[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

支撑圈材质优选高弹性钢丝(外包PVC/EVA),劣质产品用低碳钢丝易变形且反弹力弱,钢丝直径应≥2.5mm才能保证隧道自立不塌,同时钢丝接口必须有塑料保护套避免扎穿面料

1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen

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