RH Degasser RH degasser is a secondary refining system that removes dissolved gases such as hydrogen present in molten steel to enable the production of high-grade steel. Processes that remove the dissolved gases present in molten steel are necessary for the production of high-grade steel. RH degassers (RH) are suitable for quickly degassing from large quantities of molten steel. They feature a vacuum chamber equipped with two snorkels that is mounted to the ladle. Argon gas is blown from the si