standard-guide

JIS G3302 Galvanized Steel Sheet Grade Guide: SGCC to SGCE — Coating Weight, Grades, and Specifications

JIS G3302 covers hot-dip galvanized cold-rolled steel in five formability grades from SGCC to SGCE. Full guide to the Z-code coating weight system, surface treatment options, galvannealed (ZF) variant, and ASTM A653 / EN 10346 equivalents.

JIS G3141 Cold-Rolled Steel Sheet Grade Guide: SPCC, SPCD, SPCE, SPCF, SPCG

JIS G3141 covers five cold-rolled steel sheet grades from SPCC (general) to SPCG (super deep drawing IF steel). Full comparison of composition, elongation, r-value, and ASTM/EN equivalents — with application decision table.