Special 90° Elbow for Fresh Air Duct System

Special 90° Elbow for Fresh Air Duct System. Customized Design: Products can be customized according to customer requests with professional recommendations. Double-Wall Structure: Increases compressive capacity and prevents pipeline rupture during construction. Energy Saving: Hollow layer between walls effectively prevents heat and energy loss. Free Sample Available: Free samples are provided upon request for customer evaluation. High Quality Materials: Made from imported new materials without any recycled content. 100% Inspection: Finished products undergo visual and functional inspection before delivery. OEM & ODM Service: Professional manufacturer offering OEM and ODM customization services. Multiple Sizes: Available in DN75, DN90, DN110, DN160, DN200 and various inch sizes.