Hose Master Annuflex corrugated stainless steel hoses are manufactured with a hydroforming process. This produces hoses with minimal residual stress, uniform wall thickness throughout the corrugations, and minimal work hardening. Also, the process renders a very flexible, long lasting corrugated annular metal hose. We stock this hose in the AF4750 style (321 Stainless Steel Corrugated Metal Hose with 304 Stainless Steel Single Braid), ready to fabricate to order. Our corrugated metal hose can handle high pressure and is gas tight, making it an excellent choice for gas and liquid transfers.