Just now, I saw a netizen ask about the meaning of Floor Bearing Plate 688 on Baidu Shangqiao. As someone familiar with the pressed steel plate industry, I thought I’d explain what it actually means.
Floor Bearing Plate 688 refers to the YX76-344-688 steel structure pressed steel plate. This model was one of the first pressed steel plates developed in China. It features an open profile with a high-peak design, which makes it particularly suitable for large-span architectural projects. The high-peak design not only enhances structural strength but also reduces the need for temporary supports during construction, thus cutting down costs significantly.
Let's break down some of its key technical specifications: The standard panel width is 1000mm, with a wave height of 76mm, a wave pitch (effective coverage width) of 344mm, and a material utilization rate of 68.8%. These plates are manufactured using either hot-dipped galvanized steel sheets or pre-painted color-coated steel coils, available in thicknesses ranging from 0.75mm to 1.5mm. Their production and quality control processes adhere strictly to the national pressed steel plate standards set out in GB/T12755-2008.
Those well-versed in the pressed steel plate sector know that YXB76-344-688 was inspired by the European and American YXB76-305-915 (commonly referred to as the 3W pressed steel plate). While both have their merits, the YXB76-305-915 tends to offer better cost efficiency and a wider effective coverage area compared to the 688 version.
In most cases, we suggest opting for the YXB76-305-915 pressed steel plate whenever feasible. For instance, back in November 2019, the Shandong Shengbo YXB76-305-915 open pressed steel plate was utilized in the Dongying Municipal Solid Waste Incineration Power Plant project undertaken by Sichuan Huashen Group.
It’s worth noting that while the 688 series remains popular due to its performance characteristics, advancements in technology and materials mean newer models like the 305-915 series often provide more value for money and improved functionality.
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