Stainless steel heat exchange tubes are an important part of heat exchangers and are mainly used for heat exchange between two media.

The difference between 904l stainless steel and 304 is: different performance, different hardness, and different content.

ASTM A312 standard specifies the specification range of stainless steel seamless pipes, with outer diameters ranging from 1/8 inch (6.4mm) to 30 inches (760mm), and wall thicknesses varying from standard (SCH 5S) to form XXS (SCH XXS) according to different pressure levels.

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The main differences between stainless steel BA pipes and ordinary steel pipes are material, corrosion resistance, service life and application areas.

TP304 generally refers to the stainless steel pipe grade in foreign standards, the most typical of which is the stainless steel pipe grade in the US ASTM and ASME standards, such as ASTM A312 TP304. 304 stainless steel is a widely used stainless steel material that can be used for a variety of materials such as steel plates, forgings, bolts, etc.