Product Specification

What Is a Prefabricated Steel Structure Building?

A prefabricated steel structure building is a bolt-together steel frame system in which every column, rafter, purlin, and connection plate is precision-cut, drilled, and welded in our factory — then containerized and shipped to your site for rapid assembly.

Unlike traditional on-site steel fabrication (which is slow, weather-dependent, and expensive in most countries), our approach delivers:

· 30–50% faster construction compared to conventional steel erection

· Zero on-site welding — 100% bolted connections

· Lower total project cost through factory efficiency and reduced site labor

· Consistent quality — every component passes dimensional inspection before packing

· This is not a "steel kit." This is a fully engineered structure, designed to your local wind, snow, and seismic loads.

Bolt-Together System — No Site Welding

· Every connection in our steel frames is designed for bolted assembly. Your crew needs:

         · A mobile crane or telehandler

         · Basic hand tools and torque wrenches

         · Our color-coded erection drawing set

         · No welding machines. No on-site NDT. No weather delays waiting for weld inspections.

Case | 2,000 ㎡ Cold‑Chain Warehouse on the Outskirts of Oslo, Norway

Project Location: Lillestrøm, outskirts of Oslo, Norway Project Type: Steel‑structure chilled & frozen warehouse Floor Area: 2,000 ㎡ Temperature Zoning: 800 ㎡ freezer zone at ‑25 °C / 1,200 ㎡ chill zone at 0‑4 °C Delivery Schedule: 40‑day design + 40‑day production + 55‑day sea freight & erection

Project Background

• The facility serves as a central distribution cold storage for a Norwegian seafood exporter, located 30 km north of Oslo. The area experiences extreme winter temperatures down to ‑25 °C with a snow load of 3.5 kN/㎡, imposing stringent requirements on structural capacity and continuous insulation performance.

Technical Solution

• Main steel structure designed in accordance with NS‑EN 1993‑1‑3 (Nordic National Annex), taking steel brittle‑fracture toughness under extremely low temperatures into consideration.
• Building envelope adopts 150 mm‑thick PIR polyurethane cold‑storage panels with double‑sided stainless‑steel facings; thermal conductivity ≤ 0.022 W/(m·K).
• Floor construction: XPS extruded polystyrene insulation layer plus anti‑frost‑heave ventilation duct system.
• Thermal‑bridge mitigation: pre‑fabricated insulating sleeves for all pipe penetrations through walls; thermal‑break details at door‑frame junctions.
• Freezer zone equipped with electric sliding cold‑storage doors (with heated door frames for anti‑freezing protection).

Project Highlights

• Upon commissioning, third‑party energy‑efficiency assessment shows the warehouse achieves 12 % lower annual specific energy consumption than comparable Norwegian projects. The client has subsequently referred two cold‑storage projects from industry peers.

Why Our Clients Choose Us

      · "We've sourced steel buildings from three different countries over the past decade, and this was the smoothest experience by far. All 4,200 bolted connections fit perfectly — not a single hole needed re-drilling."

      · — Operations Director, Logistics Company, Nigeria

Frequently Asked Questions

· How long does it take from order to delivery?

· Typical timeline: design & engineering 15–25 working days + fabrication 25–50 working days + ocean freight (varies by destination; e.g., 22 days to West Africa, 30 days to Europe, 35 days to East Coast North America). Most projects arrive on site within 10–14 weeks of order confirmation.

· Can you handle the structural design and calculations?

· Yes. Our in-house engineering team produces a complete structural package — frame analysis, connection design, foundation reaction tables, and anchor bolt layouts — referenced to your local building code. We can also coordinate with your local engineer of record for plan review and permit submission.

· What about installation? Do you provide site supervision?

· We strongly recommend our site supervision service for first-time clients: an experienced erection supervisor travels to your site to guide your local crew through the assembly. For repeat clients with trained crews, the bolt-together system is designed for self-erection using our color-coded manual.