Ringlock scaffolding standard(vertical) 1.Made of 48.3x3.2mm the tube,steel grade:Q235 or Q345;welded with ringlock scaffolding rosettes with every interval of 50mm,no welding defect,passing press test;the ledger end and the rosette fit well together with the wedge pin to make stable ringlock scaffoling 2.Surface finish:hot dip galvanised long lasting from rusted,powder coated or painted protecting the surface with less cost,the powder or paint is with strong adhision to the tubes 3.Various sizes are available