Based on the shell theory,a set of theoretical formulas for stress analysis of the exposed penstocks with known end displacements is presented.

For the purpose of finding out the reliability level of penstock,the reliability of penstock in "Design Code for Penstock in hydropower stations(SD 144-85)"was calibrated and analyzed.

Photoelectronic length measuring system for steel pipe and error analysis;

Actuality and development trend of FEM simulations of drawing processes of steel pipe;

Effect of the process parameters on energy and deformation of the steel tubes during explosive compaction;

Design and implement method of high speed copper plating on steel tube;

Parameters determination of steel tube upsetting technology;

Analysis for toughness of 2205 duplex stainless steel pipe welds;

Forming Process Design of Pipe Drawing Based on Multi-objective Optimization;

The technical features and application of the new type inner & outer pipe surface grinding machine;

Characteristics of Ten-Roll Tube Straightener;

Ultimate strength of short steel tube-confided concrete;

To verificate the correctness and reliability of the simulation system, a typical processing of 3 rollers stretch reducing of tube is simulated by simulation system of 3D Thermo-mechanical Couple rigid-plastic FEM.