Introduction to alloy flange

Alloy flanges are simply understood as flanges made of alloy steel, that is to say, they are classified by materials. They also cover slip on flanges, butt welding flanges, neck flanges, threaded flanges, loose flanges, etc.

Alloy flange features

High strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, non-magnetic;

Alloy flanges are different from ordinary 20 #, Q235 and other carbon steel flanges. They are mainly used for pipes and pipelines with special characteristics, and are mostly used in high-temperature and high-pressure locations. Their common materials are 12Cr1MoV, 15CrMo, P91, P22, 10CrMo910, etc;

Specification of alloy steel flange plate

DN15-DN2000

Pressure rating of alloy flat welding flange

PN0.25MPa,PN0.6MPa,PN1.0MPa,PN1.6MPa,PN2.5MPa;

Material of alloy flat welding flange

Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;

Alloy flat welding flange sealing type

Full face plate flat welding flange (FF), raised face plate flat welding flange (RF);

Executive standard for alloy flat welding flange

Standards of the Ministry of Chemical Industry: HG20593-2009, HG20615-2009;

National standards: GB/T9119-2010, GB/T2555-81;

Standards of the Ministry of Machinery: JB/T81-94, JB/T74-94, JB/T75-94;

Marine standard: CB M1001-