1 Scope
This standard specifies definition, classification, designation, size, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and certification of cold-rolled ribbed steel wires and bars
This standard is applicable to cold-rolled ribbed steel wires and bars used for prestressed concrete, ordinary reinforced concrete and welded mesh (hereinafter referred to as bar).
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-2002, ISO 6892: 1998(E), EQV)
GB/T 232 Metallic materials - Bend test (GB/T 232-1999, ISO 7438: 1985(E), EQV)
GB/T 238 Metallic materials - Wire - Reverse Bend Test
GB/T 701 Hot Rolled Low Carbon Steel Wire Rods
GB/T 2101 General Requirements of Acceptance, Packaging, Marking, and Certification for Section Steel
GB/T 2103 General Provisions for Checking, Packing, Marking and Quality Certification of Steel Wire
GB/T 4354 Hot Rolled Quality Carbon Steel Wire Rod
GB/T 10120 Metallic Materials - Stress Relaxation Test
GB/T 17505 Steel and Steel Products: General Technical Delivery Requirements
YB/T 081 Rule for Rounding Off of Numerical Values and Judgment of Testing Values for Technical Standards of Metallurgy
3 Terms and Definitions
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification and Designation
5 Size, Shape, Weight and Permissible Deviation
6 Technical Requirements
7 Test Methods
8 Inspection Rules
9 Packaging, Marking and Certification
Appendix A (Normative) Determination Method of Overall Elongation for Bar under Maximum Force
Appendix B (Informative) Reference Designation and Chemical Composition of Wire Rod for Cold-rolled Ribbed Steel Wires and Bars
