Unverified80% confidenceDecision RuleTime unknown
管材优先选壁厚≥1.2mm的碳钢喷塑或304不锈钢管，铝合金虽轻但反复受力易在焊点处疲劳变形；直径25-32mm的管适合握力弱者抓握
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80%
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Long-term
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Unverified承重需求高的场景（挂锅具/砧板）选304不锈钢，管壁厚度≥1.2mm；仅挂铲勺等轻物可选201不锈钢或铝合金，管壁0.8-1.0mm即可87% similarUnverified管径是稳定性关键：25mm以上不锈钢管管壁厚度≥1mm才能承受横臂力矩，铝合金架轻便但同管径承重比钢架低约30%86% similarUnverified金属置物架挂杆常见管径为12-16mm，选配挂钩时需匹配管径，太空铝挂杆内壁较薄承重不如实心不锈钢杆85% similarUnverified钢管/加厚铝合金轨道抗弯优于纯铝或塑料，窗宽超过2.5m时应选直径≥25mm钢管或中间加装吊码支撑，否则中段下垂导致滑动卡顿85% similarUnverified不锈钢管选购看壁厚与直径：管径≥25mm且壁厚≥0.8mm才不易在满载时弯曲变形，标称304不锈钢但壁厚仅0.5mm的产品晾满衣服后横杆会下垂83% similar
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