ASTM A335 P9 pipes are highly recognized for their very good strength and durability, with high resistance to corrosion and oxidation. These are alloyed with elements like chromium and molybdenum; thus, they also find applications in high-temperature as well as high-pressure service conditions. https://www.am-industries.com/alloy-steel-astm-a335-p9-pipes-manufacturer-exporter-suppliers.html