[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

承重选型经验值:M6单个膨胀螺栓在C25混凝土上抗拉约3-5kN(约300-500kg理论值),实际使用应按理论值的1/4取安全系数,挂重物如热水器、空调外机建议M10以上并用2-4个分散受力

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