More Detail
Slip-On Flanges
Â
| Slip-on flanges are a type of flange used in piping systems. They are called “slip-on” because they are designed to slip over the end of a pipe. Here are some key details about them: | |
Design and Construction:
- Shape: Slip-on flanges are generally flat and have a central hole that is slightly larger than the pipe’s outer diameter.
- Material: They are often made from materials like carbon steel, stainless steel, or other alloys depending on the application and required strength.
- Attachment: They are typically welded to the pipe, both inside and outside, to ensure a secure connection.
Advantages:
- Ease of Installation: Because they slip over the pipe, they are easier to align and install compared to other types of flanges.
- Cost-Effective: Generally less expensive than other types of flanges, such as weld-neck flanges.
- Versatility: Suitable for a wide range of pipe sizes and materials.
Disadvantages:
- Lower Pressure Ratings: Slip-on flanges typically have lower pressure ratings compared to weld-neck flanges because of the way they are welded and the potential for lower strength at the flange-pipe joint.
- Alignment Issues: The flange needs to be properly aligned before welding, which can sometimes be challenging.
Applications:
- Low-Pressure Systems: They are commonly used in low to medium pressure systems.
- Non-Critical Applications: Ideal for applications where exact alignment is less critical and where the flange is not subject to extremely high pressures or temperatures.
Specifications:
Slip-on flanges adhere to various industry standards, such as:
- ANSI/ASME B16.5: For flanges and flanged fittings in piping systems.
- DIN (German Standards): For European applications.
When choosing slip-on flanges, consider the operating conditions of your piping system, including pressure, temperature, and the type of fluid being transported, to ensure compatibility and safety.
Dimensions of Class 150 Slip-On Flanges
All dimensions are in “mm” unless noted otherwise.
Dimensions of Class 150 Slip On Flanges as per ASME B16.5.
| Nominal Pipe Size | Outside diameter of flange (D) | Thick of flange (B) | Diameter of Hub at base (A) | Diameter of raised face (G) | Length thru Hub (H) | Dia of bore (ID) | No of holes | Dia of holes (L) | Dia of bolts | Diam of bolt circle (K) | Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 88.9 | 11.2 | 35.1 | 30.2 | 15.7 | 22.4 | 4 | 15.7 | 1/2 | 60.5 | 0.5 |
| 3/4 | 98.6 | 12.7 | 42.9 | 38.1 | 15.7 | 27.7 | 4 | 15.7 | 1/2 | 69.9 | 1 |
| 1 | 108 | 14.2 | 50.8 | 49.3 | 17.5 | 34.5 | 4 | 15.7 | 1/2 | 79.2 | 1 |
| 1-1/4 | 117.3 | 15.7 | 63.5 | 58.7 | 20.6 | 43.2 | 4 | 15.7 | 1/2 | 88.9 | 1 |
| 1-1/2 | 127 | 17.5 | 73.2 | 65 | 22.4 | 49.5 | 4 | 15.7 | 1/2 | 98.6 | 1 |
| 2 | 152.4 | 19.1 | 91.9 | 77.7 | 25.4 | 62 | 4 | 19.1 | 5/8 | 120.7 | 2 |
| 2-1/2 | 177.8 | 22.4 | 104.6 | 90.4 | 28.4 | 74.7 | 4 | 19.1 | 5/8 | 139.7 | 3 |
| 3 | 190.5 | 23.9 | 127 | 108 | 30.2 | 90.7 | 4 | 19.1 | 5/8 | 152.4 | 4 |
| 3-1/2 | 215.9 | 23.9 | 139.7 | 122.2 | 31.8 | 103.4 | 8 | 19.1 | 5/8 | 177.8 | 5 |
| 4 | 228.6 | 23.9 | 157.2 | 134.9 | 33.3 | 116.1 | 8 | 19.1 | 5/8 | 190.5 | 6 |
| 5 | 254 | 23.9 | 185.7 | 163.6 | 36.6 | 143.8 | 8 | 22.4 | 3/4 | 215.9 | 7 |
| 6 | 279.4 | 25.4 | 215.9 | 192 | 39.6 | 170.7 | 8 | 22.4 | 3/4 | 241.3 | 9 |
| 8 | 342.9 | 28.4 | 269.7 | 246.1 | 44.5 | 221.5 | 8 | 22.4 | 3/4 | 298.5 | 14 |
| 10 | 406.4 | 30.2 | 323.9 | 304.8 | 49.3 | 276.4 | 12 | 25.4 | 7/8 | 362 | 20 |
| 12 | 482.6 | 31.8 | 381 | 365.3 | 55.6 | 327.2 | 12 | 25.4 | 7/8 | 431.8 | 29 |
| 14 | 533.4 | 35.1 | 412.8 | 400.1 | 57.2 | 359.2 | 12 | 28.4 | 1 | 476.3 | 41 |
| 16 | 596.9 | 36.6 | 469.9 | 457.2 | 63.5 | 410.5 | 16 | 28.4 | 1 | 539.8 | 44 |
| 18 | 635 | 39.6 | 533.4 | 505 | 68.3 | 461.8 | 16 | 31.8 | 1-1/8 | 577.9 | 59 |
| 20 | 698.5 | 42.9 | 584.2 | 558.8 | 73.2 | 513.1 | 20 | 31.8 | 1-1/8 | 635 | 75 |
| 24 | 812.8 | 47.8 | 692.2 | 663.4 | 82.6 | 616 | 20 | 35.1 | 1-1/4 | 749.3 | 100 |
Dimensions of Class 300 Slip-On Flanges
All dimensions are in “mm” unless noted otherwise.
Dimensions of Class 300 Slip On Flanges as per ASME B16.5.
| Nominal Pipe Size | Outside diameter of flange (D) | Thick of flange (B) | Diameter of Hub at base (A) | Diameter of raised face (G) | Length thru Hub (H) | Dia of bore (ID) | No of holes | Dia of holes (L) | Dia of bolts | Diam of bolt circle (K) | Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 38.1 | 22.4 | 22.4 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 47.8 | 25.4 | 27.7 | 4 | 19.1 | 5/8 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 53.8 | 26.9 | 34.5 | 4 | 19.1 | 5/8 | 88.9 | 1 |
| 1-1/4 | 133.4 | 19.1 | 63.5 | 63.5 | 26.9 | 43.2 | 4 | 19.1 | 5/8 | 98.6 | 2 |
| 1-1/2 | 155.4 | 20.6 | 73.2 | 69.9 | 30.2 | 49.5 | 4 | 22.4 | 3/4 | 114.3 | 3 |
| 2 | 165.1 | 22.4 | 91.9 | 84.1 | 33.3 | 62 | 8 | 19.1 | 5/8 | 127 | 3 |
| 2-1/2 | 190.5 | 25.4 | 104.6 | 100.1 | 38.1 | 74.7 | 8 | 22.4 | 3/4 | 149.4 | 5 |
| 3 | 209.6 | 28.4 | 127 | 117.3 | 42.9 | 90.7 | 22.4 | 8 | 3/4 | 168.1 | 6 |
| 3-1/2 | 228.6 | 30.2 | 139.7 | 133.4 | 44.5 | 103.4 | 22.4 | 8 | 3/4 | 184.2 | 8 |
| 4 | 254 | 31.8 | 157.2 | 146.1 | 47.8 | 116.1 | 8 | 22.4 | 3/4 | 200.2 | 10 |
| 5 | 279.4 | 35.1 | 185.7 | 177.8 | 50.8 | 143.8 | 8 | 22.4 | 3/4 | 235 | 13 |
| 6 | 317.5 | 36.6 | 215.9 | 206.2 | 52.3 | 170.7 | 12 | 22.4 | 3/4 | 269.7 | 18 |
| 8 | 381 | 41.1 | 269.7 | 260.4 | 62 | 221.5 | 12 | 25.4 | 73/93 | 330.2 | 26 |
| 10 | 444.5 | 47.8 | 323.9 | 320.5 | 66.5 | 276.4 | 16 | 28.4 | 1 | 387.4 | 37 |
| 12 | 520.7 | 50.8 | 381 | 374.7 | 73.2 | 327.2 | 16 | 31.8 | 1-1/8 | 450.9 | 52 |
| 14 | 584.2 | 53.8 | 412.8 | 425.5 | 76.2 | 359.2 | 20 | 31.8 | 1-1/8 | 514.4 | 75 |
| 16 | 647.7 | 57.2 | 469.9 | 482.6 | 82.6 | 410.5 | 20 | 35.1 | 1-1/4 | 571.5 | 86 |
| 18 | 711.2 | 60.5 | 533.4 | 533.4 | 88.9 | 461.8 | 24 | 35.1 | 1-1/4 | 628.7 | 113 |
| 20 | 774.7 | 63.5 | 584.2 | 587.2 | 95.3 | 513.1 | 24 | 35.1 | 1-1/4 | 685.8 | 143 |
| 24 | 914.4 | 69.9 | 692.2 | 701.5 | 106.4 | 616 | 24 | 41.1 | 1-1/2 | 812.8 | 215 |
Dimensions of Class 600 Slip-On Flanges
All dimensions are in “mm” unless noted otherwise.
Dimensions of Class 600 Slip On Flanges as per ASME B16.5.
| Nominal Pipe Size | Outside diameter of flange (D) | Thick of flange (B) | Diameter of Hub at base (A) | Diameter of raised face (G) | Length thru Hub (H) | Dia of bore (ID) | No of holes | Dia of holes (L) | Dia of bolts | Diam of bolt circle (K) | Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 38.1 | 22.4 | 22.4 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 47.8 | 25.4 | 27.7 | 4 | 19.1 | 5/8 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 53.8 | 26.9 | 34.5 | 4 | 19.1 | 5/8 | 88.9 | 2 |
| 1-1/4 | 133.4 | 20.6 | 63.5 | 63.5 | 28.4 | 43.2 | 4 | 19.1 | 5/8 | 98.6 | 2 |
| 1-1/2 | 155.4 | 22.4 | 73.2 | 69.9 | 31.8 | 49.5 | 4 | 22.4 | 3/4 | 114.3 | 3 |
| 2 | 165.1 | 25.4 | 91.9 | 84.1 | 36.6 | 62 | 8 | 19.1 | 5/8 | 127 | 4 |
| 2-1/2 | 190.5 | 28.4 | 104.6 | 100.1 | 41.1 | 74.7 | 8 | 22.4 | 3/4 | 149.4 | 6 |
| 3 | 209.6 | 31.8 | 127 | 117.3 | 46 | 90.7 | 8 | 22.4 | 3/4 | 168.1 | 7 |
| 3-1/2 | 228.6 | 35.1 | 139.7 | 133.4 | 49.3 | 103.4 | 8 | 25.4 | 7/8 | 184.2 | 10 |
| 4 | 273.1 | 38.1 | 157.2 | 152.4 | 53.8 | 116.1 | 8 | 25.4 | 7/8 | 215.9 | 17 |
| 5 | 330.2 | 44.5 | 185.7 | 189 | 60.5 | 143.8 | 8 | 28.4 | 1 | 266.7 | 29 |
| 8 | 419.1 | 55.6 | 269.7 | 273.1 | 76.2 | 221.5 | 12 | 31.8 | 1-1/8 | 349.3 | 52 |
| 10 | 508 | 63.5 | 323.9 | 342.9 | 85.9 | 276.4 | 16 | 35.1 | 1-1/4 | 431.8 | 77 |
| 12 | 558.8 | 66.5 | 381 | 400.1 | 91.9 | 327.2 | 20 | 35.1 | 1-1/4 | 489 | 91 |
| 14 | 603.3 | 69.9 | 412.8 | 431.8 | 93.7 | 359.2 | 20 | 38.1 | 1-3/8 | 527.1 | 104 |
| 16 | 685.8 | 76.2 | 469.9 | 495.3 | 106.4 | 410.5 | 20 | 41.1 | 1-1/2 | 603.3 | 150 |
| 18 | 743 | 82.6 | 533.4 | 546.1 | 117.3 | 461.8 | 20 | 44.5 | 1-5/8 | 654.1 | 181 |
| 20 | 812.8 | 88.9 | 584.2 | 609.6 | 127 | 513.1 | 24 | 44.5 | 1-5/8 | 723.9 | 231 |
| 24 | 939.8 | 101.6 | 692.2 | 717.6 | 139.7 | 616 | 24 | 50.8 | 1-7/8 | 838.2 | 331 |
Dimensions of Class 900 Slip-On Flanges
All dimensions are in “mm” unless noted otherwise.
Dimensions of Class 900 Slip On Flanges as per ASME B16.5.
| Nominal Pipe Size | Outside diameter of flange (D) | Thick of flange (B) | Diameter of Hub at base (A) | Diameter of raised face (G) | Length thru Hub (H) | Dia of bore (ID) | No of holes | Dia of holes (L) | Dia of bolts | Diam of bolt circle (K) | Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 120.7 | 22.4 | 35.1 | 38.1 | 31.8 | 22.4 | 4 | 22.4 | 3/4 | 82.6 | 2 |
| 3/4 | 130 | 25.4 | 42.9 | 44.5 | 35.1 | 27.7 | 4 | 22.4 | 3/4 | 88.9 | 2 |
| 1 | 149.4 | 28.4 | 50.8 | 52.3 | 41.1 | 34.5 | 4 | 25.4 | 7/8 | 101.6 | 4 |
| 1-1/4 | 158.8 | 28.4 | 63.5 | 63.5 | 41.1 | 43.2 | 4 | 25.4 | 7/8 | 111.3 | 4 |
| 1-1/2 | 177.8 | 31.8 | 73.2 | 69.9 | 44.5 | 49.5 | 4 | 28.4 | 1 | 124 | 5 |
| 2 | 215.9 | 38.1 | 91.9 | 104.6 | 57.2 | 62 | 8 | 25.4 | 7/8 | 165.1 | 11 |
| 2-1/2 | 244.3 | 41.1 | 104.6 | 124 | 63.5 | 74.7 | 8 | 28.4 | 1 | 190.5 | 16 |
| 3 | 241.3 | 38.1 | 127 | 127 | 53.8 | 90.7 | 8 | 25.4 | 7/8 | 190.5 | 12 |
| 4 | 292.1 | 44.5 | 157.2 | 158.8 | 69.9 | 116.1 | 8 | 31.8 | 1-1/8 | 235 | 24 |
| 5 | 349.3 | 50.8 | 185.7 | 190.5 | 79.2 | 143.8 | 8 | 35.1 | 1-1/4 | 279.4 | 38 |
| 6 | 381 | 55.6 | 215.9 | 235 | 85.9 | 170.7 | 31.8 | 12 | 1-1/8 | 317.5 | 50 |
| 8 | 469.9 | 63.5 | 269.7 | 298.5 | 101.6 | 221.5 | 12 | 38.1 | 1-3/8 | 393.7 | 77 |
| 10 | 546.1 | 69.9 | 323.9 | 368.3 | 108 | 276.4 | 16 | 38.1 | 1-3/8 | 469.9 | 111 |
| 12 | 609.6 | 79.2 | 381 | 419.1 | 117.3 | 327.2 | 20 | 38.1 | 1-3/8 | 533.4 | 147 |
| 14 | 641.4 | 85.9 | 412.8 | 450.9 | 130 | 359.2 | 20 | 41.1 | 1-1/2 | 558.8 | 181 |
| 16 | 704.9 | 88.9 | 469.9 | 508 | 133.4 | 410.5 | 20 | 44.5 | 1-5/8 | 41.3 | 616 |
| 18 | 787.4 | 101.6 | 533.4 | 565.2 | 152.4 | 461.8 | 20 | 50.8 | 1-7/8 | 685.8 | 272 |
| 20 | 857.3 | 108 | 584.2 | 622.3 | 158.8 | 513.1 | 20 | 53.8 | 2 | 749.3 | 331 |
| 24 | 1041.4 | 139.7 | 692.2 | 749.3 | 203.2 | 616 | 20 | 66.5 | 2-1/2 | 901.7 | 635 |
Dimensions of Class 1500 Slip-On Flanges
All dimensions are in “mm” unless noted otherwise.
Dimensions of Class 1500 Slip On Flanges as per ASME B16.5.
| Nominal Pipe Size | Outside diameter of flange (D) | Thick of flange (B) | Diameter of Hub at base (A) | Diameter of raised face (G) | Length thru Hub (H) | Dia of bore (ID) | No of holes | Dia of holes (L) | Dia of bolts | Diam of bolt circle (K) | Approx weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 120.7 | 22.4 | 35.1 | 38.1 | 31.8 | 22.4 | 4 | 22.4 | 3/4 | 82.6 | 2 |
| 3/4 | 130 | 25.4 | 42.9 | 44.5 | 35.1 | 27.7 | 4 | 22.4 | 3/4 | 88.9 | 2 |
| 1 | 149.4 | 28.4 | 50.8 | 52.3 | 41.1 | 34.5 | 4 | 25.4 | 7/8 | 101.6 | 4 |
| 1-1/4 | 158.8 | 28.4 | 63.5 | 63.5 | 41.1 | 43.2 | 4 | 25.4 | 7/8 | 111.3 | 4 |
| 1-1/2 | 177.8 | 31.8 | 73.2 | 69.9 | 44.5 | 49.5 | 4 | 28.4 | 1 | 124 | 5 |
| 2 | 215.9 | 38.1 | 91.9 | 104.6 | 57.2 | 62 | 8 | 25.4 | 7/8 | 165.1 | 11 |
| 2-1/2 | 244.3 | 41.1 | 104.6 | 124 | 63.5 | 74.7 | 8 | 28.4 | 1 | 190.5 | 16 |
| 3 | 266.7 | 47.8 | 127 | 133.4 | 73.2 | – | 8 | 31.8 | 1-1/8 | 203.2 | 22 |
| 4 | 311.2 | 53.8 | 157.2 | 162.1 | 90.4 | – | 8 | 35.1 | 1-1/4 | 241.3 | 33 |
| 5 | 374.7 | 73.2 | 185.7 | 196.9 | 104.6 | – | 8 | 41.1 | 1-1/2 | 292.1 | 59 |
| 6 | 393.7 | 82.6 | 215.9 | 228.6 | 119.1 | – | 12 | 38.1 | 1-3/8 | 317.5 | 75 |
| 8 | 482.6 | 91.9 | 269.7 | 292.1 | 142.7 | – | 12 | 44.5 | 1-5/8 | 393.7 | 118 |
| 10 | 584.2 | 108 | 323.9 | 368.3 | 158.8 | – | 12 | 50.8 | 1-7/8 | 482.6 | 197 |
| 12 | 673.1 | 124 | 381 | 450.9 | 180.8 | – | 16 | 53.8 | 2 | 571.5 | 263 |
| 14 | 749.3 | 133.4 | 412.8 | 495.3 | – | – | 16 | 60.5 | 2-1/4 | 635 | – |
| 16 | 825.5 | 146.1 | 469.9 | 552.5 | – | – | 16 | 66.5 | 2-1/2 | 704.9 | – |
| 18 | 914.4 | 162.1 | 533.4 | 596.9 | – | – | 16 | 73.2 | 2-3/4 | 774.7 | – |
| 20 | 984.3 | 177.8 | 584.2 | 641.4 | – | – | 16 | 79.2 | 3 | 831.9 | – |
| 24 | 1168.4 | 203.2 | 692.2 | 762 | – | – | 16 | 91.9 | 3-1/2 | 990.6 | – |