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摘自上海市地方标准ＤＢ３１／Ｔ－１９９９《住宅装饰装修验收标准》８．２ＰＶＣ塑料门窗８．２．１材料要求及验收当门、窗构件长度超过规定尺寸时，其内腔必须加衬增强型钢，增强型钢的壁厚应不小于１．２ｍｍ。８．２．２基本要求及验收方法门窗的品种规格、开启方向...
Excerpted from Shanghai Local Standard DB31/T-1999 “Residential Decoration Acceptance Criteria” 8.2 PVC Plastic Door and Window 8.2.1 Material Requirements and Acceptance When the length of the door and window member exceeds the specified size, the inner cavity must be lined with reinforced steel. The wall thickness of reinforced steel should not be less than 1.2mm. 8.2.2 Basic Requirements and Acceptance Methods Variety specifications, opening direction of doors and windows...