Rebar coupler 1. Material: #45 high quality carbon structural steel 2. Specification: 14-40mm 3. Types: Standard type left-handed and right-handed type reducing type rebar coupler 4. Tensile strength can reach 110% of parent rebar using our country highest grade steel HRB500(630Mpa tensile strength 500Mpa yield strength) 5. Our products have the test report of national center for quality supervision and test of building engineering 6. Customer's special demand is available Our coupler has passed official test in many countries, including India, Vietnam, Russian, Saudi Arabia and China, and the coupler has used in many key projects, such as "Fuqing Neclear Power Plant""Russina over-sea bridge for APEC 2012""Sri Lanka National Art Theatre"and so on.