Prefabricated Steel Structure Garage
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Prefabricated Steel Structure Garage: Modular, Stackable, Fast Assembly
Vehicle storage and parking facility developers face a persistent challenge: conventional concrete parking structures take 8–12 months to build, tie up capital in construction for extended periods, and offer little flexibility for future expansion or relocation. For commercial fleet operators, dealership inventory storage, and urban parking operators, the construction timeline itself is often the bottleneck - not the budget.
Our prefabricated steel structure garage solves this with a modular bolt-together system. Q355B welded H-section columns and cold-formed steel purlins form a rigid portal frame that assembles in 15–25 days for a standard 500 m² single-level garage. The modular 6–9m bay system allows lateral extension by bolting on additional bays without modifying the existing structure. For sites with limited footprint, the frame supports multi-level stacking (2–4 levels) with ramp or lift integration, doubling or tripling parking capacity on the same land area.
For a 100-vehicle commercial garage, the total steel weight runs 25–40 tons - light enough for standard foundations, strong enough for vehicle loads, and fabricated to ±2mm tolerance so bolted connections align on site without field welding or shimming.
Technical Specifications
Parameter | Specification |
|---|---|
Brand | Jidian Construction Materials Co., Ltd. |
Product origin | Xiamen, Fujian, China |
Building type | Prefabricated portal frame garage (modular, multi-level capable) |
Main steel grade | Q355B welded H-section (columns, rafters); Q235B cold-formed purlins |
Max clear span | 12–24m per bay (column-free for vehicle circulation) |
Eave height | 3–6m per level (multi-level: 2–4 levels with inter-floor ramps) |
Floor loading | 300–400 kg/m² (passenger vehicles); up to 800 kg/m² (light commercial vehicles) |
Roof live load | 0.5 kN/m² (upgradable for snow regions) |
Wind load | Up to 0.6 kN/m² (≈140 km/h) |
Seismic rating | Chinese seismic intensity Grade 8 |
Surface treatment | Sa 2.5 blast + epoxy zinc-rich primer (2×75μm) + topcoat; hot-dip galvanizing optional (≥275 g/m² per ISO 1461) |
Cladding options | Color steel plate, PU/rock wool sandwich panel (50–100mm); ventilation louvers optional |
Bay spacing | 6–9m modular (standard parking bay width: 2.5–3.5m) |
Door options | Roll-up doors, sliding doors, sectional overhead doors; pre-engineered openings |
Ramp system | Steel ramp modules (2-level and above); pre-engineered for 10–15% gradient |
Manufacturing tolerance | ±2mm (CNC plasma cutting, automated SAW, AMADA robotic drilling) |
Design life | 50+ years structural; 20+ years coating (galvanized: 50+ years) |
Application | Commercial parking, fleet storage, dealership inventory, vehicle service bays, equipment storage |
Manufacturing standard | GB 50017, GB 50018, ISO 15614-1, ISO 9606, ISO 1461 (if galvanized) |
Delivery time | 15–25 days after drawing confirmation |
Supply capacity | 360,000 tons/year |
Product Advantages
Modular bolt-together assembly – All columns, rafters, and braces arrive pre-cut, pre-drilled, and welded. The crew assembles with bolts - no on-site fabrication, no welding equipment required. A 500 m² garage goes up in 15–25 days.
Multi-level stacking – The portal frame supports 2–4 level configurations with integrated steel ramp modules (10–15% gradient). Double or triple your parking capacity on the same footprint without buying more land.
Lateral expansion without demolition – 6–9m modular bays mean you extend the garage by bolting on another bay. No cutting into existing structure, no downtime for current operations.
Column-free vehicle circulation – 12–24m clear spans eliminate interior columns that block parking aisles, turning radiuses, and vehicle doors. Every square meter is usable.
Pre-engineered door and window openings – Roll-up, sliding, and sectional overhead door openings are designed into the frame. No field cutting of structural members to fit doors.
Light foundation requirement – 25–40 tons of steel for a 100-vehicle garage means standard strip or pad foundations are sufficient in most soil conditions. No deep pile foundations required unless soil conditions demand it.
Relocatable structure – Bolted connections allow disassembly and reassembly at a new site. For temporary parking or leasehold land, the garage is an asset you can move, not a sunk cost.
About Jidian Construction Materials Co., Ltd.
Jidian Construction Materials Co., Ltd. is headquartered in Xiamen, Fujian, China. We participated in the formulation and review of China's national steel structure standards and specifications. Our facility runs heavy steel, light steel, and sandwich panel production lines with an annual capacity of of 360,000 tons of steel and 1,000,000 m² of enclosure output. We hold ISO 9001, ISO 14001, ISO 45001, CE (EN 1090), SGS, and BV certifications, plus China's Steel Structure Manufacturing Special Level Qualification.ion.
Prefabricated building and garage projects have been delivered to 50 countries across Europe, the Middle East, Southeast Asia, Africa, and the Americas, with 2,000+ completed projects worldwide.
Manufacturing, Welding, Quality Control, Packaging, and Export Process
Steel processing and welding
CNC plasma cutting prepares all H-section plates to dimension. Automated submerged-arc welding (SAW) joins columns and rafters with consistent full-penetration welds. The cross-column production line and AMADA secondary processing line ensure ±2mm bolt-hole positioning for accurate field assembly.
Welding qualification and NDT
Welding procedures qualified to ISO 15614-1; all welders hold ISO 9606 certifications. Primary load-bearing welds undergo 100% ultrasonic testing (UT) per GB/T 11345. Magnetic particle inspection (MT) covers secondary connections.
Surface treatment
Surface preparation reaches Sa 2.5 (ISO 8501-1) before coating. Standard: epoxy zinc-rich primer (2×75μm) + topcoat for 20+ years protection. Hot-dip galvanizing (≥275 g/m² per ISO 1461) available for humid or coastal environments. Coating thickness verified per batch.
Pre-shipment inspection
Mill certificates matched to steel batches. UT/MT records verified. Critical dimensions checked against shop drawings. Out-of-tolerance components reworked before loading.
Packaging and shipping
Steel components bundled with steel strapping, ends fabric-wrapped. Hardware and small parts in labeled iron boxes. Shipped in 40ft HQ containers from Xiamen Port. Garage modules packed in assembly sequence for efficient site unloading.
Export documentation
Each shipment includes: mill certificates, weld/NDT records, coating thickness reports, packing list, and commercial invoice. FOB, CIF, and DDP terms available.
Frequently Asked Questions
What is the MOQ?
One garage unit. Price per m² improves above 300 m².
What is the lead time?
15–25 days from drawing confirmation.
How is the garage shipped?
Steel bundled with strapping, small parts in iron boxes. 40ft HQ containers from Xiamen Port. Components packed in assembly sequence.
How are components packaged?
Members bundled with steel strapping and fabric-wrapped ends. Hardware in labeled iron boxes matched to assembly drawings.
What are the payment terms?
T/T (30% deposit, 70% before shipment) or L/C at sight. Alibaba Trade Assurance supported.
Do you offer OEM/ODM?
Full OEM/ODM. Custom dimensions, door types, colors, and branding on components and packaging.
Do you provide installation support?
Assembly drawings, connection sequence videos, and remote support with every order. On-site engineer supervision for multi-level or large projects at your expense.
What do I need to provide for a quote?
Parking capacity (number of vehicles), site dimensions, number of levels, vehicle type (passenger/light commercial), local wind/snow loads, door requirements, and cladding preference. Structural design and price within 24 hours.
Send us your parking capacity, site dimensions, and vehicle type. Structural design and quotation within 24 hours.
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FAQ
What quality certifications do your building materials hold?
Our products are manufactured under strict quality control systems and hold multiple international certifications including ISO 9001, CE, SGS, and BV. Jidian Construction Materials Co., Ltd. operates 26 production lines with advanced testing equipment, and every batch undergoes dimensional, material, and surface inspection before shipment. We also support third-party on-site inspection and pre-shipment testing by SGS, TUV, or other designated agencies. Mill Test Certificates (MTC) and quality reports are provided with every delivery.
Can I request product samples before placing a bulk order?
Yes, we provide product samples for evaluation. Small material samples such as steel coupons, panel cuttings, and fastener samples are provided free of charge, with the customer only paying for shipping. For larger samples or custom prototypes, a sample fee may apply, which is deductible from your bulk order. Please contact Jidian Construction Materials Co., Ltd. with your specific sample requirements and we will arrange shipment from our Xiamen facility promptly.
Can you print our company logo on the building materials or packaging?
Yes, we offer custom logo printing and branding services. Your company logo can be applied to product surfaces (such as panel edges, steel beam ends), packaging materials, and shipping marks. We use laser engraving, stenciling, or adhesive labeling depending on the material and your preference. This service is available for OEM orders with a reasonable MOQ. Provide us with your logo artwork (AI or vector format preferred) and we will incorporate it into the production process.
Do you provide OEM and custom manufacturing services?
Yes, Jidian Construction Materials Co., Ltd. offers comprehensive OEM and ODM services. With an annual steel processing capacity of 360,000 tons and 1,000,000 m² enclosure material output, we can manufacture products to your exact specifications, drawings, or samples. Our engineering team in Xiamen works closely with clients to optimize designs for cost-efficiency and structural performance. We have completed over 2,000 projects across 50 countries, delivering custom steel structures, panels, and building systems tailored to diverse market requirements.
What is the minimum order quantity (MOQ) for your building materials?
The MOQ varies by product type. For standard steel profiles and panels, the MOQ is typically 5 tons. For prefabricated steel structures, the MOQ is one complete set (e.g., one warehouse or workshop building). For customized OEM products, the MOQ depends on the complexity of the design. Jidian Construction Materials Co., Ltd. is flexible and can discuss specific MOQ requirements based on your project needs. Contact us for a detailed quotation.
How do you handle shipping and logistics for international orders?
Jidian Construction Materials Co., Ltd. exports to over 50 countries worldwide from our facility in Xiamen, Fujian, China. We offer both sea freight and land transportation options. For sea freight, we ship from Xiamen Port to major ports globally. For land transport, we deliver to neighboring countries via truck. We handle all export documentation, customs clearance, and can arrange door-to-door delivery through our trusted logistics partners. FOB, CIF, and DDP terms are all available.
How are your building materials packaged for transport?
We use professional packaging tailored to each product type. Steel profiles and beams are bundled with steel straps and protected with waterproof wrapping. Wall and roof panels are stacked on pallets with edge protectors and shrink-wrapped. Fasteners and accessories are packed in wooden cases. All packaging is designed to withstand long-distance sea transport and handling. Custom packaging requirements can be accommodated upon request to ensure safe delivery to your site.
What payment methods do you accept?
We accept T/T (Telegraphic Transfer) and L/C (Letter of Credit). For standard orders, the payment term is 30% advance deposit and 70% balance before shipment. For large project orders, we can negotiate flexible payment terms. All payments are processed through verified international banking channels. Jidian Construction Materials Co., Ltd. has established banking relationships that ensure secure and efficient transactions for our global clients.