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How to Splice Container Houses

Admin September 16, 2026

The splicing methods of container houses mainly fall into two categories: bolt-connected assembly and welding. Here are the specific splicing methods:

Bolt-Connected Assembly

  • Base Frame Installation: On a flat ground or workbench, connect the bottom corners of the container to the base beams using hexagon socket bolts, but do not tighten them immediately. After alignment, ensure that the diagonal difference of the base frame is ≤3mm, and then tighten the bolts. Install the π-shaped secondary beams according to the positions of the positioning holes on the long beams, and fix them with m5.519 self-tapping screws. The top of the π-shaped secondary beams and the base beams should be fixed with st4.816 round-head self-drilling screws.
  • Floor Installation: Lay the floor base plates (magnesium oxide boards) along the 6-meter direction. Pre-drill holes at both ends of the base plates and cut the corners according to the marked chalk lines. Mark the midline of the π-shaped beams, and start laying the floor from one end, ensuring that the joint between two floor panels aligns with the midline of the π-shaped beams. After laying the floor, mark the midline of the π-shaped beams on the floor with chalk lines, and fix the floor with st4.2*38 cross-head self-tapping screws along the chalk lines, with a nail spacing of 300 - 350mm. Sand the entire floor, especially the panel joints, apply PVC special floor adhesive, wait for 10 - 15 minutes, lay the floor covering, expel the air between the floor covering and the base plates, and if possible, weld the joints of the floor covering.
  • Overall Assembly: The quick-assembly container houses adopt a modular design, with standardized components prefabricated in the factory. No welding or complex construction is required on-site, and assembly can be completed like building blocks. Lift each module into place and complete the assembly using bolts and other connectors.

Welding

  • Base Welding: Weld the main crossbeams around the top and bottom of the container using channel steels (such as 5X10 channel steels), similar to the ring beams in house construction.
  • Column Welding: The columns of the container house should have a thickness of no less than 1mm and require professional equipment for profiling. Ready-made columns are available on the market. Weld the columns to the base, etc. The channel steels and columns form the skeleton of the entire container house, providing support and determining the sturdiness of the house. However, welded container bodies are generally welded into shape as a whole in the factory and are suitable for scenarios requiring frequent lifting and moving. On-site assembly rarely involves overall welding operations and is more about connecting and fixing modules.