The pipe is prepared from galvanized steel https://uatodaynews.com.ua/ocinkovannaya-truba/ using the hot-dip galvanizing method. After the welding process, the welding seam is additionally coated with a ball of zinc. Thus, the internal and external surfaces of the pipes are galvanized. The internal welded seam avoids sharp edges, allowing cables to be drawn without the risk of damaging the cable's dry coating. Thin steel pipes are easy to bend in a cold mill without heating, using manual or electric pipe benders.
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