What are the main materials of medium and low pressure pipe fittings flanges?

Medium and low pressure pipe fittings flanges are mainly made of carbon steel, cast iron, and stainless steel.

Carbon steel is a common flange material, with good corrosion resistance, mechanical properties, and weldability, able to withstand high pressure and temperature, so it is often used as a manufacturing material for medium and low pressure pipe fittings flanges. Cast iron flanges are usually suitable for low pressure, low temperature, and general fluid and gas transportation pipelines and equipment. Although their strength is relatively low, they are cheaper and suitable for some low-pressure projects.

In addition, stainless steel flanges also occupy a certain market share in medium and low pressure pipe fittings flanges. Stainless steel has good anti-rust performance, especially its acid resistance and high temperature resistance, so it is often used in pipeline systems in chemical, pharmaceutical, and other industries. Although the cost of stainless steel flanges is higher, their performance advantages are highlighted in specific environments such as high temperature, high pressure, and strong corrosive media.

In summary, the material selection of medium and low pressure pipe fittings flanges depends on the specific use environment and engineering requirements. Different materials have different performance characteristics and need to be selected according to actual conditions. When selecting flanges, in addition to the material, factors such as specifications, connection methods, and sealing performance should also be considered to ensure the safe, stable, and efficient operation of the pipeline system.