SA213 T11 boiler tube, properties of hot strength makes it suitable for use in pressure-bearing plants in temperature up to 1,000°C. It has excellent fabrication characteristics necessary for high temperature boiler plant construction. In pressure vessel construction and power station engineering, excellent creep rupture strength is one of the most important properties of materials used. The operating conditions in the newly constructed power stations are critically set on by the recent developments in T11 boiler tube fabrication. In this fabrication by the use of heat resistant high-alloy steels it allows the determination of reliably improved supercritical steam characteristics.