safety belts (seat belts); unplasticized polyvinyl chloride or UPVC rigid electrical conduit; and black iron or galvanized iron (BI/GI steel) pipes were also seized. TFK also confiscated ...

The next step is to press a magnet to the pipe. If the magnet sticks, the pipe is likely made of galvanized steel. Residents can scratch the pipe with a screwdriver to discover the type of piping ...