GI Duct
G.I. Rectangular Ducts are fabricated in our factory according to the requirements of customers. Ducts are fabricated using high grade G.I. steel coils and processing of operations is on ultra modern automatic duct making machines operated by experienced and skilled staff. Each duct piece passes through strict Quality Control checks and ensures adhere to specifications and standards, whether it is a normal G.I. duct or a Fire Rated one. The complete range of ducting offered by NAFFCO Flow Control is competitively priced and is insured for full protection against air leakages, fire & smoke and sound.
- Ducts are fabricated from high quality (G-90, Z-275) grade G.I. coils of reputed make Jindal, Nippon, POSCO, AGIS, etc
- To strengthen, beading is done to all of our straight ducts at a distance of 300 mm.
- Pittsburgh longitudinal joints are associated with large pocket size, hence generating extra strong and leak proof joints.
- Special CGF integral flanges with auto double stitching ensure a product suitable for all applications.
Rectangular Ducts
Pressure: Low Pressure - 500Pa
SHEET METAL & AIR CONDITIONING CONTRACTORS’ NATIONAL ASSOCIATION (SMACNA) |
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| Duct Dimensions | G.I. Sheet Thickness | Longitudinal Joint | Transverse Joint |
| 0 - 450 | 0.56 mm | Pittsburgh Seam |
S & C Cleats |
| 451 - 750 | 0.56 mm | Pittsburgh Seam | 20 mm Slide On Flanges with 20 mm Corners, and 1 pc of 20 mm Cleat per side. |
| 751 - 1000 | 0.70 mm | Pittsburgh Seam | 20 mm Slide On Flanges with 20 mm Corners, and 1 pc of 20 mm Cleat per side. |
| 1001 - 1200 | 0.90 mm | Pittsburgh Seam |
20 mm Slide On Flanges with 20 mm Corners, and 1 pc of 20 mm Cleat per side. |
| 1201 - 1400 | 0.90 mm | Pittsburgh Seam |
30 mm Slide On Flanges with 30 mm Corners, & 1 pc of 30 mm Cleat per side. Reinforcement Stiffener 30 mm Flange at 600 mm centre. |
| 1401 - 1600 | 1.00 mm | Pittsburgh Seam |
30 mm Slide On Flanges with 30 mm Corners, & 1 pc of 30 mm Cleat per side. Reinforcement Stiffener 30 mm Flange at 600 mm centre. |
| 1601 - 2000 | 1.00 mm | Pittsburgh Seam |
40 mm Slide On Flanges with 40 mm Corners & 40 mm G-Clamp. Reinforcement Stiffener 40 mm Flange at 600 mm centre. |
| 2001 - 2500 | 1.20 mm | Pittsburgh Seam | 40 mm Slide On Flanges with 40 mm Corners & 40 mm G-Clamp. Reinforcement Stiffener 40 mm Flange at 600 mm centre |
| 2501 - 3000 | 1.20 mm | Pittsburgh Seam | 50 mm GI angle with nuts & bolts. Reinforcement Stiffener 50 mm GI angle at 600 mm centre |
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Catalog |
