Resolution of the ribbed bar stacking in reducing sizing mill zone of high-speed wire rod rolling line;

Development of the ribbed bar according to ASTMA615M-96a;

This paper introduces the creating of high benefits from hot-rolled ribbed bar with less competition,relying on management and scientific and technical progress.

A Study on Strengthening Mechanism of Vanadium Microalloyed Hot Rolled Rebar;

The longitudinal extension distributed in the rebar has been studied.

Introduction of production reinforced bar by high-speed wire mill;

With statistic method the quality feature values of chemical composition and mechanical properties of HRB400 reinforced bar are analyzed,its fatigue,welding,mechanical linking and sticking properties are checking analyzed.

The reason of occurrence of calabash like head on large size hot rolled reinforced bar and the method to resolve it are discussed.

Factors of influencing the pressed sleeve splicingquality of ribbed steel bars;

The main reason of the welding brittle fracture for 20MnSi ribbed steel bars is owing to high carbon equivalent and unusual metallurgical structure,the method of the control the carbon equivalent and finishing temperature is put forward through the simulation tests,examination and statistical analysis according to the brittle fracture phenomenon of the welded 20MnSi reinforced bar.

Discuss rolling with minus tolerance for ribbed steel bar;

Insight about weigh tolerace in ribbed steel bar is introduced, different ineasurements about it are analysised, implementation of standard GB 1499-1998 is researched, connection of weigh tolerace with size to lerace or quality test is discussed, on the basis of this we planed 3 tables for yield test, summarized experience of subzero tolerace roll.

The application of non weld connecting technique for ribbed steel bars with Model GS A 32 connector in construction of Longtouqiao reservoir was introduced.