Industry News

Flange joint material and classification

2023-04-17

The flange joint is a kind of component that is widely used in engineering design and involves a wide range of areas. It is an indispensable part of piping design, pipe fittings and valves, and also an essential component in equipment and equipment parts (such as manholes, sight glass liquid level gauges, etc.). In addition, flange joint are often used in other professions, such as industrial furnaces, thermal engineering, water supply and drainage, heating and ventilation, and automatic control.
Material:

Forged steel, WCB carbon steel, stainless steel, 316L, 316, 304L, 304, 321, chrome molybdenum steel, chrome molybdenum vanadium steel, molybdenum dititanium, rubber lining, fluorine lining material.

Classification:

Slip-on flanges, neck flanges, butt-welding flanges, ring joint flanges, socket flanges, and blind plates, etc.

Executive standard:

There are GB series (national standard), JB series (machinery department), HG series (chemical industry department), ASME B16.5 (American standard), BS4504 (British standard), DIN (German standard), JIS (Japanese standard).

International pipe flange standard system:

There are mainly two systems for international pipe flange standards, namely the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange.