ASTM A36 Steel Structure Steel Residential Building Steel Structure
APPLICATION
Steel Residential Building:Exterior Designs' steel frame homes are well known for their high strength, light weight, fast installation, long life and good architectural design flexibilities.
Steel Structure House:Advantages of steel home construction energy saving,nvironmental protection,thermal insulation,short buildin period.
Steel Structure Warehouse: Steel structure metal building warehouse with being large span, high space utilization, rapid installation, easy to design.
Steel Structure Factory Building: The load capacity of steel framework factory building is high, the span can be large and no columns are needed (which is very suitable for workshop use).
PRODUCT DETAIL
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 | High seismic node design (bolted connections instead of brittle welds), section optimized to minimize self-weight for local transport |
| Steel Column | H300×300 ~ H500×500 (ASTM A36) | Supports frame and floor loads | Seismic connectors embedded in the base, galvanized surface (zinc coating = 85μm) for high-humidity environment corrosion resistance. |
| Crane Beam | W24×76 ~ W30×99 (ASTM A572 Gr.60) | Load-bearing for industrial crane operation | Heavy-duty design (appropriate for 5~20t cranes), end beam with shear-resistant connecting plates. |
2. Enclosure system products (weatherproof + anti-corrosion)
Roof purlins: C12×20~C16×31 (hot-dip galvanized), spaced 1.5~2m apart, suitable for color-coated steel plate installation, and resistant to typhoon loads up to level 12.
Wall purlins: Z10×20~Z14×26 (anti-corrosion painted), with ventilation holes to reduce humidity in tropical factories.
Support system: Bracing (Φ12~Φ16 hot-dip galvanized round steel) and corner braces (L50×5 steel angles) enhance the structure's lateral resistance to withstand hurricane-force winds.
3. Supporting auxiliary products (localized construction adaptation)
1.Embedded parts: Steel plate embedded parts (10mm-20mm thick, hot galvanized), suitable for the concrete foundation widely used in Central America;
2.Connectors: High strength bolts (grade 8.8, hot dip galvanized), no need to weld on site, which save the time for construction;
3.Water-based fire retardant paint (fire durability≥1.5h) and acrylic anti-corrosive paint (UV protection, life duration≥10 years) fulfilling local environmental protection regulations.
STEEL STRUCTURE PROCESSING
| Processing Method | Processing Machines | Processing |
| Cutting | CNC plasma/flame cutting machines, shearing machines | CNC plasma/flame cutting (steel plates/sections), shearing (thin steel plates), with dimensional accuracy control. |
| Forming | Cold bending machine, press brake, rolling machine | Cold bending (for C/Z purlins), bending (for gutters/edge trimming), rolling (for round support bars) |
| Welding | Submerged arc welding machine, manual arc welder, CO₂ gas-shielded welder | Submerged arc welding (for H-shaped columns/beams), manual arc welding (for gusset plates), CO2 gas shielded arc welding (for thin-walled parts) |
| Holemaking | CNC drilling machine, punching machine | CNC drilling (for bolt holes in connecting plates/components), punching (for small holes in batches), with tolerances for hole diameter and position controlled. |
| Treatment | Shot blasting/sand blasting machine, grinder, hot-dip galvanizing line | Rust removal (shot blasting/sand blasting), weld grinding (for deburring), hot-dip galvanizing (for bolts/supports) |
| Assembly | Assembly platform, measuring fixtures | Pre-assembly of components(columns + beams + supports), disassembly after dimension checks for shipping. |
STEEL STRUCTURE TESTING
| 1. Salt spray test (core corrosion test) Standards B117 (condensed or cyclic salt spray) / ISO 11997-1 (cyclic salt spray), the Central American coast high-salt environment. |
2. Adhesion test Cross-hatch test using ASTM D3359 (cross-hatch/grid-grid, to determine peeling level); pull-off test using ASTM D4541 (to measure peel strength between coating and steel substrate). |
3. Humidity and heat resistance test Standards ASTM D2247 (40°C/95% RH, for the purpose of avoidance of blistering and cracking of the coating in rainy seasons). |
| 4. UV aging test Standards ASTM G154 (to simulate strong UV exposure in rainforests, to prevent fading and chalking of the coating). |
5. Film thickness test Dry film thickness was measured using ASTM D7091 (magnetic thickness gauge); wet film thickness was determined according to ASTM D1212 (to verify that corrosion resistance had been achieved to the required film thickness). |
6. Impact strength test Standards ASTM D2794 (drop-hammer impact, protect from damage in shipping/handling. and installation). |
SURFACE TREATMENT
Surface Treatment 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 AND SHIPPING
Packaging:
Steel structures are tightly packed with a a protective layer between to protect surface and the structure during the handling and transportation. The components and packing are normally wrapped with waterproof material (such as plastic film or rust-proof paper) while the smaller accessories are packed in wooden boxes. But all the bundles or segments are individually tagged, so you can safe unload and competently install on the site.
Transportation:
Static steel can be shipped in containers or bulk vessels depending on size and destination. Strapping is often used for large or heavy items, which are strapped using steel straps with wood on either edge to keep the items from moving and getting damaged in transit. All logistics are handled under international transport standards for delivering on time and safe arrival for the long distance shipping, even international shipping.
OUR ADVANTAGES
1. Overseas Branch & Spanish Language Support
We have overseas branches with Spanish-speaking teams to provide full communication support for Latin American and European clients.
Our team assists with customs clearance, documentation, and logistics coordination, ensuring smooth delivery and faster import procedures.
2. Ready Stock for Fast Delivery
We maintain sufficient inventory of standard steel structure materials, including H beams, I beams, and structural components.
This enables shorter lead times, ensuring customers receive products quickly and reliably for urgent projects.
3.Professional Packaging
All products are packed with standard seaworthy packaging — steel frame bundling, waterproof wrapping, and edge protection.
This ensures safe loading, long-distance transport stability, and damage-free arrival at the destination port.
4.Efficient Shipping & Delivery
We work closely with reliable shipping partners and provide flexible delivery terms such as FOB, CIF, and DDP.
Whether by sea, rail, we guarantee on-time shipment and efficient logistics tracking services.
FAQ
Regarding Material Quality
Q: What are the quality standards of your steel structures?
A: Our steel structure is complied with American Standards such as ASTM A36, ASTmA572 etc. Carbon steel grades and ASTM specifications For example, ASTM A36 is a carbon structural, general purpose, A588 is a high – weather – resistant structural intended for use in harsh atmospheric environments.
Q: How could you ensure the quality of steel materials?
A: We purchase the steel material from the well-known domestic or abroad the steel company which have the quality assurance system. All those products are more or less rigidly tested, in fact also the chemical composition is analyzed, the mechanical properties are tested as well as through some non-destructive testing, among others by Ultrasonic Testing (UT) and Magnetic Particle Testing (MPT), to determine if the quality is meeting the related standard.
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 13652091506
