Understanding the Portal Frame System in Industrial Steel Buildings
The portal frame is the most widely used structural system in modern industrial buildings due to its simplicity, cost-effectiveness, and ability to span large areas without internal columns. At HIG Modular, we specialize in designing precision-engineered portal frames for manufacturing plants, warehouses, and logistics hubs worldwide.
What is a Portal Frame?
A portal frame is a rigid structural assembly of H-section steel columns and beams, typically connected by welded or bolted joints, forming a clear-span structure that offers:
Spans up to 60 meters
Ridge heights from 6m to 15m
Modular bay spacing for machinery or goods flow
It also incorporates secondary systems like purlins, bracing, tie rods, and gutter channels to stabilize and distribute structural loads effectively.
Structural Highlights:
Component | Description |
Main Frame | Q355B H-beams, hot-rolled or built-up |
Roof Purlins | Galvanized C/Z sections, spaced every 1.2m |
Wall Bracing | Cross-tensioned rod/bracket systems |
Connections | High-strength bolts with expansion anchors |
Cladding Panels | Sandwich panels with Rock Wool or PU cores |
Engineering Benefits:
Column-Free Interiors: Maximizes usable space
Quick to Erect: Pre-fabricated elements minimize on-site delays
Adaptable Load Capacity: Can support cranes, mezzanines, and solar panels
Seismic & Wind Resistance: With proper bracing and anchoring, portal frames meet global safety codes
At HIG Modular, we design each portal frame system based on actual wind load, snow load, seismic zone, and operational usage, ensuring strength, safety, and cost efficiency.
Contact HIG MODULAR
Whether you're building a temperature-controlled warehouse or a heavy-load factory, HIG Modular delivers precision steel solutions that meet your timeline and budget.
Email: info@hig-housing.com
WhatsApp: +86-13812962526
Website: www.hig-house.com
HIG Modular – Steel Structures Engineered for Performance.
