pc strand hs code: 7312 1x7 low relaxation pc strand products application: bridge, plane airport, common construction, high buildings, tunnel fixation, electrical facilities, irrigation works; executive standard: gb/t5224-2002, bs5896, jisg3536, astma416, as1311; nominal diameter: 9.30mm, 9.53mm, 11.11mm, 12.50mm, 12.70mm, 12.90mm, 15.24mm, 15.70mm, 17.80mm; tensile strength: 1770mpa-1860mpa; packing: coil id 800mm, coil od 1300mm, coil width 750mm, coil weight 3-3.8mt;