STJH-SPIRAL-GALVANIZED-STEEL-DUCT-DN100

Spiral Galvanized Steel Duct DN100

Small spiral duct for compact circular ventilation drops.

Narrow circular profile fits compact branch layouts.
Spiral seam stiffens the light sheet-metal shell.

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Product Introduction

A helically formed seam joins the galvanized strip into a rigid round passage. The 100 mm bore fits small takeoffs and local transfer routes, while a straight factory length reduces the number of joints along an uncomplicated branch.

Key Features

Narrow circular profile fits compact branch layouts.
Spiral seam stiffens the light sheet-metal shell.

Technical Parameters

Nominal Diameter	100 mm
Wall Thickness	0.5 mm
Standard Length	3000 mm
Material	Galvanized steel
Approximate Mass	1.43 kg/m
Cross Section	Circular
Longitudinal Construction	Helical lock seam
Insulation	Uninsulated
Connection	Matching circular duct fittings
Customization	Lengths and fittings can suit the intended application and environment.

Applications

Local air-transfer branches
Small equipment exhaust drops

Solutions for Your Application

A local drop must fit among closely spaced services.

The small round section minimizes the branch envelope.

Excess joints slow assembly on a straight run.

The standard three-metre section covers a useful branch length in one piece.

Available Options

Cut lengths
Matching bends and couplers

Planning a Spiral Galvanized Steel Duct DN100 specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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