Flanges are devices that aid in the connection of various components like pumps, valves, pipes, etc in a piping system. The use of flanges makes it easier for a worker to clean, inspect or modify a piping system. A Weldo / Nipo Flange consists of a combination of three parts - a weld neck flange along with a nipolet and a weldolet.
In any given industry, this device is used as a type of branch connection angled at 90°, similar to both a weldolet or a nipolet. The design of a weldoflange is different on both ends. For instance, one side has a flange connection, and the run pipe side of the Stainless Steel Weldoflange is similar to a weldolet, forming a 90° brach connection. And so the branch connection is joint via welding on the run pipe side of the piping system. Similar to a weldoflange, the branch connection is welded on the side with the run pipe, whereas the opposite side of the Nipo Flange will have a flange connection. Since both these connections have welded joints, the steel used in their construction needs to be resistant to corrosion. One of the issues with welded connections is that they tend to be vulnerable to intergranular corrosion in the zone affected by high temperatures. And such devices form unstable connections in piping systems. Hence, materials such as various low carbon stainless steel are often considered for their construction. Not only are they resistant to intergranular corrosion, but a stainless steel ANSI 150 Nipoflange exhibits resistance to several other forms of corrosion. Though this property is dependent on the alloy selected and the environment of the application. For applications that require no corrosion resistance properties with moderate to very high toughness, Carbon Steel Weldo Flange is the best and the most economical option available. Carbon steels have only iron and carbon in their alloy, which makes the ASME b16.47 Nipo Flange a commercially cheaper and viable option.
| Size Chart | 1/2 inch (15 Nominal Bore ) to 48 inch (1200 Nominal Bore) DN 10 ~DN 5000 |
|---|---|
| Pressure Rating ANSI | Class 150, 300, 600, 900, 1500, 2500 LBS |
| Pressure Calculation in DIN | 6, 10, 16, 25, 40 Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| DIN Standards | 5, 10, 16 20, 30, 40, 63 K |
| UNI Standards | 6, 10, 16, 25, 40 Bar |
| EN Standards | 6, 10, 16, 25, 40 Bar |
| Coating | Yellow Transparent, Oil Black Paint, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized |
| Production technique | Heat treated, Forged and machined |
| Test | UI trasonic flaw detector, Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, Magnetic particle detector |
| Equipment | electric bevelling machine, Press machine, Bending machine, Pushing Machine, Sand-blasting machine etc |
| Flanges Face Type | Flat Face, Lap-Joint Face, Raised Face, Ring Type Joint, Small Tongue, Large Male-Female, Small Male-Female, Large Tongue & Groove Flanges manufacturer and Supplier |
| Flanges Marking | All Flanges are marked as follows: Supplier or Manufacturer’s Name, Size, Class, Bore, Dimension, Material, Heat No. Or according to the customer’s request. |
Nickel Alloy Steel Flanges NO6625 Alloy 625 6 inch x 3 inch Class 150 SCH40 RF Nipo Flange
Stainless Steel Flange A182 F316 OD 4 inch Class 300 Nipo Flange
ASME B16.5 flange inconel 825 DN65 cl300 Nipo RF flange
Alloy 625 6 inch x 2 inch 150# STD RF N06625 Nickel Alloy Steel Flanges Nipo Flange Weldoflange
Inconel 718 3 inch x 1. 1/2 inch XS 150# Nickel Alloy Steel Nipo Flange nipo flange
Stainless Steel Flanges 904L Nipo Flange
| Size | Size in mm | Height A | Outer diameter -B | Hole diameter C | Weight in KG |
|---|---|---|---|---|---|
| 1/4 | 8 | 14.3 | 25.4 | 15.9 | 0.04 |
| 1/2 | 15 | 19.05 | 34.93 | 23.81 | 0.08 |
| 3/4 | 20 | 22.23 | 44.45 | 30.16 | 0.11 |
| 1 | 25 | 26.99 | 53.98 | 36.51 | 0.23 |
| 3/8 | 10 | 19.05 | 31.75 | 19.05 | 0.07 |
| 1 1/4 | 32 | 31.75 | 65.09 | 44.45 | 0.36 |
| 1 1/2 | 40 | 33.34 | 73.03 | 50.8 | 0.45 |
| 2 | 50 | 38.1 | 88.9 | 65.09 | 0.79 |
| 3 | 80 | 44.45 | 122.24 | 93.66 | 1.81 |
| 3 1/2 | 90 | 47.63 | 142.88 | 112.71 | 2.5 |
| 4 | 100 | 50.8 | 152.4 | 120.65 | 2.86 |
| 5 | 130 | 57.15 | 179.3 | 141.29 | 4.65 |
| 6 | 150 | 60.33 | 215.9 | 169.86 | 6.44 |
| 8 | 200 | 69.85 | 263.53 | 220.66 | 10.66 |
| 2 1/2 | 65 | 41.28 | 103.19 | 76.2 | 1.13 |
| 10 | 250 | 77.79 | 322.26 | 274.64 | 17.69 |
| 12 | 300 | 85.73 | 377.83 | 325.44 | 26.76 |
| 14 | 350 | 88.9 | 409.58 | 357.19 | 29.94 |
| 16 | 400 | 93.6 | 463.55 | 407.99 | 34.02 |
| 18 | 450 | 96.84 | 520.7 | 458.79 | 44 |
| 24 | 600 | 144.5 | 717.5 | 609.6 | 101 |
| 26 | 650 | 155.6 | 778 | 660.4 | 120 |
| 30 | 750 | 174.6 | 893.6 | 762 | 190 |
| 36 | 900 | 206.4 | 1070 | 914.4 | 310 |
| 40 | 1000 | 225.4 | 1187.6 | 1016 | 435 |
| 42 | 1050 | 235 | 1244.6 | 1066.8 | 540 |
| 20 | 500 | 101.6 | 571.5 | 508 | 53.52 |
| 48 | 1200 | 241.3 | 1404 | 1219.2 | 750 |
| Schedule XS | |||||
| Size | Size in mm | Height – A | OD – B | Hole Dia – C | Weight in KG |
| 1/4 | 8 | N/A | 25.4 | 15.88 | 0.05 |
| 3/8 | 10 | N/A | 31.75 | 19.05 | 0.07 |
| 1/2 | 15 | 19.05 | 34.93 | 23.81 | 0.09 |
| 1 | 25 | 26.99 | 53.98 | 36.51 | 0.21 |
| 1 1/4 | 32 | 31.75 | 65.09 | 44.45 | 0.41 |
| 1 1/2 | 40 | 33.34 | 73.03 | 50.8 | 0.5 |
| 2 | 50 | 38.1 | 88.9 | 65.09 | 0.79 |
| 2 1/2 | 65 | 41.28 | 103.19 | 76.2 | 1.18 |
| 3 | 80 | 44.45 | 122.24 | 93.66 | 1.86 |
| 3/4 | 20 | 22.23 | 44.45 | 30.16 | 0.14 |
| 3 1/2 | 90 | 47.63 | 136.53 | 112.71 | 2.54 |
| 4 | 100 | 50.8 | 152.4 | 120.65 | 2.9 |
| 6 | 150 | 77.79 | 225.43 | 169.86 | 10.43 |
| 8 | 200 | 98.43 | 292.1 | 220.66 | 16.78 |
| 10 | 250 | 93.66 | 323.85 | 265.11 | 20.87 |
| 14 | 350 | 100.01 | 431.8 | 350.84 | 31.75 |
| 16 | 400 | 106.36 | 466.73 | 403.23 | 46.27 |
| 18 | 450 | 111.13 | 523.88 | 455.61 | 58.97 |
| 20 | 500 | 119.06 | 582.61 | 509.59 | 71.67 |
| 24 | 600 | 152.4 | 722.2 | 609.6 | 142 |
| 26 | 650 | 165.1 | 782.6 | 660.4 | 168 |
| 30 | 750 | 181 | 896.8 | 762 | 218 |
| 12 | 300 | 103.1 | 379.41 | 317.5 | 27.67 |
| 48 | 1200 | 273 | 1425.6 | 1219.2 | 910 |
| 36 | 900 | 212.7 | 1074.4 | 914.4 | 404 |
| 40 | 1000 | 235 | 1194 | 1016 | 582 |
| 42 | 1050 | 244.5 | 1250.8 | 1066.8 | 590 |
| Schedule XXS | |||||
| Size | Size in mm | Height – A | OD – B | Hole Dia – C | Weight in KG |
| 1/2 | 15 | 28.58 | 34.93 | 14.29 | 0.11 |
| 3/4 | 20 | 31.75 | 44.45 | 19.05 | 0.32 |
| 1 | 25 | 38.1 | 50.8 | 25.4 | 0.38 |
| 1 1/4 | 32 | 44.45 | 61.91 | 33.34 | 0.57 |
| 1 1/2 | 40 | 50.8 | 69.85 | 38.1 | 0.79 |
| 2 | 50 | 55.56 | 80.96 | 42.86 | 0.97 |
| 2 1/2 | 65 | 61.91 | 96.84 | 53.98 | 1.53 |
| 3 | 80 | 73.03 | 120.65 | 73.03 | 2.87 |
| 4 | 100 | 84.14 | 152.4 | 98.43 | 4.76 |
| 5 | 130 | 93.66 | 187.33 | 122.24 | 6.46 |
| 6 | 150 | 104.78 | 220.66 | 146.05 | 12.7 |
| 8 | 200 | 111.12 | 284.16 | 173.04 | 20.41 |
| 10 | 250 | 125.41 | 312.74 | 215.9 | 38.56 |
| Schedule 160 | |||||
| Size | Size in mm | Height – A | OD – B | Hole Dia – C | Weight in KG |
| 1/2 | 15 | 28.58 | 34.93 | 14.29 | 0.11 |
| 3/4 | 20 | 31.75 | 44.45 | 19.05 | 0.32 |
| 1 | 25 | 38.1 | 50.8 | 25.4 | 0.38 |
| 1 1/4 | 32 | 44.45 | 61.91 | 33.34 | 0.57 |
| 1 1/2 | 40 | 50.8 | 69.85 | 38.1 | 0.79 |
| 2 | 50 | 55.56 | 80.96 | 42.86 | 0.97 |
| 2 1/2 | 65 | 61.91 | 96.84 | 53.98 | 1.53 |
| 3 | 80 | 73.03 | 120.65 | 73.03 | 2.87 |
| 4 | 100 | 84.14 | 152.4 | 98.43 | 4.76 |
| 5 | 130 | 93.66 | 187.33 | 122.24 | 6.46 |
| 6 | 150 | 104.78 | 220.66 | 146.05 | 12.7 |
| 8 | 200 | 111.12 | 284.16 | 173.04 | 20.41 |
| 10 | 250 | 125.41 | 312.74 | 215.9 | 38.56 |