ipelines
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lastics
roperties;Resistance;Ribbon forms;Specification (approval);Testing;Underground;Underground conduits;Underground installations;Visual;Warning devices;Warning symbols【摘要】: This European Standard specifies the material, mechanical and functional (fitness for purpose) requirementsfor warning devices with visual characteristics manufactured from plastics, intended to indicate the presenceof cables and piping systems buried in ground when opening trenches and more generally during diggingwork.This European Standard also specifies the test methods referred to in this document.This European Standard is applicable to two types of visual warning devices: tapes (type 1) and meshes(type 2).【中国标准分类号】: A91【国际标准分类号】: 13_320;83_140_99【页数】: 20P.;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |