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["采购内容"]
["序号","材料名称","规格型号","备注"]
[1,"HDPE管","①外观，管材内外表面应清洁、光滑，不应有气泡、明显的划伤、凹陷、杂质、颜色不均等缺陷；\n②平均外径200mm；\n③最小壁厚7.7mm；\n④壁厚公差1.0mm；\n⑤公称压力0.6MPa，不破裂、不渗漏。\n⑥断裂伸长率≧350%\n⑦硬式透水管上半部分2/3带有小孔，下半部分1/3为不带孔"]