Alloy Steel Flanges manufactured by VikTech Fittings as per ASME, DIN, and EN standards. Available in Slip-On, Weld Neck, Blind, Socket Weld, Threaded, Lap Joint, and Orifice types. Designed for high temperature and high-pressure services, especially in boilers, refineries, and petrochemical industries. Sizes available from ½” to 48” in Class 150 to 2500. Standards: ASME/ANSI B16.5, B16.47 ASTM A182 (F1, F5, F9, F11, F22, F91) DIN PN6, PN10, PN16, PN25, PN40 EN 1092-1, BS, IS Size Range: ½” to 48” (DN15 – DN1200) Pressure Class: Class 150, 300, 600, 900, 1500, 2500 | PN6 – PN40 Face Type: RF (Raised Face) FF (Flat Face) RTJ (Ring Type Joint) Material Options / Grades: ASTM A182 F1 / F5 / F9 ASTM A182 F11 / F12 / F22 (Chrome Moly) ASTM A182 F91 (High Temp Creep Resistant) ASTM A387 Gr. 11 / 22 ASTM A213 Alloy Steels Applications: Power Plants & Boilers Petrochemicals & Refineries High Temperature Services Oil & Gas Pipelines Fertilizer Plants Pressure Vessels & Heat Exchangers