Berei tablet has the characteristics of simple structure, convenient transportation, quick erection, large load, good interchangeability and strong adaptability.
"321" steel bridge is on the basis of the former imperial bailey truss bridge, in combination with the practical situation of China's national conditions and development of the rapid assembly Bridges, finalize the design production in 1965, and got great development in our country, widely used in national defense, combat readiness, traffic engineering, municipal water conservancy project, is the most widely applied in our country, the best packaged Bridges. It has the characteristics of simple structure, convenient transportation, quick erection, large load capacity, good interchangeability and strong adaptability. "HD200" prefabricated highway steel bridge increases the truss height, improves the bearing capacity, enhances the stability, increases the fatigue life, and improves the reliability. Compared with the 321 type steel bridge, the strength is increased by 33% and the stiffness is increased by 2.3 times under the same combination condition. Scope of application Single lane bridge deck width 4.2m, combined span 9.14-76.2m, double lane bridge deck width 7.4m, combined span 9.14-57.91m