This standard specifies the terms and definitions, designation expression methods, classification and code, order details, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and product quality certificate in connection with prepainted steel sheet and strip.
This standard is applicable to the prepainted steel sheet and strip (hereinafter referred to as "prepainted steel sheet") for building exterior and interior applications. This standard may serve as a reference for prepainted steel sheet for household electrical appliances and other purposes.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 1766-2008 Paints and varnishes - Rating schemes of degradation of coats
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 13448 Test methods for prepainted steel sheet
GB/T 17505 Steel and steel products - General technical delivery requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
prepainted steel sheet
the product obtained by baking and curing after continuously coating organic coating materials on the steel substrate which has been subjected to surface pretreatment
3.2
steel substrate
steel strip for coating
3.3
top side
one of the two sides of the prepainted steel sheet that has higher requirements on color, coating property, surface quality, etc.
GB/T 12754-2019 The following standards are cited：
