Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Carbon and Stainless Steel Flanges - ASME/ANSI Class 900

ASME/ANSI B16.5-1996 Pipe Flanges and Flanged Fittings - Class 900 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts.

Sponsored Links

ASME/ANSI B16.5-1996 Pipe Flanges and Flanged Fittings - Class 900 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts for Weld neck, Threaded, Slip-on, Lap joint, Socket weld and Blind flanges.

Carbon and stainless steel qualities according ASME B16.5 Table 1A.

Carbon and Stainless Steel Flanges - ASME/ANSI Class 900
Pipe Size
(inches)
Flange Outside Diameter
(inches)
Pipe Outside Diameter
(inches)
Number of Bolt HolesBolt Hole Diameter
(inches) 1)
Bolt Circle
(inches)
1/2 4-3/4 0.84 4 7/8 3-1/4
3/4 5-1/8 1.05 4 7/8 3-1/2
1 5-7/8 1.32 4 1 4
1-1/4 6-1/4 1.66 4 1 4-3/8
1-1/2 7 1.90 4 1-1/8 4-7/8
2 8-1/2 2.38 8 1 6-1/2
2-1/2 9-5/8 2.88 8 1-1/8 7-1/2
3 9-1/2 3.50 8 1-1/8 7-1/2
4 11-1/2 4.50 8 1-1/4 9-1/4
5 13-3/4 5.56 8 1-3/8 11
6 15 6.63 12 1-1/4 12-1/2
8 18-1/2 8.63 12 1-1/2 15-1/2
10 21-1/2 10.75 16 1-1/2 18-1/2
12 24 12.75 20 1-1/2 21
14 25-1/4 14.00 20 1-5/8 22
16 27-3/4 16.00 20 1-3/4 24-1/4
18 31 18.00 20 2 27
20 33-3/4 20.00 20 2-1/8 29-1/2
24 41 24.00 20 2-5/8 35-1/2
ANSI B16.5 covers only sizes through 24"
26 42 3/4   20 2 7/8 37 1/2
28 46   20 3 1/8 40 1/4
30 48 1/2   20 3 1/8 42 3/4
32 51 3/4   20 3 3/8 45 1/2
34 55   20 3 5/8 48 1/4
36 57 1/2   20 3 5/8 50 3/4

1) Recommended bolts are 1/8 smaller than the nominal bolt hole diameters shown.

  • 1 inch = 25.4 mm
Sponsored Links

Related Topics

  • Piping Systems

    Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams.

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

Citation

This page can be cited as

  • The Engineering ToolBox (2003). Carbon and Stainless Steel Flanges - ASME/ANSI Class 900. [online] Available at: https://www.engineeringtoolbox.com/ansi-pipes-flanges-d_216.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































9.29.12

Sponsored Links
.