

This high-efficiency HVAC duct elbow blanking machine is a specialized solution for the rapid fabrication of ventilation elbows. Unlike traditional cutters, it integrates embossing, circular rib pressing, and automatic rolling into a single workflow.
Materials: Optimized for 0.25mm galvanized sheet.
Precision: 12 forming stages with GCr15 vacuum-quenched rollers.
Versatility: Adjustable processing width from 300mm to 1200mm.
Efficiency: Production speeds up to 10m/min with automatic upper-roller lifting to protect seams.
Automatic HVAC Duct Elbow Blanking Machine
Our HVAC duct elbow blanking machine is engineered for precision and durability. The core of the machine features a 12-stage forming system using GCr15 vacuum-quenched rollers, ensuring that even thin 0.25mm galvanized sheets are processed without surface damage or deformation.
Advanced Automatic Coiling System
To prevent the common issue of seam damage during the rolling process, this machine utilizes an automatic adjustable inclined roller system. The upper roller is equipped with an auto-lifting function, specifically designed to bypass the seam, resulting in a smooth, high-quality elbow segment ready for assembly.
Compact & Robust Design
With a footprint of only 4m x 2.5m, this 3-ton heavy-duty machine provides the stability needed for industrial-grade production while optimizing your workshop space. The 940mm working height is ergonomically designed for easy operation and material handling.
Technical Parameters For Snap Lock Round Pipe

Process Flow
Manual feeding—Two-side forming—Embossed, pressing circular ribs, and round
Two-Side Forming Schematic Diagram

Technical Parameters
| Technical Features | Specifications |
|---|---|
| Material | 0.25mm Galvanized Sheet |
| Sheet Length | ≤ 1524 mm |
| Sheet Width | 300 – 1200 mm |
| Production Line Speed | 10 m/min |
| Number of Forming Rollers | 12 Forming Stages |
| Roller Material | GCr15 (Vacuum Quenching) |
| Roller Structure | One side fixed, the other adjustable for processing widths of 300–1200mm |
| Support Roller | Φ70 Rubber-coated surface |
| Coiling Roller Diameter | Φ76 medium-frequency hard chrome-plated surface |
| Coiling Diameter | 102 – 355 mm |
| Coiling Method | automatic adjustable inclined rollers, upper roller auto-lifting to avoid seam pressing Base-end embossing and circular rib pressing |
| Working Height | 940 mm |
| Area | 4m × 2.5m |
| Equipment Weight | Approx. 3 Tons |
Our hours
Mon 11/21 - Wed 11/23: 9 AM - 8 PM
Thu 11/24: closed - Happy Thanksgiving!
Fri 11/25: 8 AM - 10 PM
Sat 11/26 - Sun 11/27: 10 AM - 9 PM
(all hours are Eastern Time)