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《埋地钢质管道聚乙烯防腐层》(GB/T23257-2017)【全文附高清无水印PDF+可编辑Word版下载】英文标准名称:Polyethylene coating for buried steel pipeline简介:本标准规定了钢质管道挤压聚乙烯防腐层及辐射交联聚乙烯热收缩带(套)补口的最低技术要求。本标准适用于埋

Posted at 2025-12-9 by Admin

《Polyethylene coating for buried steel pipeline(埋地钢质管道聚乙烯防腐层)》(GB/T23257-2017)【英文版】【全文附高清无水印PDF+可编辑Word版下载】简介:This standard specifies the minimum technical requ

Posted at 2025-12-9 by Admin

《工矿用地复垦区宜能非粮地划分检验标准》(NB/T34052-2017)【全文附高清无水印PDF+可编辑Word版下载】英文标准名称:Standard for the division of non-food land for energy production in the reclamation area of i

Posted at 2025-11-27 by Admin

《自动喷水灭火系统施工及验收规范》(GB50261-2017)【全文附高清无水印PDF+可编辑Word版下载】英文名称:Code for installation and commissioning of sprinkler systems标准简介:为保障自动喷水灭火系统(简称系统)的施工质量和使用功能,减少火灾危害,

Posted at 2025-11-24 by Admin

《国家基本比例尺地图图式第4部分:1:250000 1:500000 1:1 000000地形图图式》(GB/T20257.4-2017)【全文附高清无水印PDF版下载】英文标准名称:Cartographic symbols for national fundamental scale maps—Part4:Speci

Posted at 2025-11-9 by Admin

《国家基本比例尺地图图式第3部分:1:25000 1:50000 1:100000地形图图式》(GB/T20257.3-2017)【全文附高清无水印PDF版下载】英文标准名称:Cartographic symbols for national fundamental scale maps-Part 3:Specific

Posted at 2025-11-9 by Admin
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