1)name:helical ribs pc wire \n2)dia: 4.00mm, 4.80mm, 5.00mm, 6.00mm, 6.25mm, 7.00mm,\n3)type of surface: helix(screw), plain, indented. \n4)standard: gb/t 5223-2002, astm a416, bs5896, jisg3536, iso9001-2000 or according to customers\' requirements \n5)tensile strength: 1470mpa-1860mpa \n6)packing and weight: coil at customer\'s requirement. (water-proof packing) \n7)minimum order: 20-25tons \n8)payment term: tt or lc \n9)usage: low relaxation wire used for prestressed steel structure, prestressed and post-tensioning technology in large, medium and small sizes of various shapes of pc structures, such as civil engineering construction of large scale railroad, highway, etc. \n10)helical ribbed pc strand wire has on the surface four consecutive convex-shaped ribs. the advantage is that it can strengthen the bond between wire and concrete, thus improves the performance of the pc products and extends its life.\n11)material swrh 77b, 82b high strength steel wire rod\n12)the relaxation at 1000 hour 1.0-2.0%\n13)inquiry please provide: standard(year), diameter, mechanical property(especially tensile strength), coil weight, packing dimension, quantity ect.