推荐回答（4个）
聚氨酯保温管道相关标准
执行 CJ/T114-2000《高密度聚乙烯外护管聚氨酯泡沫塑料预制直埋保温管》标准或EN253《用于地下水热管网的整体预制保温系统，由工作钢管，聚氨酯保温层和聚乙烯外套管组成的保温管》 钢管 无缝钢管执行 GB8163《输送流体用无缝钢管》标准 螺旋钢管执行 GB/T 9711.1—1997《石油天然气工业输送钢管交货技术条件》标准 外套管 执行 GB13018-91《聚乙烯(PE)管材外径和壁厚极限偏差》标准 产品技术参数 预制直埋保温管技术参数：
轴向剪切强度： ≥0.12MPa(23±2℃)
连续运行温度： 140℃ Max
峰值运行温度： 150℃ Max
使用寿命： ≥30年(保温层及外护层，工作钢管的使用寿命与水质有关)
管端净区长度： 200mm
管径范围： DN20-DN1200
工作钢管执行标准： DN150及以下管径采用无缝钢管，执行标准GB/T8163-1999。 DN200及以上管径采用螺旋焊管，执行标准SY/T5037-2000或GB/T9711.1
硬质聚氨酯泡沫塑料保温层技术参数：
平均孔径： ≤0.5mm
闭孔率： ≥88%
任意位置密度： ≥60㎏/m3
抗压强度： ≥0.3MPa(10%变形条件下)
吸水率： ≤10%(100℃沸水，90分钟)
低压高密度聚乙烯外护管技术参数：
密度： ≥950㎏/m3(20℃)
炭黑含量： 2.5%±0.5%(质量百分比)
导热系数： 0.43W/(m.℃)
热膨胀系数： 18010-6(1℃)
熔融指数： 0.50~0.70g(MFI 190℃/5kg)
拉伸强度： ≥19MPa
断裂伸长率： ≥350%
耐环境应力开裂： ≥200h
纵向回缩率： ≤3%
产品执行标准： CJ/T114-2000(中华人民共和国城镇建设行业标准)
保温管一般执行国标GB/T29047-2012和建设部CJ/T114-2000标准。
聚氨酯保温管用于室表里各种管道，集中供热管道，中央空调管道、化工、医药等工业管道的保温、保冷工程、输油管道工程、输汽等管道工程。硬质聚氨酯保温管自三十年代聚氨酯组成资料诞生以来，一向作为一种优秀的绝热保温资料而得到迅速开展，其运用规模也越来越广泛，更因为其施工简洁、节能防腐效果明显而被大量地用于各种供热、制冷、输油、输汽等各种管道。大量地用于各种供热、制冷、输油、输汽等各种管道。 聚氨酯导热系数小： 聚氨酯保温管壳的导热系数在保温资料中是最低的，因而能使物料的热丢失削减到最低极限。防水、防腐、耐老: PPR管材聚氨酯直埋冷水保温管道因为聚氨酯泡沫的闭孔率达92%以上,因而,用聚氨酯泡沫作为直埋管道的保温层,不只能够起保温隔热效果，并且能有效地避免水，湿气以及其它多种腐蚀性液体、气体的渗透，避免微生物的繁殖和开展。
保温管执行国标GB/T29047-2012和建设部CJ/T114-2000标准
现在执行最新标准GB/T29047-2019, 这是目前塑套钢保温管的最新执行标准。
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