Corrugated stainless steel piping systems for indoor gas installations

The approval requirements relate to plastic-coated flexible and pliable corrugated stainless steel pipes and matching tensile resistant fittings for indoor gas installations. The nominal internal diameter of the corrugated pipes is 10 through 65 mm. The maximum admissible operating pressure is 100 mbar. The system is intended for indoor use at operating temperatures ranging from -20 °C to 60 °C.