ISO 9001
SMACNA
Product Code: CEI-BSD / Black Steel Rectangular & Circular
Black Steel Duct Works
مجاري هواء صلب أسود
Black steel welded ductwork for kitchen exhaust, industrial ventilation, high-temperature and fire-rated duct applications — fabricated to SMACNA and DW142/144 standards.
Frame Material
Product Description
Black steel (BS) ductwork is fabricated for high-temperature applications, kitchen exhaust systems, industrial ventilation and fire-rated duct installations where galvanized steel is not suitable. All DuctCastle black steel ducts are fabricated using welded seam construction with flanged connections for easy field assembly.
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Material | Black Steel (BS) — welded seam construction | — |
| Applications | Kitchen exhaust · Industrial ventilation · High-temperature · Fire-rated ducts | — |
| Connection Type | Companion angle flanges with bolted joints | — |
| Companion Angle Sizes | 25×25×3mm (J3) · 30×30×4mm (J4) · 40×40×4mm (J5) · 50×50×5mm (J6) | — |
| Bolt Sizes | 6mm (J3) · 8mm (J4/J5) · 10mm (J6) | mm |
| Bolt Spacing | At each corner + intermediate at 150mm centres | mm |
| Configurations | Rectangular · Circular | — |
| Standards | SMACNA (2nd & 3rd Edition) · DW142/144 | — |
| Country of Origin | Egypt | — |
Fields of Application
Tests & Certificates
ISO Certification
International Quality Certifications
International Standards
SMACNA · DW144 · IGC · UL
Duct Test
Rigorous leakage and pressure testing to SMACNA and DW144 standards.
Air Tests
Air velocity and distribution testing.
