By production method

(1) Hot rolled steel sheet
(2) Cold rolled steel sheet

By purpose
(1) Bridge steel plate
(2) Boiler steel plate
(3) Shipbuilding steel plate
(4) Armor steel plate
(5) Automobile steel plate
(6) Roof steel plate
(7) Structural steel plate
(8) Electrical steel sheet (silicon steel sheet)
(9) Spring steel plate
(10) Solar panels (Hairui Special Steel)
(11) Other Japanese grades commonly found in ordinary and mechanical structural steel plates.

International stainless steel marking method

The American Iron and Steel Institute uses three digits to designate various standard grades of malleable stainless steel. in:
1. Austenitic stainless steels are marked with numbers in the 200 and 300 series.
2. Ferritic and martensitic stainless steels are represented by numbers in the 400 series. For example, some of the more common austenitic stainless steels are designated 201, 304, 316 and 310.
3. Ferritic stainless steels are marked with 430 and 446, and martensitic stainless steels are marked with 410, 420 and 440C, duplex (austenite-ferrite).
4. Stainless steel, precipitation hardening stainless steel, and high alloys with less than 50% iron are usually named by patent names or trademarks.

Product Parameters