Used iron from old pipes, thick metal plates, mining equipment, scrap iron ships and industrial waste pile up in the iron foundry on the north coast of Java. Sorted by quality, the iron is then cut into uniform sizes and melted down. This hot melted iron gets poured into molds. The next step is a long two-day tempering process to make the pipes strong.
After sandblasting each pipefitting to create surface texture, the pieces are placed onto racks. These are then hot dip-plated to galvanize the iron. A final oil and water bath cools and hardens the pipes. Along the way, a quality controller passes the pipe through to the next step, or it’s melted down to begin the process again.
