Q235B Steel Frame Prefabricated Multi-Storey Building with Painted/Galvanized Surface - 4-12 Storey Commercial Construction
Price:
30-80 USD per sqm
MOQ:
200 square meters
Delivery Time:
35-55 days
Brand:
KXD Steel Structure
Product Description
An ideal solution for commercial construction, multi-storey steel buildings offer faster construction speeds compared to conventional buildings due to high levels of material pre-fabrication, design accuracy, quality control, and risk-reduced construction processes.
Multi-Storey Building Classifications
Based on height requirements and various factors, multi-storey buildings are categorized as follows:
- Low-Rise Building: Typically less than four storeys, utilizing elevators and stairs for vertical circulation
- Mid-Rise Building: Ranging from 4 to 12 storeys
Technical Parameters
Structure Frame
| NO | Item | Specification |
|---|---|---|
| A. Main Steel Structure | ||
| 1 | Column, Beam | Q345B, Blasting+Painting or galvanized |
| 2 | Roof & Wall Purlin | C Profile Steel, Blasting+Painting or galvanized |
| B. Bracing | ||
| 1 | Tie Bar | φ89*3.0, Blasting+Painting or galvanized |
| 2 | Roof Support | φ20, Blasting+Painting or galvanized |
| 3 | Bracing Bar | φ12, Blasting+Painting or galvanized |
| 4 | Knee Bracing | L50*4, Blasting+Painting or galvanized |
| 5 | Sleeve Pipe | φ32*2.5, Blasting+Painting or galvanized |
| 6 | Angle Steel | L40*3, Blasting+Painting or galvanized |
Floor Structure
The floor system provides sufficient stability, strength, and rigidity while minimizing slab thickness to maximize indoor clear height. Corrugated metal floor deck-concrete composite floor systems are widely implemented for optimal performance.
Applications
Technical Support & Services
Our comprehensive technical support and services ensure successful implementation and operation throughout the building lifecycle:
- Structural design and analysis
- Construction planning and management
- Cost estimation and budgeting
- Quality assurance and control
We are committed to delivering high-quality, durable steel buildings that meet specific requirements, with technical support available throughout the entire building lifecycle for smooth and efficient processes.
Weld Specifications
Fillet Weld Size Selection
Based on industry standards and practical experience, fillet weld size requirements are as follows:
| Fillet Weld Form | K Value (Weld Size) | Application |
|---|---|---|
| Fillet weld without groove | K=(0.7~1)t and ≤15mm | Most steel structure buildings |
| Fillet weld without groove | K=(0.5~0.6)t | Strengthening ribs and secondary members |
| Fillet weld with groove (CJP and PJP) | K=t/4 and K≤10mm | Most steel structure buildings |
| Fillet weld with groove (CJP and PJP) | K=t/2 and K≤10mm | Important members (crane beams, web-flange connections) |
Notes:
- t = thinner weld member thickness
- For concave fillet welds, actual measured value should be 1-3mm higher than specified fillet weld size
- Drawing-specific weld sizes are strictly followed
Minimum Fillet Weld Size Chart
| Parent Metal Thickness (t) mm | Minimum Fillet Weld Size mm |
|---|---|
| t ≤ 6 | 3 (minimum 5 for crane beams) |
| 6 | 5 |
| 12 | 6 |
| t > 20 | 8 |
Packing & Shipping
Product Packaging
Multi-storey steel building components are packaged in sturdy wooden crates or pallets to ensure safe transportation. All elements are carefully packed to prevent transit damage.
Shipping
Products are shipped via reliable freight carriers with costs calculated based on destination and weight. Shipping confirmation with tracking information is provided upon order confirmation.
Frequently Asked Questions
Are you a manufacturer or trading company?
We are a manufacturing factory located in Qingdao city, near Qingdao port, with 3 workshops covering steel structure to wall and roof sheet production.
How about your quality control?
We hold ISO & CE certifications. Our quality process includes cutting, bending, welding, shot blasting, ultrasonic testing, packing, storing, and loading to eliminate defects.
Is third party inspection available?
SGS, BV, TUV, and other third-party inspections are available based on client requirements.
How about your delivery time?
Typically 30-45 days, depending on order quantity. Partial shipments are available for large orders.
What about the installation?
We provide detailed installation drawings and supervisor guidance. Turnkey project services are available for certain projects.
How to ensure the product matches our requirements?
Our sales and engineering teams provide suitable solutions with proposal drawings, shop drawings, 3D drawings, material photos, and completed project photos for comprehensive understanding.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Qingdao KXD Steel Structure Co., Ltd
Location
NO. 15 CHANGJIANG ROAD, PINGDU, QINGDAO, SHANDONG
Contact Person
David