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Sistemas de distribución de aire para salas limpias
Ducto de acero galvanizado en espiral
A round galvanized steel duct formed with a continuous spiral lock seam for rigid, aerodynamically efficient cleanroom supply and return routes.
- Continuous Spiral Lock Seam
- Rigid Round Geometry
- Low-Friction Air Path
- Gasketed Fitting System
Introducción del producto
Spiral duct is manufactured by helically forming galvanized strip into a rigid round tube with a continuous locked seam. The circular cross-section resists pressure deformation efficiently and usually requires less reinforcement than a broad rectangular panel. Factory-made elbows, branches and reducers use male insertion ends with double-lip gaskets or sealed slip joints. Exposed installations benefit from the regular spiral appearance, while concealed cleanroom services gain a compact duct with predictable support and airflow characteristics.
Características clave
A circular bore distributes internal pressure uniformly and supports smooth airflow through long runs.
Double-lip gasketed fittings shorten assembly time and create repeatable insertion joints.
Standard round accessories simplify changes in diameter, direction and branch layout.
Preocupaciones del producto del cliente
Round duct routes must balance ceiling-space use, joint leakage, hanger spacing and clean fitting transitions at every branch.
Thin round duct ovalizes during transport or hanging.Spiral seam stiffness and correctly spaced circular supports retain the designed diameter.
Field-applied sealant is inconsistent around every fitting.Factory-fitted double-lip gaskets provide uniform circumferential sealing at insertion joints.
Abrupt branch fittings create turbulence and excess pressure loss.Swept bends and gradual conical transitions preserve the round flow path.
Condensation forms on exposed cold supply duct.A continuous external vapor-sealed insulation system is added for the scheduled air temperature and humidity.
Aplicaciones típicas
Cleanroom supply-air branchesExposed technical-space ductworkReturn-air systemsLaboratory general exhaustAir-handling equipment connections
Parámetros técnicos
Typical manufacturing ranges for galvanized spiral duct used in HVAC air distribution are listed below.
| Materiales Core | Hot-dip galvanized carbon-steel strip |
|---|---|
| Panel de espesor | 0.45–0.90 mm spiral-formed wall |
| Ancho efectivo | 80–1250 mm nominal internal diameter |
| Longitud máxima | 3000–6000 mm standard straight length |
| Acero frente a espesor | 0.45–0.90 mm galvanized steel wall |
| Densidad Core | Approximately 7850 kg/m³ solid steel construction |
| Conductividad térmica | Approximately 48–54 W/(m·K) for spiral-forming galvanized strip |
| Superficie acabada | Bright galvanized surface with optional external powder coating |
| Tipo conjunto | Gasketed male-female slip joint secured with screws or sealed rivets |
| Customization | Disponible según la aplicación prevista y el entorno operativo. |
Opciones disponibles
Galvanized, aluminum or stainless constructionFactory-applied external insulationPowder-coated exposed finishGasketed elbows, tees and reducers
Planning a Spiral Galvanized Steel Duct specification?
Envíenos sus dimensiones, condiciones de instalación, objetivos de rendimiento y acabado superficial requerido.
