PRODUCT

Spiral Duct

Spiral Duct
BEST

Spiral Duct

The round spiral duct with better air flow than the square duct is an efficient for energy saving through seamless air conditioning and ventilation. Since it is spirally bonded, it provides excellent airtightness, strength and durability, and it is cost effective due to easy installation.


Product Type Product Code
SPIRAL DUCT SP ød

Product Features

  • Smooth air flow and excellent airtightness due to less friction loss than
    square ducts, energy.
  • Excellent airtightness due to excellent joining of duct lock-seam.
  • High strength and excellent durability due to the duct lock-seam joined in a spiral form.
  • Easy to install and low installation cost due to simple connection and attachment.
스파이럴 덕트 검수 Spiral Duct Inspection

Product Uses

  • Dual heat insulation tube for cooling, heating and air conditioning (ventilation and air supply and exhaust), industrial dust collector, animal laboratory/plant tissue culture room, factory environment improvement system, clean room facility, etc.

Product Specification

  Material
Hot-dip galvanized steel sheet (GI/CGI)
Galvalume (G/L)
Stainless steel (STS 304)

  Dimension
Diameter(øD) (mm) : 75 ~ 2,500
Thickness(T) (mm) : 0.5 ~ 2.5
Seam Pitch(P) (mm) : 120
Length (m) : 4

Dimension Table

Diamete

Thickness of Sheet

øD(mm)

T(mm)

75 / 80 / 95

0.5

100 / 125

0.5

150 / 155 / 160

0.5/0.6

175 / 180

0.5/0.6

200 / 225 / 230

0.5~1.6

250

0.5~1.6

275 / 280

0.5~1.6

300 / 325 / 330

0.5~1.6

350 / 375 / 380

0.5~1.6

400 / 425

0.5~1.6

450 / 475

0.5~1.6

500 / 525

0.5~2.0

550 / 575

0.6~2.0

600 / 625 / 650 / 675

0.6~2.0

700 / 725 / 750

0.6~2.0

800 / 850

0.8~2.0

900 / 950

0.8~2.0

Diameter

Thickness of Sheet

øD(mm)

T(mm)

1000

0.8~2.0

1050

1.0~2.0

1100 / 1150

1.0~2.0

1200 / 1250

1.0~2.0

1300

1.0~2.0

1400

1.0~2.0

1500

1.0~2.0

1600

1.45~2.0

1700

1.45~2.0

1800

1.45~2.0

1900

1.45~2.0

2000

1.6~2.0

2100

1.6~2.0

2200

1.6~2.0

2300

1.6~2.0

2400

1.6~2.0

2500

1.6~2.0

Diameter

Tolerance

øD(mm)

min. - max.(mm)

100

100.0-100.5

125

125.0-125.5

150

150.0-150.6

180

180.0-180.7

200

200.0-200.7

250

250.0-250.8

280

280.0-280.9

300

300.0-300.9

400

400.0-401.0

450

450.0-451.1

500

500.0-501.1

600

600.0-601.2

800

800.0-801.6

900

900.0-902.0

1000

1000.0-1002.0

1250

1250.0-1252.5

*øD : Connection inner diameter of spiral duct, tolerance             is ±2%.

Performance Data

Air leakage test Test material: thickness 0.5mm, diameter 150mm, length 2,500mm Conditions: sealing both ends of duct, compressed air 500mmAq, temperature 18℃
Time (min.) 0 15 30 60 120
Pressure inside the tube (mmAq) 500±1 500±1 500±1 500±1 500±1
Friction loss test Test material: thickness 0.6mm, diameter 250mm, length 30.6m
Average wind velocity (㎧) 5.37 9.28 12.88 15.02 16.72 17.93 22.55 26.30 33.10
Pressure drop (㎜Aq) 6.0 15.0 24.0 30.5 37.0 41.0 62.5 84.0 127.0
Fluid friction coefficient 0.0277 0.0231 0.0192 0.0180 0.0176 0.0170 0.0164 0.0161 0.0154

Tightness & Sealing Class

This graph shows the leakage amount according to the pressure difference of EURO VENT 2.2 sealing Class AD. The leakage amount ((l/s)/㎡) is associated with to the pressure difference (Pa), and the leakage increases as the pressure difference inside and outside the duct increases.

The unit (l/s)/m2 indicates the amount of leakage inside and outside the system (l/s) per duct area (m2).
The airtightness level of our company’s duct system corresponds to the highest grade, Class D. (Note: Class D is 3 times better than Class C, and Class C is 3 times better than Class B)

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