Reducing flanges are a specialty flange that are most often used on projects that require the fitting together of different sized pipes.
Reducing Flanges are suitable for changing line size, but should not be used if abrupt transition would create undesirable turbulence, as at pump connections. A reducing flange consists of a flange with one specified diameter having a bore of a different and smaller, diameter.Except for the bore and hub dimensions, the flange will have dimensions of the larger pipe size.

Reducing Weld Neck Flange-Haihao Group
There are several types of reducing flanges including weld-neck reducing flanges, slip-on reducing flanges and threaded reducing flanges and so on. The number one feature of reducing flanges, is that they are a highly economical way to make transitions between pipes of different sizes.
Reducing Flange |
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Size | 1/2″-36″ |
Pressure | ANSI 150LBS-2500LBS,
DIN PN10-PN40, JIS 5K-30K |
Type | Slip On Flange, Weld Neck Flange, Blind Flange,Threaded Flange,Socket Welding Flange, Flat Flange |
Standard | ANSI,DIN,JIS,BS,GB etc |
Flange sealing surface | FF, RF, MFM, TG, RJ |
Material | Carbon Steel: ASTM A105,20#, Q235, 16Mn, ASTM A350 , ASTM A694 F42-F70;
Stainless Steel: ASTM A182 F304, 304L, F316, 316L; Alloy Steel: ASTM A182 F1,F5, F9, F11, F12, F22,F91, A182F12, A182F11, A335P22 |
Package | In wooded cases or pallets, or as for clients’ requirements |
Hebei Haihao group can manufacture Plate Flange(PL Flange), Weld Neck Flange(WN Flange), Socket Weld Flange, Slip On Flange(SO Flange), Blind Flange, Lap Jiont Falnge(Loose Flange), Threaded Flange , Figure 8 Flange, Integral Flange etc.We supplys a variety of pipe flanges to satisfy our customers’ specifica requirements,which include different size,different schedule,different pressure and different finish faces. Our products are produced strictly according to the required standard. Our raw material for flanges all are purchased from big steel companies which can make sure the material in a high quality.
We sincerely welcome customers domestic and abroad to visit us for cooperation and development.
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