Modular Design Welded H Section Steel Prefabricated Steel Structure Building
Precast steel structures refer to building systems where key steel components (beams, columns, trusses, purlins, and connecting plates) are precision-manufactured in a factory under controlled conditions, then transported to the construction site for rapid assembly via bolting and minimal on-site welding. Factory production and on-site foundation construction occur simultaneously, significantly shortening project timelines.
Product Specification & Parameters
| Items |
Materials |
Specification |
| Steel Frame |
H section column and beam |
Q355 steel, paint or galvanization |
| Wind resistant column |
Q355 steel, paint or galvanization |
|
| Secondary Bracing |
Roof purlin |
Q235B C/Z section galvanized steel |
| |
Wall purlin |
Q235B C/Z section galvanized steel |
| |
Tie bar |
Q235 round steel pipe |
| |
Knee brace |
Q235 angle steel |
| |
Roof horizontal bracing |
Q235 steel bar, paint or galvanized |
| |
Column vertical bracing |
PVC pipe |
| |
Purlin brace |
Q235 round bar |
| |
Knee brace |
Q235 angle steel |
| |
Casing pipe |
Q235 steel pipe |
| |
Gable angle steel |
Q235 M24 |
| Roof and Wall |
Wall and roof panel |
Corrugated steel sheet, sandwich panel |
| Protecting System |
Self tapping screw |
|
| |
Ridge tile |
Color steel sheet |
| |
Corner trim |
Color steel sheet |
| Fastener System |
Anchor bolts |
Q235 steel |
| |
High strength bolt |
Specifications determined according to steel structure design |
| |
Normal bolt |
|
| |
Nuts |
|
Key Advantages
Fast Construction
30–50% shorter project duration than concrete/traditional builds; mid-sized warehouses can be weather-tight in 6–8 weeks with less weather delays and earlier occupancy.
Superior Quality & Durability
CNC cutting/welding with strict tolerances (±1mm); high seismic/wind resistance; lifespan over 50–100 years with proper coating systems.
Cost Efficiency
Reduced on-site labor, minimal material waste, and lower foundation costs due to steel's lighter weight compared to concrete.
Flexibility & Expandability
Large clear spans without middle columns; easy length/width/height extension capabilities for future growth and modifications.
Sustainability
Steel recycling rate exceeds 90% compared to concrete's ~10%; lower construction emissions and reduced waste generation.
Main Applications & Examples
- Industrial: Factories, warehouses, logistics centers - the largest segment favoring large spans and fast delivery
- Commercial: Exhibition halls, shopping malls, aircraft hangars, sports stadiums
- Residential: Modular steel homes, apartment buildings, temporary housing
- Infrastructure: Highway service stations, railway terminals, agricultural barns
