In industrial environments, clean air isn’t just a comfort – it’s a necessity. Whether you’re dealing with dust, fumes, oil, or mist, the performance of your process ventilation system depends heavily on the quality and type of ducting. The wrong ducting system leads to inefficiency, increased costs, and even safety risks.
Laser-welded ducting is a type of ductwork manufactured with precision laser welding technology. After a metal blank is rolled into a cylindrical shape, a high-powered laser beam is directed along the seam where the metal edges meet. The laser melts the edges, which then fuse together as they cool, forming a continuous weld. The result is a seamless, leak-tight, and structurally robust duct suitable for higher-pressure and demanding environments. The smooth interior of laser-welded ducting is a crucial advantage for such applications as timber, textile, or recycling industries, as this type of ductwork enhances safety. With no seams or crevices for dust to accumulate, laser-welded ducting eliminates the risk of debris build-up and blockages — significantly reducing the potential for fires or explosions, and ensuring continuous, reliable operation.
The most common type of spiral (spiro) ducting is lock-formed. Lock-formed ducts are made from spiralled strips of metal mechanically locked together. Such connections, also referred to as crushed seams, can create a slight ridge or indentation along the spiral, which can be a point of concern for air leakage and dust accumulation. While cost-effective, this method also requires more maintenance due to its seam and connections structure. Spiral lock-form ducting differs significantly from laser-welded ductwork: its installation requires screws and joiners that pierce the duct and protrude into the airflow, creating catch points for the dust and mist going through the system. As a result, spiral lock-form ducting can trap debris and cause potential blockages, reducing system efficiency and compromising safety in certain industrial applications. Frequent blockages increase maintenance costs and potentially lead to ignitions, fires, or explosions, as debris can be ignited
by sparks.
In non-critical environments, spiral lock-form ducting may be an acceptable compromise; it is often sufficient for ventilation and air conditioning in office buildings, retail spaces, or community centres. However, it is not recommended for higher-vacuum environments, areas with strict hygiene requirements, or mist and dust applications, as spiral lock-form ducting is more prone to blockages and dust build-up, increasing fire and explosion risk. Nordfab’s Quick-Fit (QF) laser-welded ducting is particularly valuable in applications where durability, cleanliness, and safety are essential – such as
in laboratories, and pharmaceuticals, timber and textile industries, or food and recycling applications. In industries where even minor faults can lead to inefficiencies, contamination risks, or increased
operational costs, laser-welded ducting is the best choice.
Process ventilation may be advanced, and the wrong ducting can compromise safety and efficiency. Spiral lock-form ducting has seams, screws, and joints that create catch points for dust and mist. These buildup zones lead to blockages, reduced airflow, and even ignition hazards — especially in industries like timber, textiles, and recycling.
Lock-formed spiral ducts are cost-effective for non-critical environments like offices or retail spaces. However, in higher-vacuum or dust-heavy applications, they pose serious risks. Uneven seams
trap debris, increase maintenance costs, and can lead to fires or explosions. Spiral lock-form ducting also requires tools and skilled labour for installation, adding complexity and downtime.
Laser-welded ducting offers a smooth, seamless interior that prevents dust accumulation and ensures leak-tight performance. It’s ideal for demanding environments where cleanliness, durability, and
safety are essential. With Quick-Fit (QF) technology, installation is tool-free and fast — making reconfiguration simple and reducing downtime. Plus, its robust design supports sustainability through
reuse without performance loss.
