Rebar Coupler, Steel Bar Coupler manufacturer / supplier in China, offering 45c Steel Rebar Sleeve Upsetting Connection Straight Thread Sleeve Rebar Coupler 16-50mm Factory Price, Upsetting Threading Rebar Coupler Used for Building Construction High Qualityu14-U40, D16-50mm Parallel Thread Coupler for A500 Grade Rebar Carbon Steel Upsetting Rebar Connectors Durable Joint and so on.