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Pipe Spools

Pipe Spool Dimensions
NPS 18 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

140.0   686.0  
spool NPS 18 150
829.0


Flange Class 300

159.0   686.0  
spool NPS 18 300
848.0


Flange Class 600

190.0   686.0  
spool NPS 18 600
879.0

RELATED ARTICLE

What are Welding Procedures?

Flange Class 900

235.0   686.0  
spool NPS 18 900
924.0


Flange Class 1500

333.0   686.0  
spool NPS 18 1500
1022.0


Flange Class 2500

...   ...  
spool NPS 18 2500
...


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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