Slip-on flange

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 suffcient strength and prevent leakage.Slip-on flanges are all bored slightly larger than the O.D. of the pipe. They are preferred over welding neck flanges bu many users due to their lower intial cost, but final intallation cost is probably not much less than that of the welding neck flange because of the additional welding involved.

Advantages of slip on flanges:
Low cost installation
Less time needed to spent on ensuring the accuracy of the cut pipe
They are somewhat easier to align
The slip-on flanges have low hub because the pipe slips into the flange before welding
The flange is welded both inside and outside to provide sufficient strength
They prevent leakage

Standards, Dimensions & Weight

• ASME/ANSI B16.5 Class 150 SO
• ASME/ANSI B16.5 Class 300 SO
• ASME/ANSI B16.5 Class 600 SO
• ASME/ANSI B16.5 Class 900 SO
• BS 3293 Class 150 SO
• BS 3293 Class 300 SO
• BS 3293 Class 600 SO
• DIN 86029 PN 10

Specifications:

Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250

Facing: RF / RTJ

Material:

• Cabon steel: A105, A350 LF2
• Stainless steel: A182 F304/F304L/F316/F316L/F321
• Alloy steel: F11, F12

Packing: plywood case and plywood pallet

BS 3293 Class 300 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, 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.

BS 3293 Class 300 SO

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 suffcient strength and prevent leakage. 

Slip-on flanges are all bored slightly larger than the O.D. of the pipe. They are preferred over welding neck flanges bu many users due to their lower intial cost, but final intallation cost is probably not much less than that of the welding neck flange because of the additional welding involved.

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, 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.