ASTM A333 Grade 6 pipe for low temperature services at above -45℃. ASTM A333 Grade 6 pipe is common use material for low temperature services in above -45℃, with yield strength minimum at 240 Mpa, and tensile strength 415 Mpa. https://www.wilsonpipeline.com/product-category/stainlessduplex-steel-pipe.html/page/2