Export Process of Prefabricated House Finished Products

The export process of prefabricated house finished products mainly includes six key stages: requirement confirmation, design, factory production, container loading and transportation, overseas customs clearance and delivery, and on-site assembly.

Requirement Confirmation: When overseas customers inquire about prices, enterprises need to clarify core parameters such as project location, purpose, scale, decoration standards, climatic conditions, port information, and installation guidance requirements. For example, moisture-proof design needs to be strengthened in tropical regions, thermal insulation performance needs to be enhanced in cold regions, and port information directly affects the choice of transportation plans. This stage provides basic data support for subsequent design.

Design Stage: It is necessary to focus on the constraints of transportation conditions. Optimize component dimensions according to container sizes (e.g., the inner length of a 40-foot high-cube container is 12.03 meters), and balance the number of components loaded and the weight of individual components (usually not exceeding 25 tons). For demountable buildings, modular design should be used to take into account both the convenience of on-site installation and the efficiency of container loading, such as using bolt-connected structures instead of welding.

Factory Production: A three-level check of component dimensions, material specifications, and quantities needs to be completed, and for batch projects, component numbering and classification management should be implemented. For example, light steel keels need to be labeled with installation location numbers, and wall panels should be stacked by floor. A quality traceability system should be established in the production process to ensure that each batch of components complies with international standards (such as ISO 9001).

Container Loading and Transportation:

• Packaging Protection: Light steel keels are wrapped with anti-rust film, glass curtain walls are reinforced with wooden frames, and electronic components are sealed for moisture protection.
• Transportation Methods: Standard components are transported in 40-foot high-cube containers (with a load capacity of about 26 tons), oversized components are transported in frame containers or open-top containers, and large modules are transported on the decks of bulk carriers.
• Logistics Optimization: The space utilization rate is improved through three-dimensional container loading simulation software. For example, by cross-stacking L-shaped and rectangular components, the container loading capacity can be increased by 15%-20%.

Overseas Customs Clearance and Delivery:

• Document Preparation: Commercial invoices, packing lists, certificates of origin (FORM A or CO), and classification certificates for mobile houses (HS code 9406.0090) are required.
• Destination Services: A professional team is arranged to complete unloading, lifting and positioning (requiring a truck crane with a capacity of over 25 tons), and installation guidance to ensure that the horizontal error of the house does not exceed 3mm/m.

On-site Assembly: Only 10% of the workload, such as module splicing and pipeline connection, needs to be completed on the overseas site. The dry construction method (without concrete pouring) shortens the construction period by more than 60%. For example, the on-site assembly of a 200㎡ two-story house only takes 7-10 days, which is significantly more efficient than traditional construction methods.

A digital collaboration platform needs to be established throughout the entire process to achieve real-time data integration from design BOMs to production work orders and logistics tracking, so as to cope with the challenges of large volume and high customization of prefabricated houses.