薄壁不锈钢管锥螺纹施工工艺

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1、圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管广东立丰管道科技有限公司GUANGDONGLIFENGTUBINGTECHNOLOGYCO.,LTD.NR圆锥管螺纹接口（锥螺纹式）薄壁不锈钢水管NRThin-WallStainlessSteelWaterPipesForConicalTubeSourceNipple..........设计安装施工手册Thedesigninstallstheconstructionmanual时间见证品质创新赢得未来圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管目录1总则····························

2、······················12术语··················································23适用范围与特点·······································34设计指南4.1管道布置和敷设·······································44.2管道补偿、保温·······································54.3水力计算····································

3、·········65施工5.1施工准备·············································85.2一般规定·············································85.3管道敷设·············································105.4管道连接·············································116验收···········································

4、······12〖设计安装施工手册〗版本0611.1目录圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管广东立丰管道科技有限公司1、总则1.1为保证锥螺纹式薄壁不锈钢管设计、施工及验收做到技术先进、安装正确、使用安全可靠，特别制订本手册，供设计、施工单位参考。1.2本施工手册适用于新建、改建和扩建的工业与民用建筑给水（冷水、热水、饮用净水）NR圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管道工程的设计、施工及验收。1.3本手册是保证NR圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管子与管子或管件的连接接口的强度达到钢管的许用强度（即接口的耐压试验的压力=P2Rt/D

5、式中：P—试验压力，MPa；R—应力，取屈服点的50%，MPa；t—钢管壁厚，mm；D—钢管外径，mm；接口抗拉拔的最小抗拉阻力Q=D·∏·t·p式中Q—最小抗拉阻力KN；t—钢管壁厚，mm；P—应力，取屈服点，MPa）的施工安装守则。1.4NR圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管的管道设计、施工及验收，除参考本施工手册外，尚应符合现行国家有关标准的规定。〖设计安装施工手册〗版本0611.1第1页，共12页圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管广东立丰管道科技有限公司2、术语2.1薄壁不锈钢啮入成型（NR）圆锥管螺纹接口（锥螺纹式）连接指

6、采用啮入成型（NR）螺纹技术，令薄壁管子和管件的两端分别具有能相互直接旋合接驳的外内螺纹接口的一种以螺纹压力密封的连接形式。2.2覆塑锥螺纹式薄壁不锈钢水管是指外壁有塑料包覆层的锥螺纹式薄壁不锈钢水管2.3圆锥管螺纹(锥螺纹式)连接接口指管子与管子或管件的圆锥管内外螺纹接口相互接驳的连接接口。2.4圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管、管件指端口都具有采用啮入成型的圆锥管螺纹接口的薄壁管子、管件。其接口螺纹的特征是：内外螺纹接口均具1：16的圆锥度、螺纹的牙形角为60°、螺纹的牙顶和螺纹槽底都具同径并相切的圆弧。管子、管件的特点是：螺纹接

7、口的结构厚度大于管体管壁的厚度。〖设计安装施工手册〗版本0611.1第2页，共12页圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管广东立丰管道科技有限公司3、适用范围特点3.1适用范围：本施工手册适用于输送饮用净水,生活饮用水,冷水,热水,海水,燃气,医用气体等NR圆锥管螺纹接口（锥螺纹式）薄壁不锈钢管道系统，工作压力不大于1.6MPa，输送介质温度不大于130℃。3.2产品特点：水阻小、耐腐蚀、保温性好、导热系数低，重量轻，施工方便，密封可靠，连接接口强度达到管子试验的强度等级，抗振性能好，适合明装和埋敷安装。3.3管材、管件的选材可根据其用途按

8、表3.2的规定执行：表3.2管材和管件的材料及用途水管氯离子最高浓度牌号适用条件冷水热水0Cr18Ni9(304)应用净水，生活饮用水、空气、医用气体、20050冷水、热水等管道