Flanges

Flanges are offered in various sizes, pressure classes and configurations. Selection depends on the applicable dimensional standard, material, operating pressure, temperature and service conditions. Detailed dimensions and material grades are provided in the General Flanges Catalogue.

Types Weld Neck, Slip-On, Socket Weld, Screwed / Threaded, Blind, Lap Joint, Long Weld Neck and Spectacle Blind. Related fittings include Weldolets.

Material

• Stainless Steel: 304, 304H, 304L, 316, 316H, 316L, 316Ti, 309, 310, 317L, 321, 347 and 904L.
• Duplex Steel: ASTM A182 F51, F53 and F55.
• Alloy Steel: ASTM A182 F5, F9, F11, F21, F22 and F91.
• Carbon Steel: ASTM A105 and ASTM A694 F42, F46, F52, F60, F65 and F70.
• Low-Temperature Carbon Steel: A350 LF2 and A516 Grade 70.
• Special Materials: Copper Nickel, Nickel, Monel, Inconel, Hastelloy and Titanium, in the grades listed in the catalogue.

Sizes and Pressure Classes

• Stainless steel and duplex steel flanges - ½″ NB to 48″ NB
• Alloy steel, carbon steel and LTCS flanges - ½″ NB to 48″ NB
• Copper and nickel alloy flanges - ½″ NB to 6″ NB

Pressure classes listed in the catalogue include 150, 300, 600, 900, 1500 and 2500. Dimensional tables also cover EN 1092-1:2007 PN 10, PN 16, PN 25 and PN 40, together with Tables D, E, F and H.

Available size and pressure-class combinations depend on the flange type, material and applicable standard. Refer to the catalogue for detailed dimensions.

Certifications Manufacturer’s test certification, EN 3.1 / 3.2 certification and IBR Test Certification Form IIIC, as applicable to the agreed supply scope.

Catalogue Download the General Flanges Catalogue for material grades, flange configurations, dimensional drawings and selection tables.