Raw materials: 45# hign-quality carbon steel structural steel Diameter: 14mm-40mm Thread pitch: 2.5/3.0 Standard thread angel: 75° Use: Connect two pieces of rebar together, simple to operate Our rebar couplers are suitable for steels of different countries. Tensile strength could reach 600 Mpa. Normal steel, for example, HRB335, the tensile strength reaches 500.5Mpa We could pack the goods according to customer’s requests.