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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Gao Yun: Stand tall and plan to catch up with the previous step of “construction”, and the higher quality can be felt
The official release of safety management points for double row steel pipe scaffolding with socket type buckle and floor standing structure
The construction contract does not stipulate the responsibility after the subcontract is invalid, and the employer knows the subcontracting
The Municipal Urban Management Bureau is filing a case according to law to investigate the disaster caused by brutal construction
