Stainless Steel Reducing Flange A reducing flange is a type of flange used in piping systems to connect pipes of different sizes. In the context of stainless steel reducing flanges, it means the flange is made of stainless steel and is designed to connect pipes with different diameters. Stainless steel is a popular material for flanges due to its corrosion resistance, durability, and strength. Reducing flanges are commonly used in piping systems where the diameter of the pipe needs to be reduced at a specific point. These flanges have a larger bore on one side and a smaller bore on the other, allowing for the transition between different pipe sizes.
| Specification | Stainless Steel Reducing Flange |
|---|---|
| Other Standard | B16.47 Series A & B/ B16.48, BS4504/ GOST |
| UNI Standard | 6 Bar/ 10 Bar/ 16 Bar/ 25 Bar/ 40 Bar |
| Supporting Material | Gasket/ Ring Joint/ Flange Bolts |
| Manufacturer Pressure Class | Class 150 (lb) up to 24" Class 300 (lb) up to 20" Class 600 (lb) up to 20" Class 900 (lb) up to 16" Class 1500 (lb) up to 10" Class 2500 (lb) up to 8" |
| Face Types | Reducing Lap Joint Flange Slip On Reducing Flange Threaded Reducing Flange Weld Neck Reducing Flange Socket Weld Reducing Flange |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged/ Heat treated and machined |
| Manufacturer of | Forged/ Threaded/ Screwed / Plate |
| Dimensions | ASME B16.47 Series A And B ASME B16.5 EN 1092-1 ASA API-605 AWWA C207 MSS SP44 EN 1092-2 |
| Flange Test | Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector |
| Flange Equipment | Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc |
| Coating | Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized |
| Application | Bitumen upgraders Heavy oil refineries. Nuclear power (mostly seamless). Petrochemicals and acids. |
| EN Standard | 6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar |
| DIN Standard | PN6/ PN10/ PN16/ PN25/ PN40/ PN64 |
| JIS Standard | 5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K |
| Size Chart | 1/2 Inch to 36 Inch, (Customized Up to 48") |
| Thickness | Sch 10S To SCH 120 |
| Stainless Steel | ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8/ CF3/ CF8M/ CF3M/ DIN 1.4301/ DIN 1.4306/ DIN 1.4401/ DIN 1.4404/ DIN 1.4308/ DIN 1.4408/ DIN 1.4306/ DIN 1.4409 |
|---|---|
| Alloy Steel | ASTM A182 / ASME SA182 F5/ F9/ F11/ F12/ F22/ F91 |
| Titanium | ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2/ Titanium Gr. 4/ Titanium Gr.
5/ Titanium Gr. 7 ASTM R50250/GR.1 | R50400/GR.2 | |
| Inconel | ASTM B564 / ASME SB564, Inconel 600/ 601/ 625/ 718/ 783/ 690/ x750 |
| Carbon Steel | ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80) |
| Hastelloy | ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276)/ C22 (UNS N06022)/ C4/ C2000/ B2/ B3/ X Flanges |
| Monel | ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400)/ Monel 500 (UNS No. N05500) |
| Copper Nickel | ASTM / ASME SB 61 / 62 / 151 / 152/ Copper Nickel 90/10 (C70600 )/ Cupro Nickel 70/30 (C71500)/ UNS C71640 |
| Alloy 20 | ASTM B462 / ASME SB462/ Carpenter® 20 Alloy/ Alloy 20Cb-3 |
| Aluminium | 5052 /6061/ 6063 / 2017 / 7075 / etc. |
| Nickel | ASTM B564 / ASME SB564, Nickel 200/ Nickel 201/ Nickel 205/ Nickel 205LC |
| Duplex | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Super Duplex | S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Incoloy | ASTM B564 / ASME SB564, Incoloy 800/ 800H/ 800HT (UNS N08800)/ 825 (UNS N08825)/ 925 Flanges |
| 254 Smo | ASTM A182 / ASME SA182, SMO 254/6Mo/ UNS S31254/ DIN 1.4547 |
| Nimonic | Nimonic 75/ Nimonic 80A/ Nimonic 90 |
| Sizes | Types | Ø (A) | (D) | Liner Wall Thickness |
|
|---|---|---|---|---|---|
| DN1 | DN2 | ||||
| Inches | Inches | - | Millimeter | Millimeter | Millimeter |
| 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 |
| Normal Pipe Size In (Inches) |
DN (Millimeter) |
Reducing Flange Weight In (KGS) |
| 1/ 2 | 15 | 0.4 |
| 3/ 4 | 20 | 0.6 |
| 1 | 25 | 0.8 |
| 1 1/ 4 | 32 | 1 |
| 1 1/ 2 | 40 | 1.3 |
| 2 | 50 | 2.1 |
| 2 1/ 2 | 65 | 3.3 |
| 3 | 80 | 3.9 |
| 3 1/ 2 | 90 | 4.8 |
| 4 | 100 | 5.3 |
| 5 | 125 | 6.1 |
| 6 | 150 | 7.5 |
| 8 | 200 | 12.1 |
| 10 | 250 | 16.5 |
| 12 | 300 | 26.2 |
| 14 | 350 | 34.6 |
| 16 | 400 | 44.8 |
| 18 | 450 | 48.9 |
| 20 | 500 | 61.9 |
| 24 | 600 | 86.9 |
| Normal Size Of Steel Pipe in Inch | NPS (Normal Pipe Size) Size in Millimeter | O.D. | Wall Thickness | Hub Outer Diameter | Weld Neck Outer Diameter | WNRF Length | WNRF Bore Daimeter | Raised Face Diameter | Height Of Raised Face | PCD | Face Of WNRF |
| (A) | (B) | (C) | (D) | (E) | (F) | (G) | (H) | (I) | (J) | ||
| 1/2 | 15 | 90 | 9.6 | 30 | 21.3 | 46 | - | 34.9 | 2 | 60.3 | 1.6 |
| 3/4 | 20 | 100 | 11.2 | 38 | 26.7 | 51 | 42.9 | 2 | 69.9 | 1.6 | |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 54 | 50.8 | 2 | 79.4 | 1.6 | |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 56 | 63.5 | 2 | 88.9 | 1.6 | |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 60 | 73 | 2 | 98.4 | 1.6 | |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 62 | 92.1 | 2 | 120.7 | 1.6 | |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 68 | 104.8 | 2 | 139.7 | 1.6 | |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 68 | 127 | 2 | 152.4 | 1.6 | |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 70 | 139.7 | 2 | 177.8 | 1.6 | |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 75 | 157.2 | 2 | 190.5 | 1.6 | |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 87 | 185.7 | 2 | 215.9 | 1.6 | |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 87 | 215.9 | 2 | 241.3 | 1.6 | |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 100 | 269.9 | 2 | 298.5 | 1.6 | |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 100 | 323.8 | 2 | 362 | 1.6 | |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 113 | 381 | 2 | 431.8 | 1.6 | |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 125 | 412.8 | 2 | 476.3 | 1.6 | |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 125 | 469.9 | 2 | 539.8 | 1.6 | |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 138 | 533.4 | 2 | 577.9 | 1.6 | |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 143 | 584.2 | 2 | 635 | 1.6 | |
| 24 | 600 | 815 | 46.1 | 663 | 610 | 151 | 692.2 | 2 | 749.3 | 1.6 |
