The outer diameter of the steel pipe should be 48-51mm, and the wall thickness should be 3-3 Steel pipes with severe corrosion, bending, or cracks of 5mm should not be used.
scaffolding adjustable base jack
.
Department of Housing and Urban Rural Development | Construction Position Operation Certificate | Construction Scaffolding Worker Ordinary
372 pages of word version of construction organization design of residential building (editable and downloadable)
