Case

• by admin
• 2025-10-17

625㎡ warehouse in Bosnia and Herzegovina

The Bosnia and Herzegovina client steel structure warehouse project, provided by Yirong steel building supplier as a one-stop solution, adopts the core design concept of efficiency, durability, and energy conservation, and accurately matches the collaborative material selection between the enclosure structure and the main frame. The wall panels and roof panels of the warehouse are made of 75mm thick PU (polyurethane) composite panels, combined with H-shaped steel columns and beam frames, to create an industrial storage space that balances functionality and economy.

As the core material of the warehouse enclosure system, the application of 75mm PU panels can be regarded as the technical highlight of the project.

Firstly, the excellent thermal insulation performance significantly reduces storage operating costs: the thermal conductivity of PU sandwich panel is only 0.022-0.027W/(m · K), far lower than that of traditional color steel plate (about 0.04-0.06W/(m · K)). A stable thermal resistance layer is formed with a thickness of 75mm, effectively blocking external high temperature conduction in summer and reducing internal heat loss in winter. With the enclosed design of the warehouse, indoor temperature fluctuations can be controlled within ± 3 ℃, significantly reducing the energy consumption of refrigeration/heating equipment. Long term use can save customers more than 30% of energy expenses.

Secondly, the lightweight and high-strength characteristics optimize the load capacity and construction efficiency of the main structure: the density of PU panel surface is only about 45kg/㎡ (including the panel), which is only 1/20 of the same thickness concrete board, but it has excellent compressive strength (≥ 1.0MPa) and impact resistance (10kg sand bag free fall at a height of 1 meter without penetration), which not only reduces the bearing pressure of H-shaped steel columns and beams, but also facilitates quick lifting and splicing on site. The single panel body can be fixed to the purlin through the locking process, which increases the installation efficiency by 40% compared to traditional color steel plates, significantly shortens the construction period, and meets the customer's demand for fast delivery.

Thirdly, all-weather protection capability provides reliable guarantee for cargo storage: the outer layer of PU panels are made of 0.5mm thick aluminum zinc plated steel plate, and the inner layer is made of fire-resistant and flame retardant polyurethane core material. The overall fire resistance rating is B1 (self extinguishing within 3s after ignition), which can withstand the occasional rainstorm, hail and other extreme weather in Bosnia and Herzegovina. At the same time, the board joints are treated with special sealant and waterproof flashing board to effectively block rainwater infiltration. Combined with the internal preset ventilation window design, it avoids the problem of mold growth caused by moisture in traditional storage and significantly extends the storage period of goods.

Fourthly, the ultra long durability reduces the whole life cycle maintenance cost: PU panels core material is added with anti-aging agent and ultraviolet absorber, and the surface steel plate is phosphatized and rust proof, which has been tested to have a service life of more than 25 years in a salt spray environment (simulated coastal climate), far exceeding the 10-15 year period of ordinary color steel plate, greatly reducing the frequency and cost of later renovation and leak repair, and meeting customers' core demands for low-cost operation.

It is worth mentioning that Yirong steel building supplier provides one-stop services from design, production to installation for this project. The Yirong team accurately matches the technical parameters of 75mm PU panels based on the local climate characteristics and storage function requirements in Bosnia and Herzegovina, and forms a rigid flexible structural system with the H-beam frame. The high strength of H-beam and the lightweight flexibility of PU sandwich panel complement each other, ensuring the overall stability of the warehouse and improving seismic performance through material synergy. It can withstand local earthquakes with a basic intensity of 6 degrees, truly achieving multiple goals of structural safety, functional optimization, and cost control.