We present you a rectangular ducts and fittings with available size as required. These products and fittings is fabricated under the autoline VI following the DW1444:1998 Standard ( Specidication for sheet metal duct work - First Edition) and SMACNA:1995 Standard ( Sheet metal and Air conditioning contractor's nation association - Second edition):
1.Material classification:
+Galvanized Iron sheet : Hoa sen - Phuong Nam - Bluescope...etc.
+Stainless steel
SPECIFICATION DESIGN:
1.CLASS A - LOW PRESSURE DESIGN
| Air tightness class |
Leakage limits
([Fmax]m3s-1m-2 |
Postive static pressure limits
(Pa) |
Negative static pressure limits
(Pa) |
Maximum air velocity
(m/s) |
| A |
0.027xPtest0.65x10-3 |
500 |
500 |
10 |
2.CLASS B - MEDIUM PRESSURE DESIGN
| Air tightness class |
Leakage limits
([Fmax]m3s-1m-2 |
Postive static pressure limits
(Pa) |
Negative static pressure limits
(Pa) |
Maximum air velocity
(m/s) |
| B |
0.009xPtest0.65x10-3 |
1000 |
750 |
20 |
3.CLASS C - HIGH PRESSURE DESIGN
| Air tightness class |
Leakage limits
([Fmax]m3s-1m-2 |
Postive static pressure limits
(Pa) |
Negative static pressure limits
(Pa) |
Maximum air velocity
(m/s) |
| C |
0.003xPtest0.65x10-3 |
2000 |
750 |
40 |
DUCT DESIGN:
| Class design |
Long size length
(mm) |
Duct size's Allowable deviation
(mm)
|
Minimum thickness
(mm) |
| A |
<400
401 - 1000
1001 - 1600
1601 - 2500
2501 - 3000 |
0-4
0-4
0-4
0-5
0-5 |
0.6
0.8
1.0
1.0
1.2 |
| B |
<400
401 - 1000
1001 - 1600
1601 - 2500
2501 - 3000 |
0-4
0-4
0-4
0-5
0-5 |
0.6
0.8
1.0
1.0
1.2 |
| C |
<400
401 - 1000
1001 - 1600
1601 - 2500
2501 - 3000 |
0-4
0-4
0-4
0-5
0-5 |
0.8
0.8
1.0
1.2
1.2 |
VANLOC MECHANICAL ELECTRICAL AND CONSTRUCTION JOINT STOCK COMPANY
Headquarter:
Address: 138B No, Dong Thien Street, Vinh Hung Ward, Hoang Mai District, Ha Noi, Vietnam
Tel: (+84) 24 33 74 7979
Factory: University Of Business and Technology Area,Ly Thai To Street, Dinh Bang Ward, Tu Son District, Bac Ninh Province, Vietnam
Tel: +02226558883
HOTLINE: (+84) 989 546 556
Website: www.ongthonggiopro.com
Email: info@ongthonggiopro.com
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