Prefabricated House Delivery Process

The prefabricated house delivery process typically includes eight core steps: design planning, production scheduling, factory acceptance, packing and transportation, on-site confirmation, transportation and entry, installation and commissioning, and final acceptance and delivery. The specific process is as follows:

1. Design Planning and Scheme Freezing Complete structural design and functional layout according to project requirements, clarify details such as house type, appearance, and material configuration, and form standardized drawings and configuration lists. The scheme should be frozen after being signed and confirmed by the customer to avoid subsequent modifications affecting production progress. This stage needs to balance building codes with personalized needs, such as reserving positions for water and electricity interfaces or special decorative requirements.

2. Production Scheduling and Factory Prefabrication Based on the design documents after scheme freezing, the factory formulates a detailed production plan, specifying the manufacturing cycles and factory dates for modules such as wall frames, floor ceilings, and water and electricity pipelines. Industrial assembly line operations are adopted, and integrated construction is completed through high-precision CNC equipment to ensure that the dimensional errors of each component are controlled within millimeters. The core advantage of this stage is that the factory prefabrication rate is as high as 90%, significantly reducing on-site construction errors.

3. Factory Quality Acceptance After production is completed, multi-dimensional inspections are carried out: appearance inspections cover coating uniformity and door and window sealing; functional tests include key indicators such as circuit continuity, drainage slope, and structural load-bearing. After passing the acceptance, a unique identification number is affixed for subsequent transportation tracking and installation positioning.

4. Packing and Transportation Plan Preparation When preparing the packing list, it is necessary to mark the module number, total number of pieces, location of fragile items, and protection requirements (e.g., glass needs to be packed separately). Transportation route planning needs to consider restrictions such as bridge height limits and road turning radii. For inter-provincial transportation, maritime containers are preferred to reduce costs. The arrival time needs to be coordinated with the on-site construction progress to avoid additional costs caused by module retention.

5. On-site Condition Pre-confirmation Before installation, it is necessary to check parameters such as site hardening strength (≥C25 concrete), road width (≥4 meters), and lifting area load-bearing capacity. For multi-story buildings, it is also necessary to confirm that the position deviation of foundation embedded parts does not exceed ±5mm to ensure precise module docking.

6. Transportation and Entry and Lifting into Place Low-flatbed trailers are used to transport extra-long modules, and 200-ton truck cranes are used on-site for lifting. During operation, the horizontal inclination angle of the module should be kept ≤5° to avoid structural deformation. After being placed in position, temporary fixation should be carried out immediately to prevent displacement caused by strong winds.

7. Installation and Commissioning and Node Acceptance After completing bolt connections and waterproof sealant sealing between modules, conduct joint commissioning of the water and electricity systems: test the insulation resistance of the lighting circuit ≥0.5MΩ and the water drainage pipe for water leakage. Key nodes need to retain video records as a basis for subsequent quality assurance.

8. Final Acceptance and Delivery The overall structural acceptance focuses on checking the verticality deviation (≤H/1000) and the strength of the connections; functional acceptance covers indicators such as air conditioning cooling capacity and fresh air system air volume. After confirming the rectification list, sign a quality assurance agreement (usually covering 1-year structural quality assurance and 5-year waterproof quality assurance) to complete the delivery procedures.

Through standardized operations and full-process control, this process achieves delivery in only 45-60 days from order placement, shortening the construction period by more than 60% compared to traditional buildings, and is suitable for scenarios with high efficiency requirements such as emergency housing and cultural tourism homestays.