Unverified80% confidenceFactTime unknown
标准膨胀螺栓（6mm）在实心混凝土墙单点承重可达15-25kg，但瓷砖面需先用玻璃钻头开孔避免瓷砖崩裂，且螺栓需穿透瓷砖打入基层墙体
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Unverified瓷砖墙面安装需用玻璃/瓷砖专用钻头先破釉再打膨胀螺栓，直接冲击钻打孔易崩瓷；不愿破坏瓷砖可选专用免钉挂钩但需接受承重上限≤5kg90% similarUnverified免打孔无痕胶挂架单点承重普遍≤3kg，超过5kg必须选膨胀螺丝打孔安装，瓷砖墙面还需配专用瓷砖钻头避免爆裂89% similarUnverified打孔安装需先判断墙体类型：实心砖墙/混凝土墙用膨胀螺栓承重可达15kg以上；空心砖或石膏板墙必须用专用飞机型膨胀管，否则单点承重不足5kg89% similarUnverified瓷砖墙面必须打孔安装扶手，膨胀螺栓应打入瓷砖后的实心墙体≥35mm，仅固定在瓷砖层或空心砖上会导致脱落风险87% similar
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