D.S Industry Co., Ltd

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Insulated Spiral Duct & Fittings

Product Overview

It is the first duct product developed in Korea. The spiral duct and fittings are finished with a crosslinked foamed polyethylene insulating material, so it has excellent insulation and cooling performance and high condensation prevention effect.

Product Features

Utility model No.20-0435808(2007) 「Spiral duct fittings with insulation material cover」
Excellent insulation performance and non-absorption property, complete prevention of condensation
Stretch absorption effect and noise/vibration prevention
Excellent chemical resistance, heat resistance, cold resistance, and durability, and there is change even after long use.

Item	Density(g/㎤)	Thermal conductivity(㎉/mh℃)	Water Resistance	Weather Resistance
Cross-linked foamed polyethylene	0.025	0.030	◎	◎
Foamed polystyrene	0.015	0.031	△	△
Soft urethane	0.025	0.032	X	X
GLASS WOOL	0.01	0.034	X	O
Polished Felt	0.017	0.037	X	X
Gypsum Board	0.9	0.098	X	O
Wood wool cement board	0.7	0.013	△	X
Comparison of various insulating materials

Item	Cross-linked foamed polyethylene	Urethane foam	Foamed polystyrene
discoloration	No discoloration	Changes to blackish brown	No discoloration
Shape	No discoloration	Weathering, scattering	Weathering, scattering
Surface	No discoloration	Hardening, Erosion	Erosion, Bumpy
Shrinkage	Almost no shrinkage	Large shrinkage	Unclear due to large shrinkage
Tensile strength	90%	49%	50%
Elongation	90%	64%	0%

Results of 1- year outdoor exposure test of various insulation materials

Product Uses

Air supply to the heat exchanger of air conditioning equipment such as system air conditioner

Product Specification

Material
Cross-linked foamed polyethylene KS standard : KS M 3862 Flame-retardant and flammability test report No. 2007-03-2170-1 (Korea Fire Equipment Inspection Corporation)