JULONG STEEL is committed to advancing lightweighting technologies for commercial vehicles, reducing energy consumption and manufacturing costs, while creating greater value for steel mills, commercial vehicle manufacturers, and logistics companies. 居龙钢铁致力于商用车轻量化技术的发展，降低能源消耗、降低制造业成本，同时为钢铁企业、商用车生产商及物流企业创造更多价值。

With increasingly stringent national energy conservation and environmental protection requirements, as well as the urgent need for national energy development strategies, vehicle lightweighting is increasingly becoming a key approach to alleviating energy pressures and promoting green development, and lightweighting in commercial vehicles holds even greater significance. Although commercial vehicles currently account for only 20–25% of the total vehicle fleet, they consume more than half of the total fuel used by all vehicles. Furthermore, compared to their counterparts abroad, Chinese commercial vehicles generally have higher curb weights, resulting in high fuel consumption, high CO₂ emissions, low load factors, and high logistics costs for operating companies. Data analysis indicates that a 10% reduction in the curb weight of commercial vehicles can lower fuel consumption by 4.8% when empty, and when fully loaded, the same fuel consumption can transport an additional 10% of cargo weight. Therefore, the lightweighting of China’s commercial vehicles is of great significance for reducing energy consumption, lowering logistics costs in the manufacturing sector, and promoting green, high-quality development.

随着国家节能环保要求的日益提高以及国家能源发展战略的迫切需要，汽车轻量化越来越成为缓解能源压力、推动绿色发展的重要途径，而商用车的轻量化则具有更加重要的意义。尽管目前商用车保有量仅占汽车总保有量的 20-25%，但其油耗却占到了汽车总油耗的一半以上，而且与国外相比，中国商用车自重普遍较高，造成了油耗高、CO2排放大、负载率低、用车企业物流成本高。数据分析表明，如果商用车整备质量减少 10%，则空载油耗可降低 4.8%，满载相同油耗下可多运输 10%整备质量的货物。因此，中国商用车的轻量化对于降低能源消耗、降低制造业物流成本、推进绿色高质量发展具有重要意义。

Since August 2016, following the promulgation and implementation of the mandatory national standard “Limits on External Dimensions, Axle Loads, and Mass of Motor Vehicles, Trailers, and Motor Vehicle Trains” (GB 1589), commercial vehicle manufacturers and logistics companies have expressed an increasingly urgent need for vehicle lightweighting. Major steel companies and commercial vehicle manufacturers are all conducting research on lightweighting technologies to identify effective solutions. Against this backdrop, convening a seminar on commercial vehicle lightweighting technology to jointly discuss economical and feasible solutions will effectively promote the development of commercial vehicle lightweighting technology, while creating greater value for steel companies, commercial vehicle manufacturers, and logistics enterprises.

2016 年 8 月以来，随着强制性国家标准《汽车、挂车及汽车列车外廓尺寸、轴荷及质量限值》（GB1589）的发布实施，商用车制造商及物流企业对商用车轻量化提出了更加迫切的需求，各大钢铁企业和商用车制造商均在开展相关的轻量化技术研究，以寻求有效的轻量化解决方案。在这个背景下召开商用车轻量化技术研讨会，共同商讨商用车轻量化经济、可行的解决方案，将有效促进商用车轻量化技术的发展，同时为钢铁企业、商用车生产商及物流企业创造更多价值。

Whether trailer-mounted or self-propelled, the manufacturing processes for U-shaped dump trucks are consistent worldwide. As China’s specialized vehicle manufacturing industry has undergone transformation and upgrading, these truck bodies have transitioned from standard steel to NM450 wear-resistant steel plates, significantly increasing the vehicle’s overall load-carrying capacity. This allows for a greater payload on each trip and reduces fuel consumption during empty runs. The removal of side reinforcements has also reduced aerodynamic drag, further lowering fuel consumption.

不论挂车式，还是单车式的，世界各国U型自卸车的制造工艺都是一样的，随着我国专用车制造水平的转型升级，这些车箱从标准钢升级到NM450的耐磨钢板，使整套车辆的载重能力大大增加。每次行程有更多的有效载荷，并且还减少了空车的燃料消耗。侧面加强筋的移除也降低了风阻，进一步降低了燃油消耗。

As the manufacturing standards for dump semi-trailers continue to improve, manufacturers are placing higher demands on body fabrication. To produce more standardized U-shaped dump trucks, the one-step forming of body steel plates will be a key focus in the future. As a cold-forming specialist, we operate a 12-meter, 4,000-ton CNC press brake developed in-house. Equipped with a Dutch Delem CNC system to ensure processing precision, we provide professional solutions for sheet metal fabrication and undertake cold-forming projects for various custom-shaped steel plates. Our primary focus is on cold-forming body panels for engineering dump trucks to meet requirements for overall body strength and lightweight design.

JULONG STEEL is a manufacturing services expert dedicated to supporting the transformation and upgrading of domestic manufacturing standards, facilitating resource sharing along the extended supply chain for manufacturing materials and processing.

随着自卸半挂车的制造水平不断升级，各生产厂家对箱体加工也提出了更高要求，如何能生产出更标准的U型自卸车，箱体钢板一次性成型加工是今后重点。做为钢板冷弯加工企业，我们山东总华拥有自主研制的12米4000吨大型数控折弯机，采用荷兰delem数控系统保证加工精度，为金属板材加工提供更加专业的解决方案，承接各种异型钢板的冷弯加工。主要用于各类工程自卸车箱板冷弯加工，以满足整体车箱强度和轻量化设计。

居龙钢铁是制造业服务专家，服务于国内制造水平的转型升级，在制造业用材与加工延伸的供应链路上资源共享。

我们在这里恭候您的光临，愿与广大致力于中国制造业转型升级的同路人一同前行。