Предварительно напряженные провода для бетона полюса

PC Steel Wire Executive Standard GB/T5223-2002 NominalDiameterDn/mmTensileQb/MpaNot less thanProvidesnon-proportionalelongation stressQp0.2/MpaNot less thanUnder thetotal elongationof the most vigorous(Lo=200mm)Gt/%Not less thanBending frequency(Times/180°)Not less than4.005.006.007.008.0015701670177011801250133011001180125013301.5445551470157016701770 Bend radiusR/mmSection shrinkageNot less than210mm torque ofthe reverse of eachis not less thanthe number of nInitial stress is equivalentto 70% of the nominaltensile strength, when,1000h after the stressrelaxation rate of R%is not greater than10353588158167206205 A 421/A 421M-05 Tensile Strength Requirements Nominal Diameter,mm (in) Tensile Strength,min,Mpa(psi) Type BA Type WA 4.88(0.192) 1725(250 000) 4.98(0.196) 1655(240 000) 1725(250 000) 6.35(0.250) 1655(240 000) 1655(240 000) 7.01(0.276) 1620(235 000) 1620(235 000) Yield Strength Requirements Nominal Diameter,mm (in) Intial Stress MPa(psi) Minimum Stress at 1% Extension,MPa(psi) Type BA Type WA 4.88(0.192) 200(29 000) 1465(212 500) 4.98(0.196) 200(29 000) 1407(204 000) 1465(212 500) 6.35(0.250) 200(29 000) 1407(204 000) 1407(204 000) 7.01(0.276) 200(29 000) 1377(199 750) 1377(199 750)