| Ductwork
Rigid Steel Ductwork for Aspiration Systems
Rigid steel ductwork forms the foundation, the "arteries," of any industrial dust collection system. Unlike general ventilation, ducting in aspiration systems is subjected to constant abrasive action: small but hard particles of dust and shavings wear away the metal over time, acting like sandpaper. The durability and reliability of the entire system directly depend on the correct choice of duct specification—primarily, the steel thickness.
Although industrial ductwork is a universal component, achieving the right balance between durability, airtightness, and cost is critical for aspiration tasks.
To build a complete dust collection line, in addition to straight sections, you will need fittings (elbows, tees) to change the direction of flow and flexible ducts to connect to machinery.
The Key Parameter: Steel Thickness
The main factor affecting the lifespan of ductwork in an abrasive environment is its wall thickness. A continuous flow of wood shavings, metal dust, or cement dust will eventually wear through the metal. Using steel that is too thin leads to a risk of premature wear, equipment downtime, and costly repairs.
Recommended Steel Thickness for Round Ductwork in Aspiration Systems
| Duct Diameter, D (mm) |
Recommended Steel Thickness (mm) |
Typical Application |
| up to 200 |
0.5 - 0.6 |
Extraction of light, non-abrasive dust |
| 250 – 450 |
0.6 - 0.7 |
Standard aspiration in woodworking |
| 500 – 800 |
0.7 - 1.0 |
Extraction of large shavings, heavy loads |
| 900 and more |
1.0 - 1.2 |
Main lines, collection of heavy abrasive particles |
Materials
As standard, our ductwork is manufactured from high-quality galvanized steel (DX51D+Z275) or structural carbon steel (S235). For environments with chemically aggressive dust or high humidity, manufacturing from stainless steel is also an option.
Connection Types and Airtightness
Airtightness is the second most important parameter after durability. Any excess air leakage in a vacuum aspiration system reduces its efficiency at the endpoints (at the machines). Our ductwork complies with the European airtightness standard EN 12237.
We manufacture straight duct sections with three end types, which determine their connection method:
- Rolled Edge (PTA) — for quick and flexible connection using quick-connect clamps. Installation is extremely simple: the edges of two elements are joined, and a clamp is latched over them by hand.
- With Welded Flanges (PTF) — for a maximally rigid bolted connection using standard flanges. Installation requires aligning the bolt holes and tightening the bolts evenly in a circular pattern.
- With Swaged End (PTP) — for a simple "pipe-in-pipe" connection that is then secured in place.
The choice of end type depends on the requirements for strength, installation speed, and future system maintenance. We've covered the advantages of flanged vs. clamp-together connections in more detail on the main page of this section.
Custom Manufacturing and Installation
Custom Lengths for Repair and Assembly: As a manufacturer, we are not limited to standard lengths. We will manufacture any ductwork sections to your order. This is especially convenient for repairs when you need to replace a single worn-out section of the line with a part that will be a 1:1 fit.
Professional Installation: SIA "Akvilon" offers professional installation services for aspiration systems. Our specialists ensure the correct assembly of ductwork, sealing of joints, and commissioning to guarantee the designed efficiency of the entire system.
Compliance with EN 12237
All our ductwork is CE marked and complies with the European Construction Products Regulation (CPR 305/2011), which confirms its performance characteristics, including the airtightness class according to the EN 12237 standard.
Ordering and Supply
We manufacture straight duct sections in standard and custom lengths to your requirements. Contact us to calculate and supply your order, or purchase standard items in our e-shop.
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