High-Strength Spiral Ducting: Circular Galvanised Steel Solutions
BritSOLIDS provides a comprehensive range of Spiral Ducting and Spiral Seam Pipes engineered for high-efficiency air distribution and industrial material handling. Manufactured from light-gauge galvanised steel, our spirally wound tubes offer a superior strength-to-weight ratio compared to traditional longitudinal seams.
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The Advantages of Spiral Seam Construction
In the UK, Spiral Ductwork is the industry standard for commercial ventilation (HVAC) and dust extraction due to its aerodynamic efficiency and structural rigidity. Unlike rectangular systems, the helical seam acts as a continuous reinforcement, allowing for thinner metal gauges without sacrificing pressure resistance.
- Optimised Airflow: The smooth internal bore and circular profile reduce turbulence and pressure drop, lowering fan energy costs.
- Leakage Prevention: Continuous helical seams have significantly fewer transverse joints, ensuring high airtightness (up to Class C/D under DW144 standards).
- Strength & Durability: The 4-ply interlocking lockseam increases crushing resistance by up to 2.5 times compared to longitudinal welds.
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Ducting Applications
1. HVAC & Commercial Ventilation
Our Galvanised Spiral Tubes are ideal for exposed ceiling designs in retail and office spaces. They provide a clean, industrial aesthetic while maintaining strict indoor air quality (IAQ).
- Standard Lengths: Supplied in 3-metre lengths as standard for ease of bracketing and installation.
2. Industrial Dust & Fume Extraction
For woodshops, chemical plants, and recycling facilities, our Spiral Seam Pipes serve as the backbone for extraction systems.
- Material Options: Available in AISI 304/316 Stainless Steel for corrosive environments or food-grade applications.
Alnor Ventilation Systems +1
3. High-Pressure Process Piping
For heavier industrial needs, we offer thicker gauge Spirally Welded Pipes capable of handling higher internal pressures for liquid or abrasive solid transport.
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Spiral Ducting – Technical Selection & Sizing
UK ventilation standards typically follow DW144 specifications. We provide an extensive range of diameters to suit every process requirement:
| Nominal Diameter (mm) | Standard Length (m) | Wall Thickness (mm) | Application |
|---|---|---|---|
| 80 – 150 | 3.0 | 0.5 – 0.6 | Small-scale extraction / Residential |
| 200 – 315 | 3.0 | 0.6 – 0.7 | Commercial HVAC / Office ventilation |
| 400 – 630 | 3.0 | 0.8 – 1.0 | Industrial dust control / Main headers |
| 710 – 1250+ | 3.0 / 6.0 | 1.0 – 1.2+ | Large-scale plant / Heavy-duty extraction |
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Technical FAQ: Spiral Ducting & Piping
Q: What is the difference between “Spiral Pipe” and “Spiral Ducting”?
A: In the UK, “Ducting” usually refers to thin-gauge galvanised steel for air movement. “Pipe” often implies a thicker, potentially welded seam used for fluids or high-pressure pneumatic transport.
Q: Can these pipes be used for pneumatic conveying?
A: Light-gauge spiral ducting is excellent for air and dust. However, for abrasive materials (like sand or glass), we recommend our Heavy-Duty Spiral Seam Pipes or reinforced flexible hoses to prevent premature wear on the seams.
Q: Are fittings like bends and T-pieces available?
A: Yes. We supply a full range of Gasketed and Non-Gasketed Fittings, including 90-degree bends, reducers, and branch pieces, all manufactured to match our spiral tube diameters.
A: Yes. We supply a full range of Gasketed and Non-Gasketed Fittings, including 90-degree bends, reducers, and branch pieces, all manufactured to match our spiral tube diameters.