Unverified90% confidenceDecision RuleTime unknown
钢结构防火涂料按厚度分为薄型（≤3mm，耐火0.5-1.5h）、厚型（8-50mm，耐火2-3h）；耐火极限要求≥2小时的承重钢柱应选厚型，室内外露钢梁常用薄型或超薄型
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