GB 13788-2008: Translated English of Chinese Standard. GB13788-2008: Cold Rolled Ribbed Steel Wires and BarsThis Standard specifies definitions, classification, designation, dimension, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, package, marking and quality certificate of cold rolled ribbed steel wires and bars. This Standard is applicable to the cold rolled ribbed steel wires and bars used for prestressed concrete and ordinary reinforced concrete; it is also applicable to the cold rolled ribbed steel wires and bars used for manufacture of welded mesh. |
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Contents
3 | |
Technical Requirements | 10 |
Appendix B Informative Reference Designations and Chemical Compositions | 17 |
Common terms and phrases
1000h relaxation rate angle between transverse Appendix bar shall conform cold processing cold rolled ribbed cold-rolling delivered in straight deviation of steel Deviation of Three-Side diameter of steel Figure A.1 height at 1/4 height of transverse inspection and acceptance Inspection Items Judgement of Testing load-lasting Marking and Quality maximum force Measurement after Broken Mechanical properties Metallic Materials midpoint height oblique angle permissible deviation pieces per batch prestressed concrete process performance properties and process provisions of GB/T provisions of Table Quality Certificate Relative rib area Reverse Bend Test rib and steel rib height rib spacing rib top width ribbed steel bar ribbed steel wires rolled ribbed steel Sampling Methods specimen length steel bar axis Steel Bar Surface Steel Wire Rods Stress relaxation test surface of steel Tensile test test methods theoretical weight three-side ribbed steel total elongation transverse rib two-side ribbed steel weight and permissible Weight deviation wires and bars