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["3套热水系统补、回水管道改造内容明细"]
["序号","名称","规格型号","单位","数量","备注"]
[1,"PP-R发泡管","内PPR管、中间聚氨酯发泡、外PVC管保护、De50","米",60]
[2,"PP-R管","De75","米",12]
[3,"橡塑保温管","De75","米",12]
[4,"铝板","0.3mm","米",12]
[5,"蝶阀","DN65","个",3]
[6,"截止阀","De50","个",6]
[7,"黄铜电磁阀","DN40","个",3]
[8,"截止阀","De40","个",9]
[9,"PPR外牙弯头","De75","个",6]
[10,"PPR外牙弯头","De50","个",6]
[11,"PPR配件（弯头、三通、直通等）","De50-75","批",1]
[12,"辅材（生料带、麻丝、油漆等）",null,"批",1]
["技术要求："]
["1.根据图1改造成双补水和双回水，所有供水增加阀门控制；总补水电磁阀前增设阀门，并更换电磁阀；增加1根2水箱的连通管并增设阀门。"]
["2.阀门的工作压力按照1.0MPa选定。DN≤50mm时，选用铜质截止阀，DN>50mm时，选用Z45T-1.0型闸阀。"]
["3.所有增设管道需做保温处理，室外热水管材采用PP-R塑铝稳态复合管，热熔连接。保温材料选用泡沫橡塑制品或者复合管保温。采用泡沫橡塑制品的，保温层厚度管道管径≦DN80者为40mm,管径﹥80者为50 mm，外包0.35mm厚铝板或薄钢板保护。"]
["4.立面管道需采用支架固定。"]

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