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Class 350 Flanges

Slip On

Weld Neck Flanges

Blind

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)

INDUSTRY STANDARD CLASS 350

ThicknessBoreLTH
Nom SizeODWeld NeckSlip-OnBlindOD of RFDia at BaseWeld NeckSlip-OnWeld NeckSlip-OnDia Bevel
OTTRXBBLLA
2632.752.52.52.7529.527.88flanges, 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 flanges26.2554.5flanges, 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
2834.752.52.52.8831 .5029.8828.2554.5
30372.632.63333.7532.1330.255.254.75
32392.752.753.2535.7534.1332.255.55
34412.882.883.3837.7536.1334.255.755.13
3643.753.133.133.6340.2538.536.256.135.63
3845.753.133.133.7542.2540.538.256.135.63
4047.753.253.25444.2542.540.256.255.88
42503.53.54.1346.544.7542.256.56.13
4452.753.753.754.3848.8846.7544.256.756.75
4654.754.254.254.7550.8848.7546.257.257.25
4856.754.254.254.7552.8850.7548.257.257.25
5261.54.2557.255552.257.5
5463.54.54.7559.255754.257.758.25
6069.54.5565.256360.2588.5
6677472.387066.258.5
7283478.387672.259

Dimensions are in inches. Weights are in pounds.

DrillingWeight
Nom SizeBolt CircleBolt LengthHole Dia# of HolesWeld NeckSlip OnBlind
2630.6381.1328245225580
2832.638.251.1328260250750
3034.888.51.1332305295890
3236.888.751.13363403251050
3438.8891.13403753551225
3641.59.751.25404804651500
3843.5101.25405104901700
4045.510.251.25445405301975
4247.7510.751.25486406202225
4450.2511.51.38447607602625
4652.2512.251.38488808802950
4854.2512.251.38489209203300
5258.751.5521075
5460.751.55212001150
6066.751.56013251450
66741.63601675
72801.63721850

Dimensions are in inches. Weights are in pounds.

Note:
Sizes are nominal inside diameters of pipe or shell used with Welding Neck flanges, and nominal OD of pipe or shell used with Slip-On flanges. Larger sizes as well as intermediate sizes can be furnished.

* Bolt Length figured on Slip-On/Blind bolting combination. Other combinations may affect bolt lengths.

Bolt lengths are calculated based on bolting on slip-on to one blind. Any other bolting combination will cause variance in bolt length.

Bolt hole diameter 1/8in. larger than bolt diameter

Class 350 Flange PDF (for printing).