stainless steel sheet china supplier304L lower carbon content than the 304, the better the corrosion resistance, so can be used instead of 304 material. Does 304L meet 304 of requirements , and than 304 better , seems can automatically alternative 304 , but from mechanical performance see , 304 of strength than 304L high , dang by 304 design Shi , with 304L alternative , on will caused strength enough ; also , in in China pressure container standard GB150-1998 in the 4.1 . 6 section provisions : Olympics 's body stainless steel of using temperature than 525 ℃ Shi , steel in the containing carbon volume should does not is less than 0.04 . Therefore, think 304L can be used instead of 304 view is wrong, can we use use - related, and in accordance with the provisions of capacity planning, none of us has the right to " material maintenance ", only original design department can have the right to " material maintenance " work.316l