Container House Nesting Specification

The container house nesting specification has not been explicitly mentioned in the provided reference information. However, as a crucial step in the manufacturing of container houses, container house nesting generally needs to adhere to the following general specifications:

I. Material Selection Specifications
The materials for container house nesting should be selected from steel that meets national standards, such as low-alloy high-strength structural steels Q235B or Q345B, to ensure sufficient strength, toughness, and corrosion resistance. The steel surface should be free from defects such as cracks, inclusions, and folds, and a quality certificate should be provided, clearly stating the chemical composition and mechanical properties of the material. Additionally, the connecting components (such as bolts and rivets) and sealing materials (such as silicone sealants) used during the nesting process should also comply with relevant standards to ensure firm connections and good sealing performance.

II. Dimensional Accuracy Specifications
Before nesting, the dimensions of each component should be precisely calculated based on the design drawings of the container house, and processing allowances should be reserved. When cutting and blanking, CNC cutting equipment should be used to ensure a flat cutting surface and verticality that meets requirements, avoiding subsequent assembly difficulties due to dimensional deviations. For key components (such as corner posts and end beams), the length deviation should be controlled within ±2mm, and the width and thickness deviations should be controlled within ±1mm to ensure the overall structural stability of the container house.

III. Welding Process Specifications
Welding is the core process in container house nesting and should be carried out strictly in accordance with the welding procedure specifications. Before welding, oil stains, rust, and other impurities in the weld area should be removed to ensure weld quality. During the welding process, the welding current, voltage, and welding speed should be controlled to avoid defects such as incomplete penetration, porosity, and cracks. For important welds, 100% ultrasonic flaw detection should be conducted to ensure that the internal quality of the welds meets standards. Additionally, after welding, the welds should be ground to remove spatter and burrs and improve the surface quality.

IV. Anti-Corrosion Treatment Specifications
Container houses are exposed to the outdoor environment for a long time and require anti-corrosion treatment to extend their service life. After nesting, the steel surface should be sandblasted to remove rust to meet the Sa2.5 standard, and then an anti-rust primer and topcoat should be applied. The dry film thickness of the anti-rust primer should be no less than 60μm, and the dry film thickness of the topcoat should be no less than 40μm. Weather-resistant coatings such as epoxy zinc-rich primer and polyurethane topcoat should be selected. For coastal or high-humidity areas, the coating thickness should be increased or more advanced anti-corrosion measures such as hot-dip galvanizing should be adopted.