Section Detail of Jacketed Heat Exchangers Elbow 350 NB 1.5D

This AutoCAD drawing illustrates the sectional detail of a jacketed type double pipe heat exchanger elbow, prepared with clear dimensional accuracy for engineering reference. The drawing shows a 350 NB SCH 40 long radius elbow with 1.5D curvature, including both shell and jacket wall arrangements. Angular segmentation, such as 7.5 degrees, 15 degrees, and cumulative bend angles up to 90 degrees are clearly marked to define the elbow geometry. The section highlights shell wall thickness, jacket wall thickness, weld locations, and concentric alignment between inner and outer pipes. Dimensional callouts such as 125 mm face distance, 40 mm offsets, and wall thickness notations ensure clarity for fabrication and installation.

The drawing also includes flange and connection details such as 350 NB ANSI 150 loose flange and SORF flange in SS 316 material, along with stub end specifications. Bolt details include 12 numbers of 28.6 mm holes for M24 studs and nuts with pitch circle diameter clearly indicated. Material references such as SA 403 GR 316 and SA 312 TP 304 are noted for elbows and fabricated parts. This sectional elbow drawing is suitable for understanding jacketed piping construction, checking fabrication tolerances, and coordinating heat exchanger layouts in industrial piping systems.