... : hot dip galvanization, electroplated zinc, spray painting, plastic painted.4. Vertical height: 1.0m-2.0m-3.0m middle disc ... tunnel, equipment installation, decoration, shipbuilding and other projects.9. Components: ledger, standard, brace, base jack, joint stick and pin, connect pin, transom ... components on the ringlock that can be lost or require durable, safety and cheap cuplock scaffolding