插接式法兰制作风管是国际上较先进的制作工艺,它使矩形法 兰制作实现标准化、批量化、机械化,比传统的角铁法兰制作省 料,简易具有省时、省料、工作效率高、密封性好、坚固耐用和 驳接坚固等优点,特别适用于通 风管道截面面积较大的矩形风管。 It is the advanced technique in the world to make wind pipe with pin-board type flange. It is capable of making standard and mechanical rectangle flange in batches, compared with traditionally angle iron flange making, it features saving time, saving materials, high effect, fine sealing performance, durable and solid connection. Therefore, it is suitable for making rectangle wind pipe with big section
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