ASTM A36 Prefabricated Steel Structure Building | Custom Steel Frame Factory, Warehouse & Office Buildings
Steel Structure Building
Built with high-strength steel, steel structures stand out for solid seismic and wind resistance, fast construction timelines and flexible space layout.
Steel Structure House
Light-gauge steel framing is widely used for steel homes. This building style is energy-efficient, eco-friendly, well-insulated and can be finished in a shorter construction cycle.
Steel Structure Warehouse
Steel warehouses feature wide clear spans, efficient space usage, quick assembly and flexible design options.
Steel Structure Factory Building
Steel factories offer excellent load-bearing performance. Large column-free spans are achievable, making them a practical fit for production and other industrial uses.
Core steel structure products for factory construction
1. Main load-bearing structure (adaptable to tropical seismic requirements)
| Product Type | Specification Range | Core Function | Central America Adaptation Points |
| Portal Frame Beam | W12×30 ~ W16×45 (ASTM A572 Gr.50) | Main beam for roof/wall load-bearing | The structure adopts a high seismic-performance node design using bolted connections instead of welds to minimize the risk of brittle failure. The cross-section has also been optimized to reduce overall weight, making transportation and handling more efficient. |
| Steel Column | H300×300 ~ H500×500 (ASTM A36) | Supports frame and floor loads | The base is equipped with embedded seismic connectors to enhance structural stability. A hot-dip galvanized finish with a zinc coating of no less than 85μm is applied, ensuring reliable corrosion protection in high-humidity environments. |
| Crane Beam | W24×76 ~ W30×99 (ASTM A572 Gr.60) | Load-bearing for industrial crane operation | Designed for heavy-duty applications (5–20 ton cranes), the structure features end beams equipped with shear-resistant connection plates to ensure stable and reliable performance under load. |
2. Enclosure system components (weather sealing and rust protection)
Roof purlins: C12×20 to C16×31 hot-dip galvanized sections, spaced 1.5–2 m apart to carry color-coated steel roof panels. The system is engineered to withstand Typhoon Level 12 wind loads.
Wall purlins: Z10×20 to Z14×26 sections coated with anticorrosive paint. Vent cutouts are integrated to lower indoor humidity, ideal for factories operating in tropical climates.
Cross bracing uses Φ12–Φ16 hot-dip galvanized round bars, paired with L50×5 angle corner braces. These lateral stiffeners reinforce the whole frame for wind resistance up to 150 mph.
3. Auxiliary support items (tailored for local construction practices)
Steel embed plates: 10–20 mm thick, hot-dip galvanized. Designed for concrete foundations, the standard foundation solution across Central America.
Fasteners: Grade 8.8 hot-dip galvanized high-strength bolts. Site welding can be avoided to cut down installation time.
Finishing coatings: Water-based fire retardant paint with ≥1.5-hour fire rating, plus UV-stable acrylic anticorrosive paint with a service life of over 10 years. Both formulations meet regional environmental regulations.
Steel Structure Sections
Steel sections fall into two broad categories: standard profiles covered by international specifications, and custom proprietary profiles.
I-beams: These are the classic I-profiles. Naming varies by region — UB (Universal Beam) and UC (Universal Column) in the UK; IPE, HE, HL and HD profiles across Europe; W-shapes / wide flange sections (WF) and H-sections in the US.
Z-sections: Recognisable by their opposing, offset flanges.
HSS: Hollow Structural Sections, also referred to as SHS (Structural Hollow Sections). This family covers square, rectangular, round tube and oval profiles.
Angle steel: L-shaped profiles.
Structural channels, also known as C-sections.
T-beams: T-shaped sections.
Steel flats: Rectangular cross-section bars, narrower than steel plates.
Steel rods: Solid round or square stock, with length far exceeding its cross-sectional dimension.
Steel sheets: Flat metal products under 6 mm (1/4 inch) in thickness.
| Processing Stage | Equipment Used | Description |
| Cutting | CNC plasma cutting and flame cutting, shearing machines | Plate and section steel are cut by plasma or flame cutting and lighter plate by shearing. Tolerance on size and shape is closely monitored. |
| Forming | Bending machines - folding machines - coil materials | Cold bending, press braking for edge and rain gutters,rolling for circular and arc-shape products such as round roof tile, round windows and door. |
| Welding | Submerged arc welding machines, manual CO2 gas shielded welding machines, electric arc welding machines | H beams and columns are submerged arc welded, connection plates are manual welded, and CO2 welding is used for plates of thinner steel. |
| Hole Making | CNC drilling and punching machines | CNC drilling allows for accurate bolt holes in structural elements. Punching is also utilized for the production of high efficiencies batches holes with close tolerances. |
| Surface Treatment | Shot peening/sandblasting machines, grinding machines, galvanizing production lines | Surface is cleaned by blasting, weld seam are ground smooth and hot dip galvanize is for rust protection. |
| Assembly | Assembly platforms, measuring tools | Parts are disassembled prior to shipping for two-step assembly, Pre-assembled at fit-up check by dimensional check, disassembled after dimensional check and shipped safely and efficiently. |
| Test Item | Standard & Method | Description |
| Salt Spray Test | ASTM B117 (Neutral Salt Spray Test) / ISO 11997-1 (Cyclic Salt Spray Test) | Evaluate the coating's corrosion resistance under high salinity conditions, suitable for coastal environments such as Central America. |
| Adhesion Test | ASTM D3359 (Cross-cut Test) / ASTM D4541 (Tear Test) | Cross-cut adhesion testing checks the coating's adhesion, and pull-out testing measures the bond strength between the coating and the substrate. |
| Humidity Resistance Test | ASTM D2247 (40°C/95% RH) | Evaluate the coating's performance under high humidity conditions to prevent blistering and cracking in rainy climates. |
| UV Aging Test | ASTM G154 | Simulate long-term UV exposure to ensure the coating exhibits good resistance to fading and surface degradation. |
| Film Thickness Test | ASTM D7091 (Dry Film Test) / ASTM D1212 (Wet Film Test) | Measure the coating thickness to ensure it meets specified corrosion protection requirements. |
| Impact Resistance Test | ASTM D2794 | Evaluate the coating's impact durability to reduce damage during handling and installation. |
Treatment on surface Display: Epoxy zinc-rich coating, Galvanized(hot dip galvanized layer thickness≥85μm service life can reach 15-20 years), black oiled, etc.
Black Oiled
Galvanized
Epoxy Zinc-rich Coating
Packaging
All steel goods are securely bundled to guard surface finish and maintain structural integrity through loading, handling and transit. Individual components are wrapped in waterproof plastic film or anti-rust paper. Small fittings and hardware go into wooden crates. Every bundle and profile carries clear marking, for smooth unloading and accurate on-site assembly.
Transportation
Steel structure cargo can go out via container or bulk vessel, depending on component dimensions and destination. Oversized and heavy pieces are secured with steel strapping, with edge protection fitted to prevent shifting during shipment. Our logistics follow international shipping norms, supporting reliable lead times and safe delivery, even for long-haul and cross-ocean shipments.
1. Overseas Branch & Spanish Language Support
We have overseas offices with Spanish-speaking staff that we are able to fully communicate with our clients from Latin America and Europe.
Our team processes help you with customs clearance, documentation, and for smooth delivery and faster import processing.
2. Ready Stock for Fast Delivery
We keep enough standard steel structure raw materials stock, which including H beam, I beam and structure parts.
This allows for faster lead times so customer’s can receive products quickly and reliably for those urgent projects.
3.Professional Packaging
All products are packed with standard seaworthy packaging -Steel frame bundling, waterproof wrapping, edge protection.
This will guarantee and ensure safe loading, stability during long distance transport and no damage upon arrival in the destination port.
4.Efficient Shipping & Delivery
We cooperate with trustable domestic shipping agents, can offer flexible terms of delivery including FOB, CIF, DDP.
Whether by sea, rail, road, we assure you on-time shipment and efficient logistics tracking services.
Q: Which standards apply to your steel structures?
A: Our steel structures follow American specifications including ASTM A36, ASTM A572 and more. For reference, ASTM A36 is a common carbon structural grade, while A588 offers superior weather resistance and works well in harsh outdoor environments.
Q: What is your steel quality control process?
A: We source steel from reputable domestic and global mills with robust internal quality systems. Once materials arrive, we carry out full inspections. These cover chemical analysis, mechanical property checks, and non-destructive tests such as ultrasonic testing (UT) and magnetic particle testing (MPT), to confirm compliance with required standards.
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