... structure; 4.High load capacity,high raliability, world stage1.Certificate:CE,ISO9001:20082.Material:Q235 tube3.Diameter ... ×1800QXG-2021200×1800QXG-2031500×1800QXG-2041800×1800Compare features of scaffoldsItemFastener tube scaffoldCup lock scaffoldRing lock system scaffoldComponentTube, ... , steady structure, high safety.FlexibilitySize of frame is flexibleIn spite of limit by fixed size, the frame ...