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Pipe Spools

Pipe Spool Dimensions
NPS 12 ASME B16.5/B16.9

OTHER DIMENSIONS
1/2
3/4
1
2
3
4
6
8
10
12
14
16
18
20
24

Flange Class 150

115.0   457.0  
spool NPS 12 150
575.0


Flange Class 300

131.0   457.0  
spool NPS 12 300
591.0


Flange Class 600

162.0   457.0  
spool NPS 12 600
622.0

RELATED ARTICLE

What are Welding Procedures?

Flange Class 900

206.0   457.0  
spool NPS 12 900
666.0


Flange Class 1500

289.0   457.0  
spool NPS 12 1500
749.0


Flange Class 2500

470.0   457.0  
spool NPS 12 2500
930.0


Wn flanges and Elbow LR 90 deg.

Notes..
  • Each image shows two Weld Neck flanges and a 90⁃degree Long Radius Elbow.

  • Dimensions are in millimeters unless otherwise indicated.

  • The standard gap (opening) between the ends of butt welds is typically 1.5 mm to 3.0 mm, depending on the wall thickness of the material and the welding procedure specification (WPS).

  • The dimensions calculated on this page are based on a 3 mm gap.

  • Dimensions are given in millimeters and are rounded up or down; for example, 168.3 mm is rounded to 168.0, 88.9 to 89.0, and so on.

  • Detailed dimensions can be found under “Flange and Fitting Dimensions.”

  • TYP stands for “Typical” and indicates that a dimension applies to all identical, recurring locations in the drawing.


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