BS 3293 Class 300 SO

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
小的
hub, A		 Length through hub, Y Fillet radius Flange bore, B Diameter of
bolt circle, D		 Diameter of
bolt holes		 Number of
bolt holes		 Approxi-mate Weight kgs
26 971.55 749.30 79.38 1.60 720.73 687.39 184.15 6.35 666.75 876.30 44.45 28 247.29
28 1035.05 800.10 85.73 1.60 774.70 739.78 196.85 6.35 717.55 939.80 44.45 28 301.48
30 1092.20 857.25 92.08 1.60 825.50 792.16 209.55 6.35 768.35 996.95 47.63 28 348.61
32 1149.35 914.40 98.43 1.60 881.06 844.55 222.25 7.94 819.15 1054.10 50.80 28 402.88
34 1206.50 965.20 101.60 1.60 936.63 896.94 231.78 7.94 869.95 1104.90 50.80 28 455.53
36 1270.00 1022.35 104.78 1.60 990.60 949.33 241.30 7.94 920.75 1168.40 53.98 32 508.05

Note: 7 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.

Standards, Dimensions & Weight of Slip on flanges

The Slip-on flange has a low hub because the pipe slips into the flange prior to welding.

Details of Slip On flange
1. Slip On flange 2. Filled weld outside 3. Filled weld inside 4. Pipe

Flanges specification, Standard and identification

Below you will find a short description and definition of each type, completed with an detailed image.