NBT_47003.1-2009_钢制焊接常压容器

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1、ICS23.020.10J74中华人民共和国行业标准NB/T47003.1—2009部分代替JB/T4735—1997钢制焊接常压容器Steelweldedatmosphericpressurevessels2009-12-01发布2010-05-01实施中华人民共和国国家发展和改革委员会发布NB/T47003.1—2009目次前言·································································································································

2、······················II1范围··················································································································································12规范性引用文件··················································································································

3、·············13术语和定义······································································································································34总则··········································································································································

4、········45材料··················································································································································96基本结构元件·································································································································1

5、97立式圆筒形容器······························································································································428矩形容器·········································································································································579制造、检验与验收······

6、····················································································································74附录A（资料性附录）钢材在不同温度下的性能···········································································85INB/T47003.1—2009前言JB/T4735分为两个部分：——JB/T4735.1：钢制焊接常压容器；——JB/T4735.2：固体料仓。本部分与JB

7、/T4735—1997相比，主要变化如下：——在修订了碳素钢、低合金钢、铁素体高合金钢的安全系数，将钢材标准抗拉强度下限值的安全系数由2.5降为2.4；——对第4章的最小厚度和计算厚度的定义进行了修订；压力试验中增加气压试验；压力试验时的应力校核进行了修订；——第5章根据钢材标准的变动，相应的增加钢号；增加螺柱、螺母用钢钢号；增加型钢许用应力；增加焊接材料；——将原标准的第5章“内压圆筒”、第6章“外压圆筒与外压球壳”、第7章“封头”、第8章“