T91 steel pipe was proceeded on TLP bonding and arc welding with metal inert-gas arc welding by contrast test.

Research on T91 steel refining technology through EAF-LF-VD process route;

Transient liquid phase bonding of T91 steel using two-step heating process;

Effect of process parameters on the microstructures and properties of T91 steel TLP joint;

Discussion about the method of life assessment for steel T91;

Study on Hot-piercing Performance of Steel T91 for High Pressure Boiler Service;

In this paper, the microstructure features in the welded metal and heat affected zone of heat-resistant steel T91, which was welded by different processes, are analyzed through metallography and SEM techniques.

The influence of technological parameter such as preheat temperature, heat treatment temperature, weld heat input and welding consumable on the weld of T91/P91 steel was synthetically analysed by means of SMAW during the course of welding process.

The study and development of T91/P91 steel and the main performance index were introduced in this paper.

With the SCRI model,reliability-based creep-rupture life prediction of T91/P91 steels was performed,whereas the reliability of creeprupture life prediction evaluated in consideration of the dispersivity of functional data and fluctuation of service conditions.

SA213-T91 steel with inferior welding performance is used on end superheater of domestic-made 600MW subcritical boil- er.

In power industry, SA213-T91 steel are widely used in superheater and reheater of utility boiler.