Grades 304 and 316 are the two most specified austenitic stainless steels. They look identical, but they behave very differently in chloride-rich or chemical environments.
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Both seamless and welded stainless steel tubes are widely used. The right choice depends on pressure, temperature, inspection requirements and budget.
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In thermal power stations, flue-gas erosion quietly thins boiler tubes until they leak. Sacrificial stainless steel shields are a low-cost way to protect them.
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Four ASTM specifications cover most stainless steel tube and pipe orders. Picking the right one avoids rejected material and inspection delays.
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