共板式法兰风管又称无法兰风管，其制作形式比传统的矩形风管加工速度更快捷、更方便、更小的漏风率。其优点是节省材料，减少工程投资；漏风量小，降低能耗，节省运行费用，颇受厂房装修施工企业欢迎。标准直管由流水线上直接压制成连体法兰。非标直管、弯头、三通、四通、配件等下料后，在单机设备上完成TDF法兰成型。法兰角由模具直接冲压成型，安装时卡在四个角即可。法兰间的连接用法兰卡，由镀锌钢板制作，经法兰卡成型机成型后切割成统一的尺寸供安装连接使用。TDF共板法兰因与管道钢板连成一体，不必像角钢法兰般打孔铆接，在两节管道的连接上用专用法兰卡，四角加90度法兰角后用螺栓连接。
Common plate flanged duct, also known as non-blue duct, is faster, more convenient and less leakage rate than the traditional rectangular duct. Its advantages are saving materials, reducing project investment, small air leakage, reducing energy consumption, saving operating costs, which is very slzuranji.37ix.com.cn tuoliuta.37ix.com.cnchuchenqi.37ix.com.cn jiaqiao.37ix.com.cnchuguanblg.37ix.com.cnzengrenji.37ix.com.cnpopular with factory decoration and construction enterprises. Standard straight pipe is directly pressed into connecting flange by pipeline. TDF flange forming is completed on single machine after cutting non-standard straight pipe, elbow, tee, four-way, fittings, etc. The flange angle is directly stamped by the die, and can be clamped in four corners during installation. The connection between flanges is made of galvanized steel sheet, which is cut into a uniform size after forming by the flange forming machine for installation and connection. Because TDF common plate flange is connected with pipeline steel plate, it does not need to rivet and punch like angle steel flange. Special flange cards are used for connecting two pipelines, and bolts are used for connecting four corners with 90 degree flange angle.