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دوامة المجلفن قناة الصلب
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
مقدمة المنتج
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.
الخصائص الرئيسية
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.
مخاوف المنتج للعملاء
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.
تطبيقات نموذجية
Cleanroom supply-air branchesExposed technical-space ductworkReturn-air systemsLaboratory general exhaustAir-handling equipment connections
المعلمات الفنية
Typical manufacturing ranges for galvanized spiral duct used in HVAC air distribution are listed below.
| المواد الأساسية | Hot-dip galvanized carbon-steel strip |
|---|---|
| سمك اللوحة | 0.45–0.90 mm spiral-formed wall |
| العرض الفعال | 80–1250 mm nominal internal diameter |
| الحد الأقصى الطول | 3000–6000 mm standard straight length |
| الصلب يواجه سمك | 0.45–0.90 mm galvanized steel wall |
| الكثافة الأساسية | Approximately 7850 kg/m³ solid steel construction |
| الموصلية الحرارية | Approximately 48–54 W/(m·K) for spiral-forming galvanized strip |
| إنهاء السطح | Bright galvanized surface with optional external powder coating |
| نوع المشترك | Gasketed male-female slip joint secured with screws or sealed rivets |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
Galvanized, aluminum or stainless constructionFactory-applied external insulationPowder-coated exposed finishGasketed elbows, tees and reducers
Planning a Spiral Galvanized Steel Duct specification?
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