Based on the technology of hot-rolled carbon steel wire rods,according to the theery and regression,the chemical composition has been designed again,and the pledging measures have been worked out.

On the assurance steps of the quality of road project;

Analysis on the operation stability of generating units in Hongjiadu Hydropower Station and the guarantee measures;

Concrete construction process and construction management are elaborated as well as the assurance measures of engineering quality.

In this paper the compilation method and main content of project construction quality plan are introduced and from responsibilities of project manager, material control, purchasing and other aspects the quality assurance measures are elaborated.

The common quality problems and assurance measures of large terrazzo floor;

On the assurance measures of the cast-in-situ concrete quality;

Combined with construction practice of Huatupo Bridge the quality and safety guaranteed measures are elaborated from intensifying construction management and quality control in order to make the quality index to reach national advanced level and realize the scheduled safety and quality objects.