The four corners of rectangular frame air duct are easy to cause seepage, which reduces the reasonable total current carrying area. The stainless steel plate air duct has good gas circulation, large reasonable total current carrying area, and the stainless steel plate air duct supplier. Therefore, the secondary noise of stainless steel plate air duct is low. The 304 stainless steel plate air duct has high compressive strength, so the low-frequency noise caused by the air duct vibration is smaller, the air idea is good, and the management system loss is small, The daily operation management system uses less electricity. At this stage, it is also very likely to use the flat oval air duct to achieve the indoor space height of the land air duct. The flat oval air duct is to use special machinery and equipment to pull and shape the round air duct into a flat oval shape. Because the two sides of the air duct are round, the cyclone is solid, the air duct has good stiffness, and the exposed equipment is beautiful and generous. It is a more imaginative air duct series product.

螺旋式橢圓形風管螺旋風管采用熱軋帶鋼帶條狀管料，根據風管成形機一次咬出咬口骨形，并沿螺旋式漸開線齒輪運動軌跡疊成圓形管形，另外將咬口縫卡緊，終采用尤其的機器設備將圓形風管經撐拉定形生產加工成扁卵形。客戶可根據需要的長短激光切割而成。不銹鋼板風管的生產制造高度積化，生產制造速率迅速，另外采用規模化生產制造跟規范化生產制造，促使橢圓形不銹鋼板風管的生產制造法律效力大大的發展，性強。

Spiral oval air duct The spiral air duct adopts the hot rolled steel strip pipe material. According to the air duct forming machine, the seam bone shape is bitten out at one time, and is folded into a circular pipe shape along the spiral involute gear movement path. In addition, the seam seam is clamped tightly. Finally, the circular air duct is processed into a flat oval shape by special machine equipment through stretching and shaping. The customer can cut it by laser according to the length required. The production and manufacturing of stainless steel plate air duct is highly integrated, and the production and manufacturing speed is rapid. In addition, large-scale production and standardized production and manufacturing are adopted, which promote the development of the legal effect of the production and manufacturing of oval stainless steel plate air duct.

由于不銹鋼板風管采用螺旋形壓槽，因而較為等同于規格型號的白鐵皮風管，其抗壓強度要高。

As the stainless steel plate air duct adopts spiral groove, the compression strength of the galvanized air duct which is equivalent to the specification and model is higher.

當氣體根據管路開展傳送的過程中，由于圓上設立螺旋式型咬縫，提升風管的抗壓強度，不容易造成震動，因而在著陸低頻噪音傳送上，存有的隔音不良影響，很有可能合理的著陸了壁厚傳播聲音，發展修建品行。有研究表明，一樣采用D200，薄厚為26#厚鋼板生產制造的碰角管與螺旋鋼管，由于螺旋鋼管的彎曲剛度高過碰角管，其低頻段比后面一種低3~10dB，中高頻率段低12~20 dB。在相仿風管橫截面、風管材料薄厚類同的前提條件下，在低頻段橢圓形不銹鋼板風管的隔音性好于矩形框風管10dB上下。

In the process of gas transmission according to the pipeline, since the spiral undercut is set on the circle to improve the compression strength of the air duct, it is not easy to cause vibration. Therefore, there is a good sound insulation effect on the transmission of low-frequency landing noise, which is likely to reasonably land the wall thickness to transmit sound and develop the construction practice. Research shows that the angle impact pipe and spiral steel pipe manufactured with D200 and 26 # thick steel plate are the same. Because the bending stiffness of spiral steel pipe is higher than that of angle impact pipe, its low frequency band is 3~10dB lower than that of the latter, and its medium and high frequency band is 12~20dB lower. On the premise of similar cross section of air duct and similar thickness of air duct materials, the sound insulation of oval stainless steel plate air duct at low frequency is 10 dB higher than that of rectangular frame air duct.