The Mapress Stainless Steel gas system is appropriate for use with natural gases, petroleum gases and liquified gases. The fittings are installed with the Mapress Stainless Steel pipes and carry Advantica approval. Mapress Stainless Steel has exceptional high temperature resistance and is fire resistant and is highly stable. It is hygienic, with a high corrosion resistance. Diameters from 15mm to 108mm.