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型材壁厚国标要求外框主受力壁厚≥1.4mm，低于1.4mm的属于非标料，长期使用易变形，验收时用卡尺实测

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Unverified壁厚是耐用度核心，PP箱壁厚≥1.5mm才不易在负重叠放下变形塌陷，超薄款(＜1mm)半年即软化，套装低价常靠减薄壁厚实现80% similar Unverified选购PP材质透明收纳盒时，壁厚≥1.5mm才具备承压能力，可安全叠放3层以上；壁厚＜1mm的薄款仅适合单层轻物收纳，叠放易变形塌陷80% similar

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get_claim(id=352033)