欧洲管件标准与中国管件标准对比研究

Comparative Research on European Pipe Fitting Standards and Chinese Pipe Fitting Standards

[目的]为了满足近期欧洲电站工程建设需要,亟需了解电站工程中欧洲管道及管件标准的要求。[方法]针对管件,将欧洲管件标准与国内管件标准相应条款逐一对比。[结果]经过对比,获得了欧洲管件标准与国内管件标准的差异:欧标管件在行业使用范围、管材使用范围上更全面;欧标管件的尺寸偏差、焊接端壁厚偏差、形位偏差,总体比国标要求严格;欧洲管件强度计算标准保守一些,更偏于安全;欧洲管件在管件端部坡口、通流面积、弯头弯曲半径等方面相对国标管件有其特点;另外,进入欧洲市场的管件需要遵守欧盟行政指令PED指令。[结论]通过上述标准差异,基本掌握了欧标管件标准的基本要求,可为电站工程欧标管件实际应用提供指导。

[Introduction]In order to meet the recent European power plant construction needs,it is urgent to understand the requirements of European pipelines and fittings standards in power plant engineering.[Method]Aiming at pipe fittings,this paper compared the European pipe fitting standards with the corresponding clauses of domestic pipe fitting standards.[Result]After comparison,the difference between the European standard pipe fitting standard and the domestic pipe fitting standard is obtained:the European standard pipe fittings are more comprehensive in the scope of use of the industry and the scope of material use;the dimensional tolerances,wall thickness tolerances at the welding ends and tolerance on the form of the European standard pipe fittings are more stringent than domestic standards;European pipe fittings strength calculation standards are more conservative and more safe;European pipe fittings have their own characteristics relative to national standard pipe fittings in terms of pipe end bevel,flow area,elbow bending radius,etc;in addition,pipe fittings entering the European market need to comply with the European Union’s administrative directive PED.[Conclusion]Through the above-mentioned standard differences,we have basically mastered the basic requirements of European standard pipe fittings standards,which can provide guidance for the practical application of European standard pipe fittings in power station projects.