The spiral wind pipe joint is circumferential seams, the strength is much higher than that of straight radial intensity, so can ensure that the joints at 1.5 times the working pressure without cracking, because the raw materials and the whole piece of galvanized steel galvanized steel sheet, a lower price, plus its factory production standard and standardization the cost is lower than the pipe, rectangular wind.

別的因為其支、吊架需量少，安裝工作量少，所以總成本較低。因為矩形風管的四角易發(fā)生湍流，減少了有效通流面積，空氣流動性好，有效通流面積大，所以商品的二次噪聲小，因為其強度大。

In addition, because of its small amount of support and hanger, less installation work, so the total cost is low. Because the four corners of the rectangular duct are prone to turbulence, the effective flow area is reduced, the air flow is good, and the effective flow area is large, so the noise of the commodity is small, because the intensity is large.

螺旋風管的整個行業(yè)要發(fā)展，他依靠并不是他的，應該是這個行業(yè)的整體素質。

Spiral duct of the whole industry to develop, he is not relying on his price, should be the overall quality of the industry.

到的目標，各企業(yè)均圍繞的主題開展相關活動， 在新產品開發(fā)、產品設計、制造工藝、生產線技術改造等方面加大投入力度，促進設備的升級。

To the goal of energy saving, energy saving and environmental protection enterprises all around the theme of the activities, to increase investment in new product development, product design, manufacturing technology, production line technological transformation, promote the upgrading of equipment.