The control of welding quality plays an important practical role in construction of pharmaceutical cleaning piping.

A brief description of the portable water design in hotels was introduced in the paper.

Direct-burying of steam pipeline;

In the light of the fact that elastic creep damage happens to heat resistant steel used as pressure elements like steam pipeline and steam pockets in heat-engine plants at high temperature and under high pressure,this article gives a complete constitutive description of the damage,building up the theory of phenomenology about creep damage.

A simple and easy density method for graphitization diagnosis of carbon steelsteam pipeline is developed.

Assessment of Capacity of Bearing Pressure of Steam Injection Pipeline and Verif ication of Full-scale Test;