Stainless Steel Pipes - American vs. European Standards

American - US - vs. European - German, British (UK) and Swedish - stainless steel pipe standards. Compare American (AISI) and European stainless steel standards across UK (BSI), Germany (Werkstoff Nr., DIN 17006), and Sweden (SIS) designations.

USA (AISI)	UK (BSI)	Germany (Werkstoff Nr.)	Germany (DIN 17006)	Sweden (SIS)
304	304S15, 304S16	1.4301, 1.4303	X 5 CrNi 18 10, X 5 CrNi 18 12	23 32
304L	304S11	1.4306	X 2 CrNi 18 11	23 52
310	310S24	1.4845	X 12 CrNi 25 21
316	316S31	1.4401	X 5 CrNiMo 17 12 2	23 47
316L	316S11	1.4404	X 2 CrNiMo 17 13 2	23 48
317L	317S12	1.4438	X 2 CrNiMo 18 16 4	23 67
321	321S31	1.4541, 1.4878	X 6 CrNiTi 18 10, X 12 CrNiTi 18 9	23 37
347	347S31	1.4550	X 6 CrNiNb 18 10	23 38