The construction of a steel structure project is an extremely complicated and comprehensive process due to its wide scope. Therefore, the quality of the metal warehouse peb structure itself cannot be controlled, and its specific performance is as follows.
1. The quality is generally jeopardized
For example, aspects such as design, raw materials, machinery, climate, construction process, operation steps, operation methods, technical measures, and intelligent systems will affect the construction quality of prefabricated metal warehouses.
2. The quality is easy to fluctuate
Because the production of metal warehouse peb structures is not like other products, there is a relatively fixed production automation production line, standardized production process and sound non-destructive testing technology, which proves to be feasible. At the same time, due to critical factors and system elements that affect the construction quality, such as material differences, welder voltage flow changes, operation and environmental damage, instrument panel failures, etc., will cause quality fluctuations and cause quality safety accidents.
3. Product identification is incorrect
In the manufacturing and installation process of prefabricated metal warehouse, due to the large amount of processing technology, there are a certain number of hidden decoration projects, some of which have a certain timeliness. If the item is not inspected in time, after seeing the surface later, it is very easy to judge whether the substandard product is up to standard, resulting in a second judgment error. That is, qualified products are identified as unqualified products, such as checking high-strength bolts after the final tightening.
4. It cannot be disassembled after inspection
Metal warehouse projects are generally less likely to be dismantled after installation is complete. If it is an internal quality problem or a replacement part. Prefabricated steel warehouses generally only use appearance non-destructive testing technology. Even if there are any quality problems, it is generally impossible to “remove and replace”.
5. Anti-corrosion coating
The anti-corrosion of steel structures is mainly divided into two categories: anti-air corrosion and anti-soil corrosion. Coatings are generally divided into four layers: top coat, tie coat, inner coat and surface coat. In addition to controlling coating thickness and coating process requirements, engineers must also understand the basic characteristics of various coating materials in order to effectively operate regulated projects. If you are in a coastal city and an area with a lot of sunlight, it is important to pay attention to choosing architectural coatings that can resist ultraviolet light, salt and acid attack.
6. Fireproof architectural coatings
The fire protection requirements of steel structure industrial warehouses are relatively high, and its fire resistance level is closely related to the fire resistance level. Under the same fire resistance rating, different components such as beams, columns and plates have different fire resistance ratings. However, during the construction process, all components are often coated with the same thick fireproof coating, which is easy to leave safety hazards. The engineer should pay enough attention to this matter, and should carefully compare the drawings with the main structural components, carefully pay attention to the fire resistance and the thickness of the fire protection coating.
7. Embedded parts
It does not conform to the engineering drawings and specifications, the aspect ratio exceeds the specification, and the spacing exceeds the specification. Embedded anchor screws are an important work item on the site of the prefabricated structure of the metal warehouse. It is necessary to require the construction company to prepare a special construction schedule and carry out the construction.
Therefore, we should attach great importance to and strictly control the quality of prefabricated steel structure warehouses, and carry out quality control during the construction process of the entire project.
Send us the inquiry form