Unverified90% confidenceDecision RuleTime unknown
室外、卫浴、阳台等潮湿或淋雨环境应选304不锈钢膨胀螺丝，普通碳钢镀锌件在潮湿环境1~2年内易锈蚀导致连接失效
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90%
Confidence
Long-term
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Unverified潮湿环境（浴室/厨房/户外）必须选304不锈钢螺丝，碳钢镀锌螺丝在潮湿环境1-2年即锈蚀导致强度下降甚至断裂92% similarUnverified潮湿环境（浴室/厨房/户外）必须选304不锈钢或热镀锌螺丝，普通碳钢发黑/镀彩锌螺丝1-2年会锈蚀导致强度下降甚至断裂91% similarUnverified阳台/浴室等潮湿环境必须选304不锈钢或表面喷塑处理的钢管，普通镀铬/电镀铁管在潮湿环境3-6个月接口处即开始锈蚀掉漆89% similarUnverified浴室、户外阳台等潮湿环境应选304不锈钢挂钩，201不锈钢在盐雾/潮湿环境3-6个月即出现锈斑，铁镀锌件寿命更短88% similarUnverified碳钢喷塑架比不锈钢便宜但潮湿环境（浴室、封闭阳台）喷塑层一旦划伤就会从内部锈蚀鼓包，长期潮湿场景应选304不锈钢或阳极氧化铝88% similar
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