螺旋风管的接缝是周向的，接缝的强度比径向的直缝强度要高许多，所以能确保在1.5倍工作压力下接缝处无裂开，因为其原资料镀锌带钢与整张镀锌钢板比较，报价较低，加上其工厂化出产和标准的标准化，使得造价要比矩形风管低。山东通风管道加工
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.
别的因为其支、吊架需量少，安装工作量少，所以总成本较低。因为矩形风管的四角易发生湍流，减少了有效通流面积，空气流动性好，有效通流面积大，所以商品的二次噪声小，因为其强度大。
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.
螺旋风管的整个行业要发展，他依靠并不是他的，应该是这个行业的整体素质。
Spiral duct of the whole industry to develop, he is not relying on his price, should be the overall quality of the industry.
到的目标，各企业均围绕的主题开展相关活动， 在新产品开发、产品设计、制造工艺、生产线技术改造等方面加大投入力度，促进设备的升级。
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.
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