Sizes and supply range
- NPS 1/2 to 24 inch under ASME B16.5
- Larger sizes under ASME B16.47
- Classes 150, 300, 600, 900, 1500 and 2500
- RF, RTJ and FF facing as applicable
Normalized forged carbon-steel flanges for pressure piping, supplied in standard facing and pressure classes.

Steel Gems supplies ASTM A105N Carbon Steel Flanges for industrial maintenance, projects and export requirements. Every offer is reviewed against the stated material grade, dimensional standard, size, schedule or pressure class, quantity, testing scope and delivery requirement.
For a technically complete quotation, send the product description, applicable specification, size, thickness or schedule, end connection, quantity, required MTC, inspection agency and delivery location.
N indicates a normalized heat-treatment condition requested for the forging.
ASME B16.5 generally covers NPS 1/2 through 24; ASME B16.47 covers selected larger-diameter flanges.
Steel Gems supports material certification, heat-number traceability, NABL laboratory testing, NDT and third-party inspection for ASTM A105N Carbon Steel Flanges when required by the purchase specification.