... rob 2.Standard: BS5896 GB/T5223 ASTMA421 3.Tensile strength:1570Mpa-1860Mpa 4.Month output:6000 t china factory export Screw (spiral ... ,3)Type of Surface: Helix(screw), Plain, indented. 4)Standard: GB/T 5223-2002, ASTM A416, BS5896, JISG3536, ISO9001-2000 or ... (especially tensile strength), coil weight, Packing dimension, Quantity ect. china factory export Screw (spiral)PC Wire