What is the product standard of 304 stainless steel?

① Austenitic stainless steel is marked with 200 and 300 series numbers, for example, some of the more common austenitic stainless steel is marked with 201, 304, 316 and 310.

② Ferrite and martensitic stainless steel are represented by 400 series numbers.

③ Ferritic stainless steel is marked with 430 and 446, martensitic stainless steel is marked with 410, 420 and 440C,

④ biphase (austenite-ferrite), stainless steel, precipitation-hardened stainless steel and high alloys with iron content of less than 50% are usually patented or trademark names.

GB1220-2007 Stainless Steel bar (Grade I) GB4241-84 Stainless steel welding disk (Grade H)

GB4356-2002 Stainless Steel welding disk (Class I) GB1270-80 stainless steel pipe (Class I)

GB12771-2000 Stainless Steel welded pipe (Y level) GB3280-2007 Stainless steel cold plate (I level)

GB4237-2007 Stainless Steel Hot plate (Class I) GB4239-91 Stainless Steel Cold Strip (Class I)