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　　薄鋼板法蘭風管 ：

　　Thin steel plate flange air duct:

　　薄鋼板法蘭應采用機械加工，且平直，機械應力造成的彎曲度不應大于5‰。

　　Thin steel plate flanges should be machined and straight, and the bending caused by mechanical stress should not exceed 5 ‰.

　　薄鋼板法蘭與風管連接時，宜采用沖壓連接或鉚接，鉚接點間距宜為120mm~150mm。

　　When connecting the thin steel plate flange to the air duct, it is advisable to use stamping connection or riveting, and the distance between the riveting points should be 120mm~150mm.

　　薄鋼板法蘭彈簧夾的材質應與風管板材相同，形狀和規格應與薄鋼板法蘭相匹配，厚度不應小于1mm，且不應低于風管本體厚度，長度宜為130mm~150mm。

　　The material of the thin steel plate flange spring clip should be the same as the air duct plate, and the shape and specifications should match the thin steel plate flange. The thickness should not be less than 1mm and should not be less than the thickness of the air duct body. The length should be 130mm~150mm.

　　角件與風管薄鋼板法蘭四角接口的固定應穩固緊貼，端面應平整，相連處的連續通縫不應大于2mm，角件的厚度不應小于1mm及風管本體厚度。

　　The fixing of the corner piece and the four corner interface of the thin steel plate flange of the air duct should be stable and closely adhered, the end face should be flat, and the continuous through seam at the connection should not exceed 2mm. The thickness of the corner piece should not be less than 1mm and the thickness of the air duct body.

　　法蘭接口位置密封材料 ：

　　Sealing material for flange interface position:

　　通風管道法蘭接口位置應采用厚度為 22×4 、 25×4 、 24×5 、 25×5 的閉孔橡塑膠條和環保型聚氨酯機械密封。

　　The flange interface of the ventilation duct should be sealed with closed cell rubber strips and environmentally friendly polyurethane mechanical seals with thicknesses of 22 × 4, 25 × 4, 24 × 5, and 25 × 5.

　　建議根據具體的應用場景選擇合適的法蘭接口厚度和密封材料，以確保通風管道的連接強度和密封性能。

　　It is recommended to choose the appropriate flange interface thickness and sealing material according to the specific application scenario to ensure the connection strength and sealing performance of the ventilation duct.

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