GB/T 13237-1991 in English

《GB/T 13237-1991优质碳素结构钢冷轧薄钢板和钢带》由TC183（全国钢标准化技术委员会）归口，TC183SC6（全国钢标准化技术委员会钢板钢带分会）执行，主管部门为中国钢铁工业协会。
本标准规定了优质碳素机构钢冷轧薄钢板和钢带的分类尺寸、外形、技术要求。试验方法、检验规则、包装、标志和质量证明书。
本标准适用于汽车、航空工业以及其它部门使用的厚度不大于4mm和冷轧优质碳素结构钢薄钢板和钢带。

1 Subject Content and Application Scope

This standard specifies the dimension classification, shape, technical requirements, test methods, inspection rules, packing, marking and quality certificate of the cold-rolled quality carbon structural steel sheets and strips.
This standard is applicable to the cold-rolled quality carbon structural steel sheets and strips within thickness no larger than 4 mm for the automobile industry, aviation industry and other departments.

2 Normative References

GB 222 "Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis"
GB 223 "Methods for Chemical Analysis of Iron, Steel and Alloy"
GB 224 "Determination of Depth of Decarburization of Steel"
GB 228 "Metallic Materials-Tensile Testing"
GB 232 "Metallic Materials - Bend Test"
GB 247 "General Rule of Acceptance, Package, Mark and Certification for Steel Plates (Sheets) and Strips"
GB 699 "Quality Carbon Structural Steels -Technical Requirements"
GB 708 "Dimension Shape Weight and Tolerance for Cold-rolled Steel Plates and Sheets"
GB 2975 "Rules for Sampling in Mechanical and Technological Testing of Steel PGB products"
GB 4156 "Metals; Cupping Testing Method (Thickness 0.2-2mm)"
GB 6394 "Metal-methods for Estimating the Average Grain Size"
GB 6397 "Metallic Materials--Test Pieces for Tensile Testing"
GB/T 13299 "Steel-Determination of Microstructure"

3 Classification and Code Number

3.1 The steel plates (sheets) and strips are divided in three groups according to the surface quality, :
Highest-quality Finished Surface I
Higher-quality Finished Surface II
Ordinary Finished Surface III
3.2 The steel plates (sheets) and strips are divided in 3 levels according to drawing level:
Deepest-drawing Level Z
Deeper-drawing Level S
Regular-drawing Level P

1 Subject Content and Application Scope
2 Normative References
3 Classification and Code Number
4 Dimensions, Shape and Tolerance
5 Technical Requirements
6 Test Methods
7 Testing Rules
8 Packing, Marking and Quality Certificate
Additional Explanations: