[Jie Weinuo Industrial Star recommendation spiral duct] spiral duct material used with galvanized iron (commonly called Star iron) spiral duct supply, stainless steel spiral duct processing, soft aluminum. Material thickness: 0.3 to 1.2 mm Material width: 125 mm [Jie Weinuo Industrial Star recommendation - spiral duct] Jie Weinuo production of spiral duct seams, seam thickness is four times the spiral duct body tube, rigid pipe very large, showing the superiority of rugged, able to withstand the maximum pressure load without compromising deformation. Thin-walled spiral duct | Hebei spiral duct election 捷维诺 Industrial | Bazhou spiral duct provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in Jie Weinuo staff warmly welcome all inquiries negotiations to create a better future Jie Weinuo Industries.