Creates a new instance of Structural Section Pipe. 
   Namespace:   Autodesk.Revit.DB.Structure.StructuralSections  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0) 
  Since:  2018 
Syntax
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Parameters
- diameter
-  Type:  System Double  
 Pipe Diameter.
- wallNominalThickness
-  Type:  System Double  
 Represents wall nominal thickness of rectangle.
- wallDesignThickness
-  Type:  System Double  
 Represents wall design thickness of rectangle.
- centroidHorizontal
-  Type:  System Double  
 Distance from centroid to the left extremites along horizontal axis.
- centroidVertical
-  Type:  System Double  
 Distance from centroid to the upper extremites along vertical axis.
- analysisParams
-  Type:  Autodesk.Revit.DB.Structure.StructuralSections StructuralSectionAnalysisParams  
 Common set of parameters for structural analysis.