can be used;
(2) When the thickness of the steel plate is more than 1.2mm, welding can be used;
(3) If the duct is made of galvanized steel sheet, biting or riveting shall be adopted.

2. The thickness of the steel plate
The thickness of the steel plate for the production of the thin steel plate air duct shall in principle be subject to the design specification. If the design is not specified, it can be selected according to the national standard (GB50243-2002).

3. The cross-sectional size of the duct
Commonly used air duct cross-sectional dimensions are rectangular and circular. The dimensions on the drawing are indicated. The outer diameter of the circular duct shall prevail, and the length of the outer side of the rectangular duct shall prevail.
The calculation formula for the area of circular duct and rectangular duct is as follows:
Circular duct area S=×πDL
Rectangular duct area S=2L (A+B)
About above:
π —— Pi (3.14159)
D —— Outer diameter of circular duct
L —— length of duct
A ——Rectangular duct side length (visible surface on the drawing)
B ——Rectangular duct side length (invisible surface on the drawing)
The interface form, the thickness of the steel plate and the cross section (perimeter or diameter) of the duct are the three major elements for selecting the quota sub-item. In principle, these three elements must be satisfied at the same time when selecting the quota sub-item.

Section 3 The cutting job of ducts:
On the market, we can see many kinds of traditional cutting tools, saw, manual blades, etc. These tools are useful and less expensive, but they require huge man power and are time consuming. In the modern HVAC industry, more and more companies and factories have started to use machinery and automation to reduce labor. We can find make kinds of cutting machine on the market too. What you need to find is specifically for cutting ductwork, which will highly increase your efficiency.
For galvanized ducts, you have metal duct laser cutting machine. For PI ducts, you have PI duct cutter. For thermal insulation cotton, you have insulation cutting machine. All you need will find a solution. We always pursuit high quality and professional work.
We have introduced the basic situation of the production and installation of steel ducts. In actual construction, there are also ducts made of other materials (such as aluminum, stainless steel, and glass steel). The construction methods, acceptance specifications and The selection of quotas all have their own characteristics. We cannot make generalizations, but should pay attention to their corresponding regulations.

Do you know more about the Pre-insulated duct?


Manufacture of Pre-insulated ducts
Compared with other traditional methods (such as CAPS method), this method has obvious advantages:
More accurate.
Strength and quality.
Reduce load loss.
Better completion.
Reduce waste


The CLIMAVER duct This company is the main representative and distributor of the international Pre-insulated duct market. This panel has a unique housing with marked guidelines, which helps cut and eliminates the risk of drawing errors.
The manufacturing of different shapes and linear segments of the duct network starts with drawing different parts on the panel, and then cutting and assembling by using a small number of light tools that are easy to operate.
Cutting: CLIMAVER tool makes grooves in the form of "half wood", bends the panel at an angle of 90 °, and when you use the tool to cut, they will pull out the cut.
A reference is marked on the panel, which is used to place the guide ruler of the support bracket. After cutting the coating with a double-edged knife or other operations (such as cleaning the valve), it is cut with the moving of the tool.





Maintenance methods for Fiberglass Duct
-Contact suction: It is carried out through the opening in the duct, with the minimum risk of damage to the surface. The head of the vacuum cleaner enters the duct through the opening closest to the start. Then the machine starts. Inhalation will continue the process of airflow, collecting all dirt.
-Pressure air cleaning: the vacuum cleaner is connected at the opening of the duct and is located at an end point downstream of the duct. It is recommended that the insulation area of the cleaned duct line circuit have a static pressure of at least 25 mm. c.a. to ensure the correct transportation of separated materials. Compressed air is introduced into the duct through a hose provided by a "jumper" nozzle at one end. The nozzle is designed to allow compressed air to flow along the inside of the duct. In this way, the waste is discharged, and the waste floating in the air is dragged downstream from the duct and removed from the duct under the action of a vacuum cleaner.
The compressed air source must be able to generate between 11kg/m2 and 13.5kg/m2, and there must be a 70L collection bucket. The air washing method is effective.


The invention relates to an air purification method with brush pressure: in an air purification system, a dust suction device is connected to the extreme end of the downstream duct line through an opening. To remove dust and dust particles that are then suspended in the air, use an electric or pneumatic rotary brush. The dust particles are sucked in through the internal duct along the direction of air flow, and then discharged by the vacuum cleaner.
Mechanical planing usually requires a larger channel opening than the previous method, but requires fewer openings. The mechanical brush can reach 7m in both directions of the opening.


Harm and Prevention of GlassFiber Duct
Impact on health
The use of glass fibers in the form of fibers or powders may irritate the eyes, nose, throat and skin. The International Agency for Research on Cancer (IARC) has listed glass wool as a possible carcinogen for human beings.
Protection and precautions
The employer must establish safe working procedures (ventilation, excavation, etc.) to minimize the risks.
However, in the closed or narrow space where these products are usually installed, the fiber content in the environment is usually high and difficult to control. In this case, workers should be provided with personal protective equipment: appropriate masks, work clothes and gloves.
The same precautions should be taken in the cutting and sanding of fiberglass filament products.



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