Galvanized steel rectangular air duct section with reinforced flat panels

Системы распределения воздуха в чистых помещениях

Оцинкованный сталь прямоугольный воздуховод

A rigid G90 galvanized sheet-steel duct fabricated in rectangular sections for space-efficient cleanroom supply, return and general ventilation routes.

G90 Zinc-Coated Steel
Space-Efficient Rectangular Form
Reinforced Flat Panels
Sealed Flange Connections

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Введение продукции

Galvanized steel rectangular ductwork provides a durable and economical air path where ceiling zones, risers or equipment connections favor a rectangular section. Straight sections are formed from zinc-coated sheet steel with Pittsburgh-lock or welded longitudinal seams, transverse reinforcement and flanged ends selected for the duct dimensions and pressure duty. Smooth internal surfaces reduce friction and provide accessible wipe-down areas, while mastic or closed-cell gaskets seal the transverse joints. The format integrates readily with dampers, filters, terminal housings and rectangular equipment plenums.

Основные характеристики

Zinc-coated sheet steel provides practical corrosion protection for conditioned indoor air systems.

Rectangular proportions use shallow ceiling voids more efficiently than equivalent circular ductwork.

Standing seams, beading or external reinforcement limit panel vibration on larger duct faces.

Flanged transverse joints allow long routes to be assembled from replaceable factory-made sections.

Обеспокоенность клиентов продуктами

Rectangular ductwork must remain rigid, clean and sufficiently airtight even when broad panels and numerous field joints are installed above a congested cleanroom ceiling.

Wide duct faces drum or flex when fan pressure changes.Sheet gauge, cross-breaking and reinforcement spacing are selected for the largest panel dimension and pressure class.

Air leakage at repeated transverse joints wastes conditioned cleanroom airflow.Matched flange corners, continuous gasket and exterior sealant create a consistent joint compression path.

A round duct cannot fit the available shallow ceiling zone.A low-profile rectangular aspect ratio preserves flow area while reducing installed depth.

Exposed cut edges corrode after site modification.Cut edges are deburred, cleaned and protected with a compatible zinc-rich repair coating.

Типичные приложения

Cleanroom supply-air mainsReturn-air and recirculation ductsAir-handling-unit connectionsCeiling service corridorsGeneral laboratory ventilation

Технические параметры

Common fabrication ranges for indoor G90 galvanized rectangular air duct are listed below.

Основной материал	G90 hot-dip galvanized carbon-steel sheet
Толщина панели	0.55–1.50 mm, selected by duct size and pressure duty
эффективная ширина	150–2000 mm rectangular side dimension
Максимальная длина	1500 mm per standard fabricated section
Толщина линий стали	0.55–1.50 mm galvanized sheet body
Плотность ядра	Approximately 7850 kg/m³ solid steel construction
Теплопроводимость	Approximately 50–55 W/(m·K) for low-carbon galvanized sheet
Поверхностная отделка	Continuous G90 zinc coating with optional external powder coating
Объединенный тип	TDC/TDF or angle flange with closed-cell gasket and sealed corners
Customization	Доступно в зависимости от предполагаемого применения и операционной среды.

Доступные варианты

Internal or external thermal insulationPowder-coated external finishAccess doors and test portsTransitions, offsets and equipment plenums

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