NAVSEA Copper Nickel Flanges Manufacturer and Exporter – IAW ANSI B16 & NAVSEA Drawings

Cunimet Alloys Pvt. Ltd. is a leading manufacturer and exporter of Copper Nickel (CuNi) Flanges in 90/10 (UNS C70600) and 70/30 (UNS C71500) grades for marine, naval, shipbuilding, offshore, and seawater piping systems. Our Copper Nickel Flanges are manufactured in accordance with ANSI B16 and applicable NAVSEA drawings, providing precise dimensional accuracy, reliable sealing performance, and complete interchangeability for critical marine applications. We manufacture a complete range of Class 150 Navy Flanges, Class 250 Navy Flanges, Class 150 Commercial Flanges, Class 200 Butterfly Flanges, Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Socket Weld Flanges, Silver Braze Flanges, and other custom-engineered flange designs.

Our Copper Nickel Flanges are manufactured to NAVSEA DWG 810-4715319, NAVSEA DWG 803-6983512, and NAVSEA DWG 810-1385892, with flange drilling in accordance with MIL-F-20042 or ANSI B16.5, depending on the flange type and application. We manufacture flanges to the applicable Figure Numbers, including Fig. 2A, Fig. 5C, Fig. 2C, Fig. 11-D, 13-D, 14-D, 16-D, 19-D, 21-D, 22-D, 24-D, 26-D, 31-D, 35-E, 36-E, 38-E, and 39-E, ensuring full compliance with NAVSEA dimensional and drilling requirements.

Our engineering team can manufacture Copper Nickel Flanges to customer-specified NAVSEA drawing numbers, figure numbers, pressure classes, flange drilling patterns, raised face (RF), flat face (FF), socket weld (SW), slip-on (SO), blind (BL), weld neck (WN), and silver braze (SB) configurations. Complete material traceability, inspection documentation, and dimensional verification are supplied with every order, making Cunimet Alloys Pvt. Ltd. the preferred manufacturer of Copper Nickel Flanges for naval, marine, offshore, and defence projects worldwide.

For technical assistance, pricing, or enquiries, contact us at: [email protected]

Browse our complete range of Copper Nickel Flanges manufactured in CuNi 90/10 (UNS C70600) and CuNi 70/30 (UNS C71500). Click on any flange type below to view detailed dimensions, applicable NAVSEA drawing numbers, figure numbers, flange drilling specifications, service ratings, and download the corresponding PDF datasheet.