PT. Gunung Raja Paksi Tbk

GSG Steel Making
Through a long and thorough process to get the best quality iron
As a leading steel producer, GRP has complete and integrated production facilities to produce quality steels capable of meeting various types of steel.
With an integrated system, GRP is able to process steel from its raw form into finished product form and is ready for use in various construction and construction projects. All of these processes are carried out within a single complex area and performed daily through a series of steps as follows:
- Collection of scrap metal or scrap metal and iron ore into the initial process. The quality of scrap metal became a major assessment when they arrived at our factory. The assessed old iron will be grouped and ready for the melting process.
- The next step is the melting process, at this stage the scrap metal and iron ore is melted by using Electric Arc Furnace (EAF), which will fill the old iron with electricity and turn it into molten metal. At the same stage, to ensure that quality meets standards, raw elements such as sulfur, phosphorus and carbon elements are removed, while alloying elements are added to obtain the correct chemical composition according to the standard.


- Once the exact chemical composition is obtained, the molten steel is then fed through the continuous casting machine into Slabs.
- In the final process, the semi-finished product will be sent to the finishing mill where it will be reheated until about ± 1400ËšC and then in shape to the desired dimensions until the finished product process.
- All finished products are then inspected by our qualified Quality Control officers in ensuring all GRP steels are produced in accordance with international standards to fulfill orders. Any material that has passed the process of quality control will be stored in our warehouse, ready to be distributed and used in every building and construction project.
Additional services that the GRP can provide:
- Galvanizing
- Normalizing Furnace
- Shot Blasting
- Primer coating and other coating applications
- Components fabrication (stamping, drilling, stamping, punching, shearing, cut-to-length, cut-to-shapes, welding)