| Standard: | ANSI, DIN, GB, JIS |
|---|---|
| Type: | Back-up Flange |
| Material: | Carbon Steel |
| Structure: | Round |
| Connection: | Welding |
| Sealing Surface: | RF |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier ASME B16.5 EN1092-1 Hot DIP Galvanized Steel Back up Flange
Back up Flanges are widely used in special circumstances with their main advantage being that they can be attached to the pipe without welding.
We are specializing in manufacturing and exportation of steel Back up Flanges.
We can supply stainless steel, carbon steel and nickel alloy Back up Flanges.
Back up Flanges, steel Back up Flanges are available with following specifications:
Specification Standard: ASME B16.5, EN1092-1,DIN2633,JIS B2220,ETC
Material Standard: ASTM A 105, ASTM A 181
Surface treatment: Hot dipped galvanizing or Electronic-Galvanizing
Back up Flanges Size : 1/8" NB TO 48"NB.
Back up Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
| Nominal Pipe Size |
Outside Diameter (OD) |
Inside Diameter (ID) |
Thickness (T) |
Bolt Circle (BC) |
Hole Diameter |
No. of Bolt Holes |
45 Degree Bevel (B) |
Approx. Weight (lbs) |
| Drilling Pattern - 150# | ||||||||
| 2 | 6.00 | 2.46 | 0.500 | 4.75 | 0.750 | 4 | 0.250 | 2.9 |
| 2 1/2 | 7.00 | 3.00 | 0.500 | 5.50 | 0.750 | 4 | 0.250 | 4.2 |
| 3 | 7.50 | 3.60 | 0.500 | 6.00 | 0.750 | 4 | 0.250 | 4.4 |
| 4 | 9.00 | 4.60 | 0.500 | 7.50 | 0.750 | 8 | 0.250 | 5.6 |
| 5 | 10.00 | 5.69 | 0.500 | 8.50 | 0.875 | 8 | 0.250 | 6.9 |
| 6 | 11.00 | 6.75 | 0.625 | 9.50 | 0.875 | 8 | 0.250 | 9.1 |
| 8 | 13.50 | 8.75 | 0.625 | 11.75 | 0.875 | 8 | 0.312 | 12.9 |
| 10 | 16.00 | 10.95 | 0.625 | 14.25 | 1.000 | 12 | 0.312 | 16.2 |
| 12 | 19.00 | 12.95 | 0.750 | 17.00 | 1.000 | 12 | 0.312 | 29.3 |
| 14 | 21.00 | 14.20 | 0.750 | 18.75 | 1.125 | 12 | 0.312 | 36.2 |
| 16 | 23.50 | 16.20 | 0.750 | 21.25 | 1.125 | 16 | 0.375 | 42.0 |
| 18 | 25.00 | 18.20 | 0.750 | 22.75 | 1.250 | 16 | 0.375 | 42.3 |
| 20 | 27.50 | 20.25 | 0.750 | 25.00 | 1.250 | 20 | 0.375 | 49.7 |
| 22 | 29.50 | 22.25 | 1.000 | 27.25 | 1.375 | 20 | 0.375 | 73.7 |
| 24 | 32.00 | 24.25 | 1.000 | 29.50 | 1.375 | 20 | 0.375 | 86.4 |
| 26 | 34.25 | 26.25 | 1.000 | 31.75 | 1.375 | 24 | 0.375 | 97.5 |
| 30 | 38.75 | 30.38 | 1.000 | 36.00 | 1.375 | 28 | 0.375 | 113.1 |
| 32 | 41.75 | 32.38 | 1.125 | 38.50 | 1.625 | 28 | 0.375 | 153.4 |
| 36 | 46.00 | 36.38 | 1.125 | 42.75 | 1.625 | 32 | 0.375 | 175.5 |
Suppliers with verified business licenses
Audited Supplier 
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