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How to Measure Perforated Sheet
A 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.
Spiral Welded Pipe vs Longitudinal
As 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.
304 Stainless Steel versus 409 Stainless Steel
304 is an austenitic stainless steel high in chromium and nickel with very high corrosion resistance. It is one of the most commonly produced and used stainless steel grades. 409 is a ferritic stainless steel with less chromium and very little nickel. It less expensive to produce than 304, but also provides less corrosion resistance.
Advantages of Spiral Welded Pipes
Steel pipes of the same width can be utilized to make steel pipes of different diameters, especially when using narrow strip steel to make big-diameter steel pipes.
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