carbon steel flanges Supplier in Mumbai

Carbon steel reaches a different performance tier under ASTM A694, hitting yield strengths from 42,000 PSI to 70,000 PSI across grades F42 through F70. A105 flanges cap out below this range entirely. Subsea systems, gas transmission lines and high-pressure injection pipelines rely on that added strength margin. Higher grades permit thinner wall sections at equal pressure ratings, trimming weight while holding burst strength steady.

Carbon steel reaches higher tensile strength per unit cross-section at high-yield grades. That extra margin lets engineers reduce wall thickness on flange design without giving up pressure integrity. Offshore and cryogenic projects benefit most: less weight means faster crane cycles, lower vessel-day costs, and safer handling on deck.

Navgraha Steels is a supplier of ASTM A694 / ASME SA694 flanges. We provide these flanges in sizes from 1/2″ to 48″, dimensioned to ANSI/ASME B16.5, B16.47 Series A and B, B16.48, DIN and EN-1092 standards. Available pressure classes run from 150# through 2500#, along with PN6 to PN64 metric ratings. Face types include Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ). Grades available in stock include F42, F46, F52, F56, F60, F65, and F70. Each grade designation reflects the minimum yield strength in ksi. F52 suits natural gas transmission; F65 and F70 serve high-pressure injection and subsea tie-in assemblies.

Navgraha Steels maintains a ready inventory across weld neck, slip-on, blind, socket weld, lap joint, ring type joint, spectacle blind, orifice, and expander flanges in A694 grades. Long weld neck and nipoflange configurations are also available on request.

Subsea oil and gas pipelines, gas injection systems, high-pressure process lines in petrochemical plants, nuclear piping circuits, and cryogenic service all rely on A694 flanges. Onshore gas transmission at pressures above 1,500 PSI typically specifies F52 or higher to maintain adequate safety margins at operating temperatures.