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谁知道国家燃气管道安装标准是怎样的？

谁知道国家燃气管道安装标准是怎样的？

浏览：34次 | 提问时间： 07-03 04:15

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对你微笑纯粹出于礼貌ˇ 07-03 04:15

1、管道安装基本要求
(l)地下燃气管道埋设的最小覆土厚度应符合如下要求：
l)埋设在车行道下时，不得小于0．8m ；
2)埋设在非车行道下时，不得小于 0．6m ；
3)埋设在庭院内时，不得小于0．3m；
4)埋设在水田下时，不得小于0．8m。

(2)与输送腐蚀性介质的管道共架敷设时，燃气管道应架在上方。对于容易漏气、漏油、漏腐蚀性液体的部位，如法兰、阀门等，应在燃气管道上采取保护措施。

(3)煤气管道管径DN≥500mm中压管、天然气管道管径DN≥300mm的高中压干管上阀门的两侧宜设置放散管；地下液态液化石油气管道分段阀门之间应设置放散阀，其放散管管口距地面距离不应小于2m，地上液态液化石油气管道两阀门之间的管段上应设置管道安全阀。

(4)燃气管道所用钢管在安装前应作防腐处理，其中架空钢管的外壁应涂环氧铁红等防锈漆两遍，埋地钢管外壁应按设计要求做外防腐。当设计无规定时，埋地钢管外防腐可采用环氧煤沥青或聚乙烯胶粘带，埋地镀锌钢管外壁及螺纹连接部位应做普通级防腐绝缘，螺纹连接部位的修补可用水柏油涂刷并包扎玻璃布作三油二布处理，或用环氧煤沥青涂刷并包扎玻璃布作二油一布处理
(5)铸铁管的连接应采用S型机械接口，接口填料使用燃气用橡胶圈。
(6)铸铁管与钢管之间的连接，应采用法兰连接。螺栓宜采用可锻铸铁，如采用钢制螺栓，应采取防腐措施。
(7)聚乙烯燃气管道采用电熔连接或热熔连接，不得采用螺纹连接和粘接。与金属管道连接时，采用钢塑过渡接头连接。钢塑过渡接头钢管端与钢管焊接时，应采取降温措施。
(8)钢塑过渡接头一般有两种形式，对小口径聚乙烯管，一般采用一体式钢塑过渡接头；对大口径聚乙烯管，一般采用钢塑法兰组件进行转换连接。
希望我的回答对你有所帮助

五十二杯茶 07-03 04:24

燃气管道改造收费标准是：多层住宅按建筑面积29元/平方米收取预埋费，最高每户不超过3500元。排屋、别墅按建筑面积29元/平方米收取预埋费，最高每户不超过9000元。地上建筑高度等于大于20米的高层住宅按建筑面积30元/平方米收取预埋费，最高每户不超过3500元。经济适用房、廉租房等保障性新建成套住宅，按建筑面积26元/平方米收取，最高每户不超过2800元。对已投入使用但未通气的居民住宅，管道燃气经营企业可向居民用户收取管道燃气设施改造费，每套2200元。
价格来源网络，仅供参考
希望我的回答能帮到你，望采纳

独处过往 07-03 04:32

施工准备
2.1 材料要求：
2.1.1燃气输配工程使用的管子、管件、密封填料等附属材料应符合国家现行有关标
准。管子、管件及附属材料应有出厂合格证，到现场还应进行复验。
2.1.2镀锌碳素钢及管件的规格种类应符合设计要求，管壁内外镀锌均匀，无锈蚀、
无飞刺。管件无偏扣、乱扣，丝扣不全或角度不准等现象。管材及管件均应有出厂合格证。室内煤气管道安装应尽量使用镀锌碳素钢管及管件。
2.1.3碳素钢管、无缝钢管。管材不得弯曲、锈蚀，无飞刺、重皮及凹凸不平现象。
2.1.4阀门应选用现行国家标准中适用于输送燃气介质，并且具有良好密封性和耐腐
蚀性的阀门。室内一般选用旋塞或球阀。阀门的规格型号应符合设计要求的。
希望我的回答能帮到你。

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