"SpS method," a joining technique that does not use welding for existing circular steel pipes.
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Our company, in collaboration with the National University Corporation Toyohashi University of Technology (Toyohashi City, Aichi Prefecture / Acting President Akihiro Wakahara), has developed a non-welding method called "SpS (Steel-pipe Sandwiched) Method" for seismic retrofitting of steel-framed buildings, which joins existing circular steel pipe members (hereinafter referred to as existing pipes) with newly installed members using epoxy resin adhesive.
By using the SpS method to join the new members, on-site welding is eliminated, significantly reducing the risk of fire during construction. Furthermore, the need for cumbersome fire protection measures and checking for residual flames is also eliminated, increasing the flexibility of the construction schedule and potentially allowing for a significant reduction in on-site working hours depending on the conditions. This method is particularly suitable for facilities that prohibit open flames, such as those handling flammable materials or products, as well as factories and warehouses where construction is required to be completed in short time frames, such as during nights or holidays. The SpS method achieves a balance between safety and efficiency in construction.
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