Compared with traditional angle steel flange connection technology, thin steel flange manufacturing and installation technology has the advantages of advanced technology, stable product quality, good forming quality, reducing environmental pollution, reducing labor intensity and accelerating construction progress. So what's the difference between thin steel flange tube and corner flange tube?

　　1. 较低的物质损失

　　1. Lower material losses

　　由于金属矩形风管薄钢法兰风管一般采用计算机放样、激光切割、水生产。与传统的手工放样切割相比，具有加工精度高、切削损耗小的优点。

　　Because the metal rectangular air duct thin steel flange air duct generally uses computer lofting, laser cutting, water production. Compared with traditional manual lofting cutting, it has the advantages of high processing accuracy and low cutting loss.

　　2、保存角法兰

　　2. Preserving corner flange

　　在传统角钢法兰风管,风管如600毫米* 300毫米,通常使用∟30角3.6米* 1.37公斤* 4 = $ 20元,管占地面积1.8,节省约11元每。

　　In the traditional angle steel flanged duct, such as 600 mm * 300 mm, the duct is usually used 30 angle 3.6 m * 1.37 kg * 4 = 20 yuan, covering an area of 1.8 square meters, saving about 11 yuan per square meter.

　　由于法兰是由镀锌钢板制成，镀锌钢板的数量增加了约4%，其次是采用自动生产线，生产精度和质量更容易控制。

　　Because flanges are made of galvanized steel sheets, the number of galvanized steel sheets has increased by about 4%, followed by the use of automatic production lines, the production accuracy and quality are easier to control.

　　此外，由于型钢和防腐工程的减少，也减少了油漆对环境的污染，具有较好的经济效益和社会效益。

　　In addition, due to the reduction of section steel and anti-corrosion engineering, it also reduces the pollution of paint to the environment, and has better economic and social benefits.

　　3.手续费

　　3. Fees

　　生产金属矩形风管和薄钢板法兰风管，工厂定制的加工成本为每14元，而常规角钢法兰风管的加工成本为每22元左右。

　　Production of metal rectangular air duct and thin steel plate flange air duct, factory customized processing cost of 14 yuan per square metre, while the processing cost of conventional angle steel flange air duct is about 22 yuan per square metre.

　　每节省劳动力8元左右。

　　Every square metre saves about 8 yuan of labor.

　　4. 节省工程机械成本

　　4. Save the cost of construction machinery

　　由于工厂集中定制，薄钢法兰风管降低了加工机械的成本，节约了工程机械的成本。

　　Because of the centralized customization of the factory, thin steel flange air duct reduces the cost of processing machinery and saves the cost of construction machinery.

　　因此，从施工效率、工程质量和工程经济效益三个方面可以看出，薄钢法兰风管比角钢法兰风管具有巨大的，我们可以根据山东风管生产建设的实际情况进行选择。

　　Therefore, from the three aspects of construction efficiency, engineering quality and engineering economic benefits, it can be seen that thin steel flange air duct has great advantages over angle steel flange air duct. We can choose according to the actual situation of Shandong air duct production and construction.