耐热聚乙烯（ PE-RT II型）供热管道工程技术 规程 Techn ical specification for heating pipe engineering of polyethylene of raised temperature resistance （PE-RT II） 全国团体标准信息平台 全国团体标准信息平台 1 目 次 1总则 ................................ ................................ ................................ ................................ ............................ 1 2 术语与符号 ................................ ................................ ................................ ................................ ............... 2 2.1 术语 ................................ ................................ ................................ ................................ ................ 2 2.2 符号 ................................ ................................ ................................ ................................ ................ 4 3 材料 ................................ ................................ ................................ ................................ ........................... 5 3.1 一般规定 ................................ ................................ ................................ ................................ ........ 5 3.2 PE -RT II型管材及管件 ................................ ................................ ................................ .................. 6 3.3 PE -RT II型预制保温管 ................................ ................................ ................................ ................ 14 3.4管道标识、运输和储存 ................................ ................................ ................................ ............... 17 4 设计 ................................ ................................ ................................ ................................ ......................... 18 4.1 一般规定 ................................ ................................ ................................ ................................ ......18 4.2 水力计算 ................................ ................................ ................................ ................................ ......18 4.3管网的布置与敷设 ................................ ................................ ................................ ....................... 19 4.4 管道阀门及附件 ................................ ................................ ................................ .......................... 21 4.5 保温 ................................ ................................ ................................ ................................ .............. 22 5 管道安装与施工 ................................ ................................ ................................ ................................ .....23 5.1 一般规定 ................................ ................................ ................................ ................................ ......23 5.2 沟槽开挖 ................................ ................................ ................................ ................................ ......23 5.3 热熔对接连接 ................................ ................................ ................................ .............................. 24 5.4 电熔连接 ................................ ................................ ................................ ................................ ......28 5.5 热熔承插连接 ................................ ................................ ................................ .............................. 29 5.6 机械连接 ................................ ................................ ................................ ................................ ......30 5.7 接头保温 ................................ ................................ ................................ ................................ ......31 5.8 管道敷设 ................................ ................................ ................................ ................................ ......31 5.9 沟槽回填 ................................ ................................ ................................ ................................ ......31 6 试验、