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Contact SupplierWe offer high-quality ASTM A815 Duplex Steel Flanges made from Duplex Steel Grade UNS S31803, ideal for offshore applications. Our flanges come with Mill Test Certificate/NACE MR 01-75 certification, ensuring top-notch quality. Available in sizes ranging from 1 Inch NB to 24 Inch NB and class ratings from 150# to 2500#. These flanges are finished with precision through forging or machining. As a leading Manufacturer and Supplier, we provide reliable and durable Duplex Steel Flanges for various industrial needs.