GB/T 5223.3-2017 Translated English of Chinese Standard. (GBT 5223.3-2017, GB/T5223.3-2017, GBT5223.3-2017): Steel bars for the prestressing of concretehttps://www.chinesestandard.net, 24 juni 2018 - 20 sidor This Standard specifies the terms and definitions, classification, codes and designation, ordering content, dimensions, shapes, weights and tolerances, technical requirements, test methods, inspection rules, packaging, marking and quality certification for steel bars for the prestressing of concrete. This Standard applies to plain, helical grooved, helical ribbed and ribbed round bars for the prestressing of concrete. |
Innehåll
| 3 | |
Scope | 5 |
Classification codes and designation | 7 |
Dimensions shapes weights and tolerances | 8 |
Technical requirements | 13 |
Test methods | 15 |
Inspection rules | 18 |
Packaging marking and quality certification | 19 |
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adds the specifications area of steel axis of steel bar Steel bars batch As specified bending pressure head cross sectional area determined as specified Deviatio Deviation/mm diameter of outer diameter of steel Dimensions Dn/mm ductility level elasticity modulus elongation after fracture Fatigue test Figures 1a force total elongation grooved steel bars height of transverse helical groove helical helical grooved steel helical ribbed steel impact test inner diameter Inspection item less marking and quality maximum force total nominal cross sectional Nominal dimension/mm nominal tensile strength on/mm pitch of helical plain steel bars plastic elongation strength prestressed concrete prestressed steel bars prestressing of concrete quenched and tempered regular spacings relaxation test ribbed steel bars sample quantities specified in GB/T specified in Table Specified plastic elongation straight strip Stress relaxation property supplier supporting projects Theoretical weight Tianjin tolerances of helical tolerances of ribbed transverse rib weights and tolerances width of helical