Discover top-quality Weld Neck Flanges by a trusted manufacturer. Our ASTM A105N flange measures 2-1/16 inches and complies with API 6A and TYPE API 6B standards. With a robust API 5000 PSI rating, SCH XXS thickness, and RTJ End, these flanges are NACE MR-0175 and ISO 15156 certified for superior performance and reliability.