Ringlock Diagonal Brace consists of a steel pipe with a diagonal brace head bolted on both ends and two wedge pins. The wedge pin is used to fix the diagonal brace head onto the ring plate firmly by inserting it into the ring plate through the hole on the diagonal brace head. Ringlock Diagonal brace is used to connect two adjacent ringlock scaffoldstandards at different horizontal lines via diagonal brace heads at both ends, thereby forming a triangle with the standard and the ledger and providing a more stable ringlock scaffolding system based on the theory of triangular stability.