1、ICS 91.140.60P46CJ中华人民共和国城镇建设行业标准CJ/T480-2015高密度聚乙烯外护管聚氨酯发泡预制直埋保温复合塑料管Prefabricated directly buried comessite insulating pipes with polyurethane(PUR)foamed-plastics and high density polyethylene(PE)casing pipes2015-11-23发布2016-04-01实施中华人民共和国住房和城乡建设部发布CJ/T480-2015GB/T29046城镇供热预制直埋保温管道技术指标检测方法GB/T2904
2、7高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件IS)17455塑料管道系统多层管阻隔层氧气渗透性能的测定(Plastics piping systems一Multilayer pipes-Determination of the oxygen permeability of the barrier pipe)NFEN15632-2城镇保温管预制柔性管系统第2部分：一体式管系统要求和试验方法(District heating pipes-Pre-insulated flexible pipe systems-Part 2:Bonded plastic service pipes-Re
3、quirements and test methods)BRL56O9建筑外热水配送用预制保温柔性塑料管道系统(Pre-insulated flexible plastics pipingsystems for hot water distribution outside buildings)3术语和定义、缩略语下列术语和定义、缩略语适用于本文件。3.1术语和定义3.1.1高密度聚乙烯外护管聚氨酯发泡预制直埋保温复合塑料管prefabricated directly buriedcomposite insulating pipes with polyurethane(PUR)foamed-pl
4、astics and high density polyethylene(PE)casing pipes由外护管、支架、保温层、工作管组成的保温管道。宝外护管为高密度聚乙烯管材，保温层为聚氨酯硬质泡沫塑料，工作管为无规共聚聚丙烯(PPR)管材戒氟化聚氯乙烯(PVC-C)管材或耐热聚乙烯(PERT)管材或聚丁烯(PB)管材。3.1.2工作管service pipe保温复合塑料管中，用于输送介质的管材。3.1.3支架guiding holder保温层内为防止作管和外护管偏心而设置的支承构件。3.1.4保温层insulating layer在工作管与外护管之间，为保持管道输送介质温度而设置的保温材料层。3.1.5外护管outer protective pipe保温层外，阻挡外力和环境对保温材料的破坏和影响的套管。3.1.6不圆度ovality保温复合塑料管同一横截面的最大直径与最小直径的差值除以最小直径的百分数。3,2缩略语下列缩略语适用于本文件。PP-R:无规共聚聚丙烯(polypropylene randomcopolymer)PVC-C:氯化聚氯乙k烯(chlorinated poly(vinyl chloride)PE-RT：型耐热聚乙k烯(polyethylene of raised temperature resistance type)
