concrete insert

concrete insert

concrete insert
A plastic, wood fiber, or metal (often lead) plug, either built in a wall or ceiling or inserted by drilling; used as an anchor or support to hold attached loads.
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central battery emergency lighting with 50 pcs;: about 8 hr main and sub-distribution;: approximately 25 000 m lines;: approximately 10 000 m telecommunication and data lines;: approximately 3 000 m concrete insert pipes M20 to M110;: about 120 St.