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["采购内容"]
["序号","材料名称","规格型号","备注"]
[1,"PVC管材","（de315,0.63MPa）"]
[2,"PVC管材","（de200,0.63MPa）"]
[3,"PE管材","（de90，0.63MPa，立管）"]
[4,"PE管材","（de160，0.63MPa，套管）"]
[5,"PVC管材","（de250,0.63MPa）"]
[6,"钢管","（DN200）壁厚≥6mm"]