Applicable grades: SPCC, SPCD, SPCE
Symbol: S-steel, P-plate, C-cold, fourth digit C-common, D-stamping grade (Draw), E-deep drawing grade (Elongation) )
Heat treatment status: A-annealed, S-annealed + flat, 8-(1/8) hard, 4-(1/4) hard, 2-(1/2) hard, 1-hard .
Drawing performance level:
ZF-for punching and drawing the most complex parts,
HF-used for punching and drawing very complex parts,
F-Used for punching and drawing complex parts.
Surface processing status: D - pitted surface (roller processed by grinder and then shot peened), B - bright surface (roller finished by grinder).

Surface Quality:
FC-Advanced finishing surface,
FB-higher level of finishing surface.
Status, surface processing status, surface quality code, drawing level (only for SPCE), product specifications and dimensions, shape accuracy (thickness and/or width, length, unevenness).

Marking example: steel plate, standard number Q/BQB402,
Brand SPCC, heat treatment state annealed + smooth (S), surface processing state is pitted D, surface quality is FB grade trimmed (trimmed edge EC, non-trimmed EM) steel plate, thickness 0.5mm, B-level accuracy, width 1000mm , A-level accuracy, length 2000mm, A-level accuracy, unevenness accuracy is PF.A, then the mark is: steel plate ECQ/BQB 402-SPCC-SD-FB/ (0.5×1000A×2000A-PF.A)
Origin: Baosteel, Taiwan, Japan, GNEE STEEL, Pohang of South Korea, etc.









