it's frame system,can be used in small building and ... as cuplock,layher,plettac,ringlock,kwik-stage,frame,guardrails and accessories,couplers, formworks, barriers, walk platforms, steel planks, shoring props ,etc ... America,Southeast Asia,and Africa. so this kind of frame scaffolding,it's very easy to be uesed for everybody ... in painting,hot dipped,electro galvanized,powerd coating! frame scaffolding