GB/T 3280 covers cold-rolled stainless steel wide strip, cut-to-length plate from coil, and slit strip, classified by microstructure into austenitic, ferritic, duplex, martensitic, etc.

Procurement key points: - Grades use unified numerical codes (e.g., 022Cr19Ni10 corresponds to 316L). - Mechanical properties are specified by delivery condition; note the distinction between annealed and hard conditions. - Surface quality is agreed by designations such as 2B, BA, No.4, etc. - Dimensional tolerances refer to GB/T 708; the deviation grade must be stated in the contract.

During acceptance, check item by item against the standard clauses; do not merely write "conforms to national standard".