Duct Flange Clamp is used to clamp Doby frames together on larger ducts when the corner bolts alone are not sufficient. Typically applicable to rectangular ducts of approx. 500mm and above - clamps should be spaced every 300mm to 500mm depending on duct pressure. A larger spacing may be used with larger profile frames. It used for air duct combination with flange corner,flange cleats and clamps. SAIF is a professional hardware accessories overall solution supplier, committed to providing all customers need convenient, efficient, low-cost hardware solutions. The overall solution not only provides product production, sales, but also provides related technical services, maintenance, use training and other services.We have advanced design team and stable production capacity, with good performance and service capacity. Our company has been certified as a “Gold Supplier“ by Alibaba, which is meaning our online and offline strength has been certified by an internationally authoritative third party. Meanwhile we got the ISO9001 quality management system certification, so our company has a rigorous enterprise quality management and quality assurance. Better control from raw materials, production, processing, packaging, storage, until to shipment. To provide customers with stable quality of quality products and services. WHY CHOOSE US Always keep our promise, always be responsible for our products 1、OEM SERVICE Our factory professional design team tomeet customer's various materials of customized production needs. 2、ASSURANCE Our factory has been Alibaba Verified Supplier and passed the ISO9001 quality management system certification. 3、MOST FAVORABLE PRICE High quality with lower price. 4、AFTER SALES Always keep our promises, always be responsible for our products. 5、LARGE PRODUCTIVITY Our factory covers an area of 8000 square meters.We have enough staffs in the production line to meetthe need within customize of stamping.