The main standards for stainless steel heat exchange tubes are: material standards, appearance standards, technical standards and packaging standards, which will be introduced to you one by one.
1. Material standards
The materials generally used for stainless steel heat exchange tubes are 304, 321, 316L, etc. The chemical composition, mechanical properties, physical properties, etc. of the materials should comply with the corresponding international standards, such as ASTM A312, ASTM A276, ASTM A240.
2. Appearance standards
The appearance of stainless steel heat exchange tubes should comply with the standards of smooth surface, no cracks and depressions on the surface, no oxide scale on the surface, etc., and its size and weight should also comply with relevant standards.
3. Technical standards
The manufacturing and use of stainless steel heat exchange tubes should comply with the standards of manufacturing process, welding process and heat treatment process, etc., and should also comply with relevant inspection standards, such as pressure test, water pressure test and X-ray detection.
4. Packaging standards
The transportation and storage of stainless steel heat exchange tubes should comply with the standards of moisture-proof, corrosion-resistant, shock-proof, etc.