STJH-SPIRAL-GALVANIZED-STEEL-DUCT-DN315

Spiral Galvanized Steel Duct DN315

Medium spiral branch duct with a reinforced sheet thickness.

Medium bore connects naturally to circular distribution fittings.
A thicker shell supports a broader passage.

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Product Introduction

The 315 mm round section provides a larger flow passage for groups of terminals. Its galvanized wall is thicker than the smallest branch version, and the continuous spiral seam maintains the cylindrical shape along the straight duct length.

Key Features

Medium bore connects naturally to circular distribution fittings.
A thicker shell supports a broader passage.

Technical Parameters

Duct Diameter	315 mm
Sheet Thickness	0.6 mm
Straight Length	3000 mm
Shell	Galvanized steel
Mass per Metre	5.41 kg/m
Profile	Round
Seam Form	Spiral lock seam
Thermal Layer	Bare duct; external insulation optional
End Connection	Circular coupler system
Customization	Available for the actual branch layout and operating environment.

Applications

Supply to terminal groups
Medium extract distribution

Solutions for Your Application

Small branch ducts cannot carry the combined terminal duty.

The 315 mm passage gives the group branch a larger cross section.

Round fittings need consistent connection geometry.

The rigid circular ends mate with matching couplers and bends.

Available Options

Branch takeoffs
External duct wrap

Planning a Spiral Galvanized Steel Duct DN315 specification?

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