Unverified80% confidenceDecision RuleTime unknown
管材壁厚≥1.0mm且直径≥25mm的钢管抗弯性明显优于壁厚0.6mm的薄管，同样标称承重下薄管中间会下垂
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Related Claims
Unverified管材直径和壁厚是承重的核心，直径≥22mm、壁厚≥0.6mm的不锈钢管抗弯能力明显更强；细管产品放重物会中间下沉变形93% similarUnverified钢管壁厚≥2mm、方管（50x50mm或以上）比圆管抗扭性更好，主承重立柱应为方管；壁厚不足1.5mm的圆管在大重量下会晃动变形92% similarUnverified管材直径与壁厚共同决定抗弯：φ25mm×0.8mm钢管的抗弯性远优于φ32mm×0.5mm薄壁管，选购看壁厚比看直径更可靠92% similarUnverified框架管径直接决定承重：钢管方管≥1.2mm壁厚、25mm以上截面才适合重载；壁厚＜0.8mm的薄壁管长期放重物易变形弯曲90% similarUnverified钢管直径是承重关键，管径≥19mm（约6分管）比13mm细管抗弯性显著更强，选购时看管壁厚度≥0.6mm避免踩踏或压重变形90% similar
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