$10
Urban heating—Steel jacket prefabricated directly buried pipes and fittings with vacuum insulating layers
全国城镇供热标准化技术委员会(SAC/TC 455)
本标准规定了钢外护管真空复合保温预制直埋管及管件的术语和定义、结构、材料与性能、要求、试验方法、检验规则、标志、运输和贮存。
本标准适用于供热介质工作压力小于或等于2.5 MPa,设计温度小于或等于350 ℃的蒸汽或设计温度小于或等于200 ℃的热水钢外护管真空复合保温预制直埋管及管件(以下简称“保温管及保温管件”)。
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