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BS 3293 Class 600 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
Outside diameter
of small end of
hub, A
Length through hub, YFillet radiusFlange bore, BDiameter of
bolt circle, D
Diameter of
bolt holes
Number of
bolt holes
Approxi-mate Weight kgs
261016.00749.30107.956.35747.71706.44222.2514.29666.75914.4050.8028407.19
281073.15800.10111.136.35803.28760.41234.9515.88717.55965.2053.9828459.23
301130.30857.25114.306.35862.01814.39247.6517.46768.351022.3553.9828525.11
321193.80914.40117.486.35917.58868.36260.3517.46819.151079.5060.3328590.65
341244.60965.20120.656.35973.14922.34269.8819.05869.951130.3060.3328650.91
361314.451022.35123.836.351031.88976.31282.5819.05920.751193.8066.6828742.09
Note: 7 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.