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
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Construction technology of external wall socket type buckle scaffolding, detailed explanation through video animation!
Department of housing and urban rural development issued: management measures for staffing and on-the-job performance of key posts on
