unbondend prestressed concrete steel strand 1. Diameter: 6.35-15.24 mm. 2. Structure: 1x2.1x3.1x7. 3. Strength Grade: 250/270 unbondend prestressed concrete steel strand, suitable for cast-in-placeconcrete of long-span and wide buildings, large load prefabr 1.standard: ASTM A416, BS5896, EN 10138, GB/T 5224, JISG , KS , AS, and so on, or the specialrequirement of the client. 2, the size: 1*3: 6.5MM; 8.6MM; 10.8MM1*7: 7.9MM; 9.3MM; 9.53MM; 11.1MM; 12.5MM; 12.7MM; 12.9MM; 15.7MM AND SO ON 3, our availability: 10000 Metric ton / month 4, the certification we have: Norway, UK, Australia, South Korea, Germany, Malaysia, Thailand, ISO 9001; Swenden, 5, the pc steel products we can provide: pc steel strand, pc indented strand, pc spiral rib strand, pc strand with grease, pc steel wire, pc wire, pc indented wire; pc spiral rib wire, pc steel bar, anchorage, Low carbon wire and so on, 7, if you want know more of us, pls email to me, I am hold on on your email all the time. and it will be answered promptly. ASTM A416/A416M-2000 ( P.C STRAND) Grade Nomal dia (mm) Wire dia(mm) Tolerance (mm) Cross section area (mm2) Re .mass (g/m) 250 1/2(12.70) +0.016(+0.40) +0.016(-0.40) 0.003(0.0762) 0.144(92.9) 490(730) 6/10(15.24) +0.016(+0.40) +0.016(-0.40) 0.004(0.1016) 0.216(139.4) 737(1094) 270 3/8(9.53) +0.026(+0.65) +0.006(-0.15) 0.002(0.0508) 0.085(54.8) 290(432) 1/2(12.70) +0.026(+0.65) +0.006(-0.15) 0.003(0.0762) 0.153(98.7) 520(775) 6/10(15.24) +0.026(+0.65) +0.006(-0.15) 0.004(0.1016) 0.217(140.00) 740(1102) Grade Nomal dia(mm) Minimum Breaking load(KN) Min load at1% Extension (KN) Minimum elongation at Max Load Low relaxation Nomal relaxation Normal Pitch Minimum elongation at Max Load 250 1/2(12.70) 36000(160.1) 32400(144.1) 30600(136.2) 24(610) 3.5 6/10(15.24) 54000(240.2) 48600(216.1) 45900(204.2) 270 3/8(9.53) 23000(102.3) 20700(92.1) 19580(87.0) 24(610) 3.5 1/2(12.70) 41300(183.7) 37170(165.3) 35100(156.1) 6/10(15.24) 58600(260.7) 52740(234.6) 49800(221.5) Nominal max load The relaxation at1000h Low relaxation 70%Specified min.breaking strength 2.5 80%Specified min.breaking strength 3.5
