Unverified85% confidenceDecision RuleTime unknown

打孔安装在承重墙/砖墙用普通膨胀螺丝即可，但空心砖、加气块墙体需用专用蝴蝶膨胀螺栓或化学锚栓，否则孔位会松脱失效

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85%

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墙面置物架category

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Unverified膨胀螺丝安装要求墙体为实心砖墙或混凝土；空心砖、石膏板隔墙需改用中空锚栓（蝴蝶膨胀）或飞机型锚栓，否则会整块拉裂89% similar Unverified膨胀螺栓仅适用于实心墙体（混凝土、实心砖），空心砖、加气块、石膏板墙上安装会因膨胀套无法有效撑开而失效，此类墙体应改用中空墙锚栓或化学锚栓88% similar

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