... 3.made to order The company's products of prestressed concrete strand and wire are mainly implemented GB/T5223-2002, GB/T5224-2003 ... the company's major products.Product TypeMajor SpecificationShapeHard drawn and PC smooth steel3.00, 4.00, 5.006.00, 7.00 ... , 6.007.00, 8.00 Prestressed spiral rib wire4.00, 5.006.00,7.00,8.00 prestressed concrete strand1×21×310.00, 12 ...