Unbonded Pc strand 1.Size: 9.53, 11.11, 12.7, 15.24mm ... . T/S: 1860Mpa Name Dia. Tensile Strength Standard Unbonded Pc strand 9.53mm-15.24mm1770Mpa-1860MpaGB5224, , ASTM A 416, BS 58961 ... , GB5224, JISG 3536 etc...4. Usage: The strand is mainly used as auxiliary reinforcing strand for concrete structure, e.g. long spanned ... the standard, quantity, packing and coil weight requirement. unbonded pc strand