Modular Design Prefabricated Steel Structure Warehouse with Q235B/Q355B Steel and Customizable Dimensions
prefabricated steel warehouse structure
,industrial bolted steel building
,modern steel frame factory construction
- High Efficiency: The modular design approach allows for streamlined manufacturing processes, reducing production time and increasing operational output.
- Superior Quality: Each module is manufactured under controlled conditions, ensuring consistent quality across all units.
- Cost-Effective: The standardization of modules allows for economies of scale in production, leading to cost savings that can be passed on to the end user.
- Customizability: Despite the standardization, the modular design allows for a high degree of customization to meet specific customer requirements.
- Easy Installation: The pre-fabricated modules can be quickly and easily assembled on site, reducing construction time and associated costs.

| Component | Material Specification |
|---|---|
| Steel Frame | H section steel | Q235B/Q355B steel plate thickness: 8-30mm |
| Welding | Automatic submerged arc welding |
| Rust removal | Sand blasting |
| Surface finish | Alkyd or Epoxy paint or Galvanized |
| Intensive bolt | M20, Grade 10.9 |
| Supporting System | Angle brace: L50x4, Steel Q235, processed and painted Horizontal brace: Φ20, Steel Q235, processed and painted Column brace: Φ20, Steel Q235, processed and painted Tie rod: Φ89*3, Steel Q235, processed and painted Ordinary bolt: M12 Galvanized bolt |
| Roof | Purlin: C160*60*2.5, Steel Q235, galvanized Roof panel: Sandwich panel or corrugated steel sheet Sky light: 6mm thick reinforced fiber plastic Accessories: Glass cement, self-tapping screws, etc. Edge cover: 0.4mm steel sheet profile trimming Gutter: 0.4mm thick sheet steel profile or galvanized sheet Down pie: Φ110PVC |
| Walls | Purlin: C160*60*2.5, Steel Q235, galvanized Wall: Sandwich panel or corrugated steel plate Accessories: Glass cement, self-tapping screws, etc. Edge cover: 0.4mm steel sheet profile trimming Ventilation: Roof unpowered ventilator Doors & windows: Rolling door/sliding door PVC/alu/steel/window |
Qingdao Yidongxiang Steel Structure Co., Ltd. was founded in 2002. We are a specialized manufacturer focusing on prefabricated steel buildings, with over 20 years of experience in the steel construction industry.
Equipped with a professional engineering team, we deliver one-stop customized services covering architectural design, scheme optimization, component production, and overseas installation guidance. Our steel building solutions have been delivered to over 80 countries and regions across North & South America, Asia, Southeast Asia and Africa, with dozens of completed local projects worldwide.
Adhering to the core values of innovation, collaboration and integrity, we keep supplying reliable steel structures and thoughtful after-sales support for global partners. We excel at flexible tailor-made construction plans to match clients' different budget and land demands.
Our company has obtained CE certification (EN 1090 certificate), ISO9001, ISO14001, ISO45001 certification. We also have obtained:
- Class one for the steel structure engineering professional contracting
- Class one for building decoration engineering professional contracting
- Class two for building engineering construction general contracting
- Class two for municipal public Engineering construction general Contracting
- Class two for fire fighting facilities engineering professional contracting
- Class two for building curtain wall engineering professional contracting
- Class three for Urban and road lighting engineering professional contracting
- Class GB1, GB2, GC2 for special equipment pressure pipeline Installation
- Construction labor and other qualifications
Our company has been rated as a national AAA level credit enterprise in terms of quality, service and reputation.

- Thickness tolerance <0.25mm
- Yield and tension strength testing in-house
- Third party inspection certificate
- Supply traceable mill certificate
- 100% testing dimension tolerance <1mm
- 20% sample welding line ultrasonic testing, no fault, full penetration
- 20% magnetic powder testing, no bubble, no defect, Smooth and Full
- Supply third-party inspection assistance
- Shot blasting grade Sa. 2.5 Metal luster, no rust, no oil dirt, no welding spatter, Roughness >75um
- Paint primer within 5 hours after shot blasting, Holiday-free coatings, smooth, No dust, Dry Film Thickness (DFT) >75UM
- Structural steel fabrication, painting, galvanizing, pre-assembly
- Designing, fabrication and installation for Prefabricated steel structure building
- Deepen or design the fabrication drawing or shop drawing based on your architectural drawing and construction drawing
- We offer reasonable advice for usage, maintenance and technical improvement
All the structure will be well packed with standard package suitable for ocean transport and loaded into 40'HQ.
All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods from being damaged.

Please provide the following information for an accurate quotation:
| Item | Required Information |
|---|---|
| 1 | Location (where will it be built?) - country, area |
| 2 | Size: length*width*height - mm*mm*mm |
| 3 | Wind load (max. wind speed) - kn/m2, km/h, m/s |
| 4 | Snow load (max. snow height) - kn/m2, mm |
| 5 | Anti-earthquake - level |
| 6 | Brickwall needed or not - If yes, 1.2m high or 1.5m high |
| 7 | Thermal insulation - If yes, EPS, fiberglass wool, rockwool, PU sandwich panels will be suggested; if not, metal steel sheets will be used (lower cost) |
| 8 | Door quantity & size - units, width(mm)*height(mm) |
| 9 | Window quantity & size - units, width(mm)*height(mm) |
| 10 | Crane needed or not - If yes, units, max. lifting weight(tons); max. lifting height(m) |