BES sell stainless steel tube in both imperial and metric sizes. Stainless steel seamless tube to ASTM A269 - 316L. Tested and marked to ASTM A450. Suitable for high pressures, vacuums, impulsing and pressure surge applications. May be hydraulically bent in machine. Not suitable for potable water until the inside of the tube has been cleaned. Please note that some of these tubes are suitable for use with compression fittings. For threading applications Schedule 40 (SCH 40) tube is used. BES also stock flexible corrugated steel.