The company’s main business is prefabricated highway steel bridges. Due to the introduction of products from the UK in the late 1960s and the reform of the metric system, this industry was named as the 321 type prefabricated highway steel bridge. Moreover, as a field pontoon bridge unit, the bridge is quickly manually erected, with a maximum load capacity of 30 tons per single vehicle. The crossbeam is made of 27 # (or 28 #) I-beam, and each crossbeam has a maximum bearing capacity of 12.5 tons. As the load standard for heavy-duty vehicles (5 tons) at that time, it was fully capable of meeting the requirements. With the continuous improvement of China’s modernization level, the load standard of heavy trucks has been continuously improved. The load level of the current double rear axle Dump truck has reached 40 tons, and it reaches 60 tons after adding the dead weight. Therefore, the standard structure of the old 321 through bridge is far from meeting the traffic requirements. To this end, the company has developed a deck bridge and standardized all components to meet interchangeability requirements. The deck slab has been applied for a patent and has been accepted. In the company’s business, deck bridges account for almost 80% or more of the market share, effectively solving the problem of insufficient load capacity of old standard bridges, making contributions to modern construction and receiving unanimous praise from users!
In order to solve the problem of insufficient load capacity, relevant units have introduced large Bailey steel bridges, BZ200 type Perhaps due to a lack of time, the basic connection size of the HD200 steel bridge’s Bailey plate, which is 2134mm * 3048mm in English, has brought great inconvenience to production and use, and is also the reason why it has not been vigorously promoted. In order to solve the problem of large-span bridges, it can also have universality with the components of the 321 type upper deck bridge, and to solve the problem of smaller beam size of the lower deck bridge The company has developed BL type Bailey plates, completely solving the problems existing in prefabricated steel bridges. The product is currently applying for a patent and has been accepted.
Post time: Jun-20-2023