Selection of flanges in pipeline-European system

What to consider when selecting pipe flanges?

You need to make a selection based on your individual purpose and requirement.Read this article to know some important facts about pipe flanges,so that you can take an informed decision when selecting them in European system. 

The occasions for plate flange(PL flange) applicable:

Plate flange applicable occasions according to European system

Plate flange applicable occasions according to European system

Plate flanges often used in the pipeline pressure is below PN16,and the transmission medium is water,air,and low-pressure steam with a pressure less than or equal to 0.3 MPa.Most of the PL flange sealing surface selection is raised face(RF).

The occasions for slip on flange(SO flange) applicable:

Slip on flange applicable occasions according to European system

Slip on flange applicable occasions according to European system

Slip on(SO) flanges are suitable for applications: vacuum pipeline,process medium pipeline,steam pipeline.

Common the pressure is PN16,PN10 in the vacuum line,in the process medium and steam pipeline,the pressure is usually between PN25-PN10. Most of slip on flanges’ sealing surface selection is raised face(RF).

The occasions for weld neck flange(WN flange) applicable:

Weld neck flange applicable occasions according to European system

Weld neck flange applicable occasions according to European system

The most commonly used is WN flanges in medium and high pressure pipeline.Its applicable occasions include: process media,steam, flammable,explosive,moderately hazardous toxic media,extreme and highly hazardous highly toxic media etc.Commonly used sealing surfaces are: RF MF FMF TF GF RJ.The common pressure is between PN10~PN160.

Haihao Group can produce the flanges in European standards,American standards etc,and also stocks a wide range of flanges in various materials,sizes and specifications.For more infromation,please contact us feel free,Email:sales@haihaogroup.com

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