bolts and nuts are firmly fixed steel column concrete base |
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| navigate by keyword : anchor assembly background base big bolt close closeup column concrete connection construction design detail element engineering equipment fastener fix fixing foundation hard heavy industrial industry iron large material metal metallic nut object pillar pole powerful rust screw screwed set stable steady steel strong structural structure support technology tool tower |
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| Huge, large bolts and nuts are firmly fixed to a steel column to a concrete base |
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