Relocatable Prefab Modular Buildings for Residential House
Basic Information
| Model No. | KXD-SSB27 |
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| Member of Engineering Team | 20 |
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| Quality Control | Daily |
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| Life Cycle | 50 Years |
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| Construction Period | 60 Days |
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| Project Management | Turnkey Solution |
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| Engineering Tools | CAD |
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| Type | H-Section Steel |
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| Standard | GB |
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| Forming | Hot-Rolled Steel |
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| Connection Form | Bolt Connection |
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| Residential Wall Structure | Top Wall Beam |
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| Application | Steel Workshop, Steel Structure Platform |
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| Warranty | 30-Year Limited Warranty |
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| Transport Package | Seaworthy Package |
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| Specification | SGS / ISO/BV |
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| Trademark | KXD, Carbon Structural Steel |
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| Origin | China |
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| HS Code | 9406000090 |
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| Production Capacity | 2000ton/Month |
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Product Overview
Prefabricated Construction and modular homes are sectional prefabricated buildings, or houses, that consist of multiple sections called modules. "Modular" is a method of construction differing from other methods (e.g. "stick-built" and other methods such as off-site construction). The modules are six sided boxes constructed in an exterior (sometimes, remote) facility, then delivered to their intended site of use. Using a crane, the modules are set onto the building's foundation and joined together to make a single building. The modules can be placed side-by-side, end-to-end, or stacked, allowing a wide variety of configurations and styles in the building layout.
Modular buildings, also called prefabricated buildings, differ from mobile homes, which are also called manufactured homes, in two ways. First, modular homes do not have axles or a frame, meaning that they are typically transported to their site by means of flat-bed trucks. Secondly, modular buildings must conform to all local building codes for their proposed use, while mobile homes, made in the United States, are required to conform to federal codes. There are some residential modular buildings that are built on a steel frame (referred to as on-frame modular) that do meet local building codes and are considered modular homes, rather than mobile homes.
Key Advantages
- Speed of construction/faster return on investment - Reduces overall completion schedule by up to 50%
- Indoor construction - Assembly independent of weather, increasing work efficiency
- Ability to service remote locations - Cost-effective for areas far from industrial centers
- Low waste - Precise material quantities reduce construction waste
- Environmentally friendly construction process - Reduces waste and site disturbance
- Flexibility - Can continually add to modular buildings, including creating high rises
Technical Specifications
Single Module Dimensions
- ISO standard dimensions of 20 feet STANDARD containers - optionally 10 up to 30 feet
- Length = 6.058 mm (optionally 3.048 - 9.100 mm)
- Width = 2.438 mm (optionally 3.000 mm)
- Exterior height = 2.591 mm (optionally 2.791 mm or 3100 mm)
- Inner height = 2.300 mm (optionally 2.500 mm or 2800 mm)
Construction Details
- Container construction: ZINCED metal profiles 3 mm connected with screws
- Container painting: On customer wish in RAL color
- Container floor: Without forklift pockets or optional with forklift pockets
Wall Panel Options
- 50 mm polyurethane panel, externally micro-corrugated RAL 9002, internally smooth RAL 9010 (white)
- Option: 60 mm mineral wool, both side plastificated in RAL 9002
- Option: 60 mm mineral wool, both side plastificated in RAL 9002, internally enriched chipboard 100 WHITE010 (white)
- Option: 80 mm polyurethane panel, both side plasticated steel plate RAL 9010 (white)
- Option: 100 mm polyurethane panel, both side plasticated steel plate RAL 9010 (white)
- Option: 100 mm mineral wool, both side plasticated steel plate RAL 9010 (white)
- Option: 120 mm mineral wool, both side plasticated steel plate RAL 9010 (white)
Thermal Performance
| Component | U-Value (W/m²K) |
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| Floor | 0.37 |
| Roof | 0.39 |
| Wall Panels | 0.41 |
| Windows | 2.40 |
Manufacturing Process
H-Section Manufacturing Equipment and Process:
Steel plate cutting → H section assembly → Automatic welding → H section strengthening → Assembly → Manual welding → Shot blasting → Painting → Storage
Process Details
I. Steel Plate Cutting
Steel plates are checked and cut using CNC equipment. High purity gases ensure smooth cutting surfaces without notches and slags.
II. H Section Steel Assembly
Assembly process uses imported H section production line with hydraulic positioning system for precise alignment.
III. Automatic Welding
H section steel members are welded using gantry-type submerged arc automatic welding machines with preheating for ultra-thick plates.
IV. H Section Steel Strengthening
Correction of flange flatness using specialized strengthening machines with controlled flame temperature (600-800°C).
V. Simulated Assembly
Components undergo pre-assembly and quality checks before final assembly.
VI. Manual Welding
Precision manual welding for complex joints and final assembly.
VII. Shot Blasting
Surface preparation using 10-ramming heads shot blasting machine achieving Sa2.5 grade.
VIII. Painting
Surface coating with specified thickness: 150μm indoor, 125μm outdoor with controlled application using airless sprayers.
Quality Control Standards
Purpose: To ensure welding quality and meet technical requirements of welded members.
Application Scope: Manual arc welding, CO2 arc welding, mixed gas arc welding, submerged arc welding and electroslag welding.
Welding Groove Design Considerations:
- Minimize the amount of filler metal
- Easy for beveling
- Convenient for welding operation and slag removal
- Minimize welding stress and deformation
Technical Illustrations
