Pset_FittingBend Properties about the bend angles. IfcCableCarrierFitting/BEND IfcDuctFitting/BEND IfcPipeFitting/BEND IfcCableCarrierFitting/BEND,IfcDuctFitting/BEND,IfcPipeFitting/BEND BendAngle The change of direction of flow. Bend Angle 曲がり角度 流れの方向を変える BendRadius The radius of bending if circular arc or zero if sharp bend. Bend Radius 曲率半径 円弧の曲率半径？