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Duplex steel flanges, also known as composite phase steel flanges. A steel composed of a two-phase structure of martensite or austenite and a ferrite matrix. Generally, the steel composed of ferrite and austenite phase structure is called duplex stainless steel, and the steel composed of ferrite and martensite phase structure is called duplex steel. Dual-phase steel is obtained by low-carbon steel or low-alloy high-strength steel after critical zone heat treatment or controlled rolling.

Stainless steel flanges are essential components in piping systems. They are critical for connecting pipes, valves, pumps, and other equipment to form a complete network. The advantages of using stainless steel flanges are numerous and diverse. In this article, we will explore the characteristics and advantages of these important components.

Stainless steel flanges, with appropriate addition of stable elements such as Ti, Nb, Mo, etc. to improve corrosion resistance and weldability, have better weldability than chromium stainless steel flanges. When using the same type of chromium stainless steel flange welding rods (G302, G307), preheating above 200 ℃ and tempering treatment around 800 ℃ after welding should be carried out.

Biphasic steel flange is a biphasic steel bar steel ingot or plate as raw materials and produced flange, referred to as biphasic steel flange, flange is also known as flange or flange. The following is the introduction of dual-phase steel flange application principle for launching steam.

In life, we will find that you see the regular stainless steel flange, each outer ring above will have some capital letter marks, these obvious steel marks, is to let us distinguish between the flange, different letters represent different meanings, different pressure values and diameters, stainless steel flange manufacturers take you to understand, so that you see the next time, Can accurately distinguish different flanges.