Decoration keel quality appraisal

Decoration keel is a load-bearing material used to install decoration materials, usually used for wall and ceiling installation. It can support the weight of the decoration materials and increase the stability of the decoration materials, making the decoration stronger and more durable. In addition, the decorative keel also plays an important role, which is to facilitate the installation of wires and pipes, making them more beautiful and tidy. Therefore, the use of keels has become a necessary choice for modern decoration. There are many details that need to be paid attention to in the construction of
keels. Improper handling is very likely to cause safety hazards and affect later use.
In the case of decoration keel quality appraisal, Zhongke Testing can provide decoration keel quality appraisal services.

1. According to different production materials, keels can be divided into wood keels, light steel keels, aluminum alloy keels, steel keels, etc.
2, divided according to the use part, it can be divided into ceiling keel, vertical wall keel, floor keel and hanging keel.
3. Depending on the construction technology, there are load-bearing and non-load-bearing keels, that is, human-mounted keels and non-human-mounted keels.
4. As for light steel keels, according to their different models, specifications and uses, there are T-shaped, C-shaped, U-shaped, L-shaped keels, etc.

GB/T 11981-2008 Light steel keel for construction
JG/T 544-2018 Light steel keel type composite wall
CB 3186.1-1983 Hull structure Bilge keel
JC/T 2220-2014 Aluminum alloy T-shaped keel
JC/T 558-2007 Light steel keel accessories for construction

1. Cause: The owner signed a "House Decoration Contract" with the construction party. During the decoration process, the owner discovered that the "keels" used by the construction party to decorate the walls and ceilings were rusty, so he applied for a quality problem with the "keels".
2. Process: Our company organized appraisers to conduct a preliminary investigation at the owner's home and listened to the owner's statement. It was obvious at the scene that the surfaces of the keels used in the house had varying degrees of rust. Then, the "keel" located on the wall inside the basement and the "keel" located on the ceiling of the bathroom were randomly selected on site as representative samples for this appraisal. The results were compared with the corresponding national standards and a conclusion was drawn.
3. Conclusion: After discussion and comprehensive technical analysis of the relevant information involved in the case, on-site inspections and test data, the appraiser concluded that the amount of double-sided galvanizing and the thickness of the double-sided galvanized layer of the "keel" sample were insufficient to effectively protect the internal steel layer, resulting in accelerated corrosion of the "iron keel", resulting in rusting before the decoration was completed.