| Round duct system
Round Segmented Bend 30° (with Gasket)
Product Description
A round 30° segmented bend is a fitting designed for a very smooth change in the direction of a ventilation run. Unlike pressed bends, the segmented (welded) method is used to create bends of large diameters (from 250 mm and up).
Performance Difference: The 30° angle provides very low aerodynamic resistance. It is used where a gradual correction of the duct path is needed and ensures low noise levels. The factory-installed EPDM rubber gasket guarantees a high airtightness (Class "D").
Key Features
- Airtightness Class D: Thanks to the EPDM gasket, which is factory-crimped by a lock-seam, a high level of system airtightness is achieved without the need for sealants.
- Segmented Construction: Allows for the manufacturing of large-diameter bends (up to 1000 mm and larger) that cannot be produced by pressing.
- Low Resistance: The smooth 30° angle provides a very gradual change in direction, ensuring minimal pressure loss and low noise levels.
- Safe Edges "SAFE": Specially rounded and reinforced edges make installation safer (no sharp edges to cut hands) and provide additional rigidity.
- High-Quality Steel: Made from galvanized steel (Z275, 275 g/m²).
Available Diameters and Specifications
Below are the standard sizes for 30° segmented bends. Pressed bends (diameter up to 200 mm) are a separate product.
Main parameters of 30° segmented bends
| Diameter (mm) |
Radius (A, mm) |
Insertion Depth (H, mm) |
Weight (kg) |
Article |
| 250 |
250 |
45 |
1.28 |
VASLI30250 |
| 315 |
315 |
45 |
1.48 |
VASLI30315 |
| 355 |
355 |
45 |
2.61 |
VASLI30355 |
| 400 |
400 |
70 |
2.97 |
VASLI30400 |
| 500 |
500 |
70 |
4.59 |
VASLI30500 |
| 630 |
630 |
70 |
9.13 |
VASLI30630 |
| 800 |
800 |
100 |
19.46 |
VASLI30800 |
| 900 |
900 |
100 |
24.58 |
VASLI30900 |
| 1000 |
1000 |
100 |
30.08 |
VASLI301000 |
Material and Thickness (for all types):
- Material: Galvanized steel DX51+Z275 (275 g/m²). Stainless steel (AISI430, AISI304, AISI316), aluminum, and powder coating (according to RAL or RR catalogs) are available on request.
- Thickness: From 0.5 to 1.0 mm (depending on diameter).
- Certification: The products comply with CE, EN 1505:2000 and EN 1506:2007 standards.
Application and Installation Tips
- Installation: The bend (which has a "male" spigot with a gasket) inserts easily and airtightly inside a straight duct.
- "Fitting-to-fitting" connection: To connect two fittings (e.g., two bends) together, use a coupler (external connection).
- Safety: Thanks to the "SAFE" edges, installation is faster and safer, without the risk of cuts.
- Fastening: It is recommended to secure the joint using self-tapping screws or rivets.
Availability and Ordering
- Availability: Standard segmented bends, shown in the table, are always in stock or available on short lead times.
- Custom Order: On request, it is possible to manufacture bends without a gasket (to reduce cost), non-standard radii, and any other non-standard variations (including the materials specified in the characteristics).
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