DEHAS gas supply tubing QualityCONNECT low-pressure tubing system for medical gases Color coding gas type-specific in accordance with DIN EN ISO 5359, tubing with combination of DIN elbow connector, device screw connection – device connection NIST or other gas type-specific screw connection. Of course, we also offer connections according to international standards, e. g. DIN, BS, NF, UNI, SS, SIS, JIS, Carba, Carburos.