How to Measure Perforated SheetA perforated sheet is a metal sheet that’s punched or cut to produce a pattern of holes, slots or shapes for practical or aesthetic purposes. It’s also known as “perforated metal.”
This type of metal sheet includes decorative hole patterns such as circles, squares, triangles, diamonds, hex, slots, bars and so forth. By combining shapes, it is possible to create more complex designs.
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Spiral Welded Pipe vs LongitudinalAs the name suggests, the manufacturing processes of spiral welded pipe and longitudinal welded pipe are distinctly different. While Spiral-weld pipes are rolled and welded according to a preferred helical angle, the longitudinal welded pipes are created by bending and forming metal, and finally welded together down the length of the pipe to create a straight, longitudinal seam.