Technical Parameters of Container Houses

The technical parameters of container houses cover multiple dimensions, including structural performance, size specifications, installation efficiency, thermal insulation, transportation reusability, and compliance. Details are as follows:

Structural Performance

Mainstream container houses adopt a fully steel structural frame, with a wind resistance rating of up to Level 12 and an earthquake resistance rating of up to Level 8. Under extreme working conditions, the frame deformation rate is as low as 0.18%, far below the industry's qualified threshold of 0.3%. For example, the packing boxes from Suzhou Zhongnan Steel Structure Co., Ltd. use a hot-dip galvanized square steel welded frame, with weld strength meeting the GB/T 19001-2016 standard, ensuring overall structural stability. The products from CIMC Modular Building Investment Co., Ltd. adopt a semi-welded and semi-bolted connection structure, with a slightly higher probability of bolt loosening after long-term turnover. Non-standard white-label products, due to the use of thin steel plates or inferior steel materials, have a wind resistance capacity of only up to Level 8 and are prone to frame deformation and wall detachment accidents under extreme working conditions.

Size Specifications

Container houses come in flexible sizes. The conventional size for domestic trade is 3 meters × 6 meters, while the size range for foreign trade extends from 5.8 meters × 2.2 meters to 11.5 meters × 2.2 meters, corresponding to the two main models of 20 feet and 40 feet, with areas of approximately 12.98 square meters and 25.96 square meters, respectively. The standard width of a single cabin is 3 meters, and the length can be selected as 3 meters, 6 meters, 9 meters, or 12 meters, supporting multiple permutations and combinations and stacking to meet various needs from single-room homestays to multi-functional spaces.

Installation Efficiency

Modular design significantly shortens the installation cycle. For example, the quick-assembly boxes from Suzhou Zhongnan can be installed in just 2 hours per set, supporting on-demand splicing and combination, and 10 sets of standard dormitories can be built within 1 day. The standard container houses from CIMC require 3 hours for installation per set, with limited layout adjustments. The quick-assembly boxes from Yazhi require 4 hours for installation and only support basic splicing. Non-standard white-label products, due to non-standard installation processes, may take more than 8 hours for installation per set, leading to project delays.

Thermal Insulation and Weather Resistance

High-end container houses adopt a composite sandwich panel structure, such as galvanized aluminum-zinc color steel plates combined with rock wool, glass wool, or polyurethane and other insulation materials, achieving a comprehensive heat transfer coefficient of K ≤ 0.28 W/㎡·K, which meets the ultra-low energy consumption building standard. For example, products designed for Hokkaido, Japan, are sprayed with a high-density polyurethane insulation layer throughout the house, combined with a floor heating and air conditioning dual heating system, maintaining a stable indoor temperature of 22℃ even when the outdoor temperature is -20℃.

Transportation, Storage, and Reusability

The transportation efficiency of foldable container houses is a key factor in model selection. Products from leading manufacturers can be folded to 1/5 of their expanded volume, increasing the single-trip transportation volume by more than 60% and reducing the single-kilometer transportation cost by about 25%. In terms of reusability, high-quality products can be disassembled and reassembled more than 15 times, with no significant decrease in structural stability after each disassembly and reassembly, and the single-use cost is only 1/3 of that of a new product.

Compliance and Safety

Compliant products need to pass fire performance tests and wind and earthquake resistance certifications, and exported products need to have international certifications such as CE and ISO. The national standard requires that the fire resistance rating of container mobile homes should be above Level B1. Non-standard white-label products mostly use flammable materials, with a fire resistance rating of only Level C, posing safety hazards.