Product Description
Our ASTM A36 material-based steel warehouse fabrication service delivers a specialized storage solution engineered specifically for demanding environmental conditions. Unlike standard mild steel structures that require frequent repainting and corrosion maintenance, our system integrates weather-resistant design principles from the material selection stage upward. The primary structural framework utilizes ASTM A36 structural steel, a low-carbon, high-tensile material known for its excellent weldability, machinability, and consistent mechanical properties across a wide temperature range. This grade provides a minimum yield strength of 250 MPa and tensile strength between 400-550 MPa, offering reliable load-bearing capacity for heavy-duty warehouse operations.
The defining characteristic of this product lies in its integrated weather protection strategy. Each steel component undergoes a multi-layer surface protection process tailored to the specific climate conditions of the installation site. For coastal locations with high salt spray exposure, we apply a hot-dip galvanized coating of minimum 85 microns, followed by an epoxy zinc-rich primer and a polyurethane topcoat. This triple-layer system provides cathodic protection, barrier protection, and UV resistance simultaneously. For inland locations with high humidity or chemical atmospheres, we specify different coating combinations optimized for those specific aggressive agents.
Our fabrication process follows strictly controlled shop procedures. All ASTM A36 plates and sections are cut using CNC plasma or laser equipment, ensuring edge quality that minimizes corrosion initiation points. Welding follows qualified procedures with documented parameters, and all finished welds receive non-destructive testing where specified. The structural design incorporates drainage features such as sloped rafters, drip details at eaves, and raised column bases that prevent water pooling and capillary wicking. Ventilation design balances moisture control with thermal performance, incorporating ridge vents and louvered openings that maintain airflow while preventing rain ingress. The complete building is engineered for bolted field assembly, with all holes accurately punched or drilled in the shop, eliminating the need for field welding that could compromise corrosion protection at connection points.
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Item |
Details |
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Product Name |
Customized Portal Frame Steel Structure Warehouse/Workshop/Hangar |
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Main Steel Frame |
Welded steel beams and columns |
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Secondary Frame |
Hot-dip galvanized purlin, steel bracing, tie bar, knee brace, edge cover, etc. |
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Roof Panel |
Glass wool sandwich panel (optional: Rock wool sandwich panel, PU sandwich panel, Corrugated steel sheet) |
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Wall Panel |
Glass wool sandwich panel / Corrugated steel sheet |
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Connection Mode |
High-strength bolt connection + Partial welding |
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Tie Rod |
Circular steel tube (Hot-dip galvanized surface treatment) |
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Knee Brace |
Angle Steel (Galvanized/painted surface) |
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Brace |
Round Bar / Angle Steel (Hot-dip galvanized treatment) |
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Door Configuration |
Roller shutter door (Large cargo access) / Access door (Personnel access) |
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Window Configuration |
Fixed window / Sliding window |
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Ventilation System |
Roof ventilator (Natural ventilation) / Side wall ventilation window |
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Design Parameters |
Customized based on project site size , load capacity, local building codes and customer functional requirements |
Product Features
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1.Crane-ready structural design – Integrated runway beams and bolted brackets support overhead cranes from 5 to 50 tons, enabling heavy lifting without post-installation modifications.2.Reinforced primary framing – Welded H-section columns and rafters with NDT-verified weld quality, engineered for dynamic loads from moving machinery and vibration-prone production lines.3.Column-free interior spans – Portal frame geometry achieves spans from 18 to 48 meters without internal columns, providing unobstructed space for production cells, assembly lines, and material storage. -
4.Hot-dip galvanized secondary components – All purlins, bracing, and ties receive 550g/m² zinc coating, delivering 20+ years of corrosion protection in industrial environments with chemical exposure or high humidity.5.Fast bolted assembly – Factory-punched holes and bolted connections reduce on-site welding by 85%, cutting erection time by 40% compared to conventional steel buildings.6.Customizable crane configurations – Choose from under-hung (lighter loads) or top-running (heavier loads) systems with adjustable height and lift distance. -
7.Industrial-grade envelope system – Impact-resistant corrugated steel walls plus insulated roofing options for thermal regulation, condensation control, and noise reduction.8.Flexible expansion capability – Modular design allows future bay extensions, additional crane ways, or mezzanine floors without major structural modifications.9.Low maintenance and long service life – Shot-blasted and primed surfaces prevent rust; galvanized secondary frames eliminate repainting needs for decades.
Application
Get A Quote
Please provide the following key project details for an accurate quotation:
1.Project Basic Info – Country, intended usage (manufacturing / assembly / repair / other), and current progress (land ownership & permit status).
1.Project Basic Info – Country, intended usage (manufacturing / assembly / repair / other), and current progress (land ownership & permit status).
2.Site Conditions – Local climate: design wind speed (km/h or Pa), snow load (kg/m² or kN/m²), seismic zone (0-4), and ambient temperature range.
3.Building Dimensions – Required clear span (width) × length × eave height, bay spacing, and total floor area.
4.Crane Requirements – Crane capacity (tons), number of cranes, runway length, lift height, and whether under-hung or top-running configuration.
5.Design & Drawings – Whether you have finished structural drawings, or need our full design, calculation, and shop drawing services.
6.Internal Configuration – Whether mezzanine floors, overhead crane systems, conveyor supports, or equipment pits are required inside.
7.Envelope System – Preferred roof and wall panel materials, insulation type (glass wool/rock wool/PU/none), door sizes (roller shutter + personnel), window specifications, and ventilation preferences (natural/powered).
