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.