BS 3293 Class 150 SO

Pipe flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification.

The Slip-on flange has a low hub because the pipe slips into the flange prior to welding. It is welded both inside and out to provide sufficient strength and prevent leakage.Slip-on flanges are all bored slightly larger than the O.D. of the pipe.

Nominal
pipe size		Outside
diameter of
flange, O		Outside
diameter,
R		Thickness of
flange min., C		Outside
diameter of
large end of hub, X		Length through hub, YFillet radiusFlange bore, BDiameter of
bolt circle, D		Diameter of
bolt holes		Number of
bolt holes		Approxi-mate Weight kgs
26869.95742.9550.80723.9085.736.35666.75806.4534.9324104.09
28927.10793.7552.39781.0587.316.35717.55863.6034.9328118.94
30984.25857.2553.98831.8588.906.35768.35914.4034.9328134.56
321060.45908.0557.15889.0092.087.94819.15977.9041.2828166.33
341111.25958.8558.74939.8093.667.94869.951028.7041.2832178.16
361168.401022.3560.33996.9595.257.94920.751085.8541.2832201.15
381238.251073.1560.331060.4595.259.53971.551149.3541.2832234.77
401289.051123.9563.501111.2598.439.531022.351200.1541.2836255.04
421346.201193.8066.681168.40101.609.531073.151257.3041.2836289.32
441403.351244.6066.681219.20101.6011.111123.951314.4541.2840307.07
461454.151295.4068.261270.00103.1911.111174.751365.2541.2840327.20
481511.301358.9069.851327.15104.7811.111225.551422.4041.2844357.05
Note: 7 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.

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