The WARDFLEX® corrugated stainless steel tubing (CSST) system revolutionized the gas plumbing industry with a time- and cost-saving solution to the inherent problems of rigid steel pipe in delivery installations. With unrivaled flexibility, WARDFLEX eliminates multiple service points at turns and connections and ensures reliable flow from gas meters to appliances, giving professional contractors a smart alternative to black-steel pipe and other CSST products.