253 MA [S30815] Tubes, commonly referred to by its universal designation UNS S30815, constitutes a highly performance-driven type of austenitic stainless steel tubing specimen that has an application predominantly in higher temperature-embarked settings and those with an oxidizing nature. These tubes are fit by manufacture as per foreign standards such as ASTM A213 and ASTM A312 speci... https://www.hindco.co.in/253-ma-s30815-tubes-manufacturer-exporter-supplier-stockist.html