... Program.The scoreboard is build with our Ring lock system scaffold.Features 1.diameter 48 ... , DiagonalForce styleFriction, ShearAxial loadReliabilityFree frame node, diversity, low reliabilityFixed size component, steady structure, high safety.FlexibilitySize ... structure,High load capacity,high reliability,low wastage, high efficiency Ring lock system scaffold components design loadSTANDARDLEDGERSCREW ...