CLASS 400 FLANGE DIMENSIONS

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Weld Neck Forged Flange Threaded Forged Flange Lap Joint Forged Flange
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Socket Weld Forged Flange Blind Forged Flange Slip On Forged Flange

 

Nom. Pipe Size O T R X #/Dia of Holesa Bolt Circle Dia B B2b B3 H L L2 L3c r C D Thr
½ 3.75 0.56 1.38 1.5 4-0.63 2.62 0.88 flanges, flange, industrial flanges, industrial flange, industrial pipe flanges, industrial fittings, industrial pipe, industrial carbon steel, industrial blind, industrial blinds, industrial, industrial waterworks, industrial stainless steel, industrial steel, industrial weld, industrial forgings, industrial orifice, industrial slip, industrial steel flange, industrial steel flanges, industrial titanium flange, industrial titanium flanges 0.9 0.84 0.88 2.06 0.88 0.12 0.93 0.38 0.62
¾ 4.62 0.62 1.69 1.88 4-0.75 3.25 1.09 1.11 1.05 1 2.25 1 0.12 1.14 0.44 0.62
1 4.88 0.69 2 2.12 4-.075 3.5 1.36 1.38 1.32 1.06 2.44 1.06 0.12 1.41 0.5 0.69
5.25 0.81 2.5 2.5 4-0.75 3.88 1.7 1.72 1.66 1.12 2.62 1.12 0.19 1.75 0.56 0.81
6.12 0.88 2.88 2.75 4-0.88 4.5 1.95 1.97 1.9 1.25 2.75 1.25 0.25 1.99 0.62 0.88
2 6.5 1 3.62 3.31 8-0.75 5 2.44 2.46 2.38 1.44 2.88 1.44 0.31 2.5 0.69 1.12
7.5 1.12 4.12 3.94 8-0.88 5.88 2.94 2.97 2.88 1.62 3.12 1.62 0.31 3 0.75 1.25
3 8.25 1.25 5 4.62 8-0.88 6.62 3.57 3.6 3.5 1.81 3.25 1.81 0.38 3.63 0.81 1.38
9 1.38 5.5 5.25 8-1.00 7.25 4.07 4.1 4 1.94 3.38 1.94 0.38 4.13 …. 1.56
4 10 1.38 6.19 5.75 8-1.00 7.88 4.57 4.6 4.5 2 3.5 2 0.44 4.63 …. 1.44
5 11 1.5 7.31 7 8-1.00 9.25 5.66 5.69 5.56 2.12 4 2.12 0.44 5.69 …. 1.69
6 12.5 1.62 8.5 8.12 12-1.00 10.62 6.72 6.75 6.63 2.25 4.06 2.25 0.5 6.75 …. 1.81
8 15 1.88 10.62 10.25 12-1.12 13 8.72 8.75 8.63 2.69 4.62 2.69 0.5 8.75 …. 2
10 17.5 2.12 12.75 12.62 16-1.25 15.25 10.88 10.92 10.75 2.88 4.88 4 0.5 10.88 …. 2.19
12 20.5 2.25 15 14.75 16-1.38 17.75 12.88 12.92 12.75 3.12 5.38 4.25 0.5 12.94 …. 2.38
14 23 2.38 16.25 16.75 20-1.38 20.25 14.14 14.18 14 3.31 5.88 4.62 0.5 14.19 …. 2.5
16 25.5 2.5 18.5 19 20-1.50 22.5 16.16 16.19 16 3.69 6 5 0.5 16.19 …. 2.69
18 28 2.62 21 21 24-1.50 24.75 18.18 18.2 18 3.88 6.5 5.38 0.5 18.19 …. 2.75
20 30.5 2.75 23 23.12 24-1.62 27 20.2 20.25 20 4 6.62 5.75 0.5 20.19 …. 2.88
22 33 2.88 25.25 25.25 24-1.75 29.25 22.22 22.25 22 4.25 6.75 6 0.5 …. ….
24 36 3 27.25 27.62 24-1.88 32 24.25 24.25 24 4.5 6.88 6.25 0.5 24.19 …. 3.25

 

Dimensions are in inches.

(a)- Bolt hole diameter 1/8 in. larger than bolt diameter.
(b)- Standard bore dimensions provided. See bore chart for other wall thicknesses.
(c)- This dimension is commonly associated with “true” lap joints. Industry standard is to make to the slip on length through the hub.

American Alloy Flange tries to offer as many tools as possible for specifying the alloy or product for your project.  If you need additional assistance, please contact one of our experienced applications specialist.

Limitation of Liability and Disclaimer of Warranty: In no event will South Coast Industrial Metals or any of its affiliates be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. South Coast Industrial Metals, Inc. assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.