Carbon Steel Reducing Flanges Reducing flanges, also known as reducer flanges, are a specialized type of flange designed to connect pipes or fittings of different sizes within a piping system. They are used to transition between two different pipe sizes, allowing for a smooth and gradual change in diameter rather than an abrupt transition, which can cause turbulence and inefficiency in the flow.
Reducing flanges are used when there is a need to join pipes or equipment that have different diameters. They facilitate a reduction in pipe size while maintaining a sealed connection between pipes or fittings.
| Size | ½" (15 NB) to 48" (1200NB) |
| Class | 150#, 300#,400 #,600#,900#, 1500# & 2500 #. |
| Standards | ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 |
| DIN | DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 |
| B.S | BS4504 , BS4504, BS1560, BS10 |
| Stainless Steel Reducing Face Flanges |
| ASTM A 182, A 240, F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L. |
| Carbon Steel Reducing Face Flanges |
| ASTM A 105, ASTM A 181 |
| Nickel Alloy Steel Reducing Face Flanges |
| ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020). |
| Copper Alloy Reducing Face Flanges |
| Copper, Brass & Gunmetal |
| Nominal Size | Type | Ø A | D | Liner Thickness |
|
| DN1 | DN2 | ||||
| In. | In. | mm | mm | mm | |
| 3/4" | 1/2" | 1 | 98.5 | 30 | 5.0 |
| 1" | 1/2" | 1 | 108 | 30 | 5.0 |
| 1" | 3/4" | 1 | 108 | 30 | 5.0 |
| 1.1/2" | 1/2" | 1 | 127 | 30 | 5.0 |
| 1.1/2" | 3/4" | 1 | 127 | 30 | 5.0 |
| 1.1/2" | 1" | 1 | 127 | 30 | 5.0 |
| 2" | 1/2" | 3 | 152 | 30 | 5.0 |
| 2" | 3/4" | 2 | 152 | 30 | 5.0 |
| 2" | 1" | 2 | 152 | 30 | 5.0 |
| 2" | 1.1/2" | 1 | 152 | 30 | 5.0 |
| 3" | 3/4" | 3 | 190.5 | 35 | 5.0 |
| 3" | 1" | 3 | 190.5 | 35 | 5.0 |
| 3" | 1.1/2" | 2 | 190.5 | 35 | 5.0 |
| 3" | 2" | 1 | 190.5 | 35 | 5.0 |
| 4" | 3/4" | 3 | 228.6 | 35 | 5.0 |
| 4" | 1" | 3 | 228.6 | 35 | 5.0 |
| 4" | 1.1/2" | 3 | 228.6 | 35 | 5.0 |
| 4" | 2" | 3 | 228.6 | 35 | 5.0 |
| 4" | 3" | 2 | 228.6 | 35 | 5.0 |
| 6" | 3/4" | 3 | 280 | 40 | 5.0 |
| 6" | 1" | 3 | 280 | 40 | 5.0 |
| 6" | 1.1/2" | 3 | 280 | 40 | 5.0 |
| 6" | 2" | 3 | 280 | 40 | 5.0 |
| 6" | 3" | 3 | 280 | 40 | 5.0 |
| 6" | 4" | 2 | 280 | 40 | 5.0 |
| 8" | 1" | 3 | 343 | 35 | 5.0 |
| 8" | 1.1/2" | 3 | 343 | 35 | 5.0 |
| 8" | 2" | 3 | 343 | 40 | 5.0 |
| 8" | 3" | 3 | 343 | 40 | 5.0 |
| 8" | 4" | 3 | 343 | 40 | 5.0 |
| 8" | 6" | 2 | 343 | 40 | 5.0 |
| 10" | 1" | 3 | 406 | 35 | 2.5 |
| 10" | 1.1/2" | 3 | 406 | 35 | 2.5 |
| 10" | 2" | 3 | 406 | 35 | 2.5 |
| 10" | 3" | 3 | 406 | 35 | 2.5 |
| 10" | 4" | 3 | 406 | 35 | 2.5 |
| 10" | 6" | 3 | 406 | 35 | 2.5 |
| 10" | 8" | 2 | 406 | 35 | 3.5 |
| 12" | 1" | 3 | 483 | 35 | 3.5 |
| 12" | 1.1/2" | 3 | 483 | 35 | 3.5 |
| 12" | 2" | 3 | 483 | 35 | 3.5 |
| 12" | 3" | 3 | 483 | 35 | 3.5 |
| 12" | 4" | 3 | 483 | 35 | 3.5 |
| 12" | 6" | 3 | 483 | 35 | 3.5 |
| 12" | 8" | 3 | 483 | 35 | 3.5 |
| 12" | 10" | 2 | 483 | 35 | 3.5 |
| 14" | 12" | 1 | 533 | 40 | 3.5 |
| 16" | 12" | 3 | 597 | 40 | 3.5 |
| 16" | 14" | 2 | 597 | 35 | 3.5 |
| Off-Shore Oil Drilling Companies | Power Generation | Petrochemicals | Gas Processing |
| Specialty Chemicals | Pharmaceuticals | Pharmaceutical Equipment | Chemical Equipment |
| Sea Water Equipment | Heat Exchangers | Condensers | Pulp & Paper Industry |
