316L stainless steel pipe is preferred over 304 in the pharmaceutical industry due to its superior corrosion resistance and lower carbon content, which ensures better purity and weld integrity in high-sanitation environments.

SS 347 stainless steel pipe offers better high-temperature resistance and intergranular corrosion resistance than SS 304, making it ideal for heat-intensive and welded applications.

ASTM A312 TP316L is widely used for subsea and onshore liquid ammonia transportation pipelines due to its excellent corrosion resistance and weldability in harsh environments.

1.4845 stainless steel is equivalent to AISI 310S, a high-temperature austenitic stainless steel.

EN 1.4539 stainless steel is equivalent to ASTM 904L (UNS N08904), a high-alloy austenitic stainless steel known for exceptional corrosion resistance in harsh chemical and marine environments.

EN 1.4550 stainless steel is equivalent to AISI 347, also known as X6CrNiNb18-10, a niobium-stabilized austenitic stainless steel with excellent resistance to intergranular corrosion.