Unverified75% confidenceFactTime unknown
碳钢管径与厚度决定承重：常见Φ22mm加厚管配层板可单层承重20-40kg，Φ16mm细管仅适合轻物；喷粉/静电喷涂工艺比普通烤漆更耐刮防锈
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Unverified碳钢管径≥19mm且壁厚≥0.6mm的钢制收纳架单层静载可达30kg以上，适合存放锅具、书籍等重物；管径＜16mm的多为装饰性用途，单层承重通常＜10kg88% similarUnverified碳钢管径≥19mm或层板厚度≥1.2mm的置物架单层承重可达30kg以上，适合放置微波炉、锅具；层板厚度≤0.8mm的薄铁板架子单层实际安全承重仅5-10kg，只能放轻物88% similarUnverified碳钢管径≥19mm且带横向加强杆的层架单层静态承重可达30-50kg，纯塑料PP层架单层承重通常仅5-15kg，放置微波炉/整箱矿泉水必须选钢制86% similarUnverified承重立柱选择直径≥25mm的碳钢管（壁厚≥1.0mm），单杆挂衣承重可达30kg以上；直径19mm或以下的薄壁管长期挂重外套易在中部弯曲变形86% similarUnverified碳钢冷轧管壁厚≥0.8mm且带三角加固件时，单层承重可达15-20kg，适合放微波炉、书籍等重物；壁厚＜0.6mm的低价钢架单层承重多在5kg以下，仅适合放置轻物86% similar
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