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Pipe Spools

Pipe Spool Dimensions
NPS 1/2 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

48.0   38.0  
spool NPS 1/2 150
89.0


Flange Class 300

53.0   38.0  
spool NPS 1/2 300
94.0


Flange Class 600

58.0   38.0  
spool NPS 1/2 600
99.0

RELATED ARTICLE

What are Welding Procedures?

Flange Class 900

66.0   38.0  
spool NPS 1/2 900
107.0


Flange Class 1500

66.0   38.0  
spool NPS 1/2 1500
107.0


Flange Class 2500

79.0   38.0  
spool NPS 1/2 2500
120.0


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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