Bending of U-ribs for a 12-meter bridge 12米桥梁U肋折弯加工

JULONG STEEL has recently secured another order for the construction of U-ribs for a large bridge over 12 meters long on a major highway. The company has met all technical requirements for every stage of the process, from cutting to edge milling and bending. JULONG STEEL operates its own in-house U-rib bending production line, ensuring high-quality processing services.

近日居龙钢铁再次斩获某高速12米以上大型桥梁U肋建设订单，从下料-铣边-折弯均达到各项技术要求，居龙钢铁拥有自主设计的U肋折弯加工生产线，可保质保量提供加工服务。

我们拥有自主研制12米全数控4000吨折弯机，采用荷兰DELEM公司折弯机专用数控系统，德国光栅尺实时检测反馈校正、全闭环控制，具有多工步编程功能，可实现多自动运行，完成多工步零件一次性加工，提高生产效率。

U-channel product processing specifications: Thickness ranges from 3 mm to 20 mm, base width from 100 mm to 360 mm, and height from 150 mm to 500 mm. Bending lengths can exceed 12 meters. These products are primarily used in the production of steel structures for bridge decks.

U肋产品加工范围：厚度为3mm-20mm，底宽100mm至360mm，高度150mm至500mm。折弯长度可达12m以上，主要用于桥梁板钢结构生产。

U-shaped ribs are primarily used in bridge deck fabrication. Currently, there are two main processing methods in China: roll forming and bending.

Comparison of the two methods:

The advantage of roll forming is its fast output speed and high production efficiency. The disadvantages are poor straightness retention and low yield rates. It can only guarantee the fabrication of U-ribs up to 6 meters in length; maintaining straightness for lengths exceeding 9 meters is difficult.

The advantage of bending is good straightness retention and high yield rates. It can process large bridge U-ribs exceeding 12 meters in length, making it suitable for current domestic ultra-large bridge construction projects. For example, the recently completed Hong Kong-Zhuhai-Macao Bridge utilized large bridge U-ribs weighing 54,000 tons and exceeding 12 meters in length.

U型肋主要用于桥梁板加工，目前国内基本有两种加工工艺，一是辊压成型，二是折弯成型。

二者工艺对比：

辊压优势出料速度快，生产效率高。缺点是直线度保持性差，成品率低。只能保证加工6米内的U肋，对9米以上的直线度很难把握。

折弯成型优势是直线度保持好，成品率高，可以加工12米以上的大型桥梁U肋，适合目前国内特大型桥梁工程建设，比如刚落成的珠港澳大桥，就采用了5.4万吨12米以上的大型桥梁U肋。

山东总华整合自身优势资源，充分利用国内加工产业链，积极组织生产，保证按期交付。

我们应用先进工艺，一次性加工合格率达100%，加工厚度达20mm，可以为客户提供原材料铣切折弯加工，费用低，效率高。