Duct round galvanized steel, 3m

OS3-d (spiral) from galvanized strip steel, L-3000 mm. The multi-layer seams formed by the spiral ducts are concentrated on the outside of the product, so the airflow is not drawn into the air channel axis. The ducts are characterized by low pressure losses. Spiral ducts of medium and larger diameters are stiffened by two external spiral ridges of low pitch.

OSN3-d (spiral) from stainless strip steel, L-3000 mm.

AISI-304 grade stainless steel is used.