Unbonded steel strands are made of high carbon steel wire rods SWRH82B and have the characteristic of high tensile strength, strong resistance to corrosion, steady modulus of elasticity, relieved stress, low friction, separation from concrete, and mobility through continuous drawing, stabilization treatment, and resin and PE coating to meet the JG 161 and JT/T 771 standards. Unbonded steel strands are primarily used in prestressed steel structures, various highway and railway bridges, plant buildings, high-rise buildings, prestressed facilities, foundation pillars, building renovation reinforcement, overpasses, television towers, water towers, concrete silos, sewage disposal, rock anchoring, water resource management, and hydroelectricity infrastructure.

Epoxy-coated steel strands are made of high carbon steel wire rods SWRH82B and have the characteristic of high tensile strength, steady modulus of elasticity, relieved stress, high adhesion with concrete, outstanding insulation, strong resistance to cathode decomposition, a steady chemical property of coating, resistance to abrasion through continuous drawing with large deduction stranding, stabilization treatment, and epoxy coating to meet the GB/T 21073 standard. Epoxy-coated steel strands are primarily used in the bridges and electric poles where corrosion media are abound in their surroundings, as well as stay cables of cable-stayed bridges, chemical plant facilities, garages, and sewage disposal ponds.