SOH flanges are commonly lower in price than weld-neck flanges.The slip-on flange is generally used in the petrochemical industry.When a raised face is necessary for slip on pipe flanges,the standard height is 1/16" for slip on pipe flanges under 400#.For slip on pipe flanges of 400# and up,the standard slip on pipe flange raised face height is 1/4".
Slip on pipe flanges actually slip over the pipe.SOH flanges are typically machined with an inside diameter slightly larger than the outside diameter of the pipe. Slip on pipe flanges are secured to the pipe with a fillet weld at the top and the bottom of the slip on pipe flanges.
SOP Flange Range: Less than 250
SOH Flange Range: Equal or greater than 250
| 10K Plate
Flange
Nominal
size | 10K Plate
Flange
Outer
diameter | Diameter of
bolt hole
centre circle | Diameter
of hub | 10K Plate
Flange
Inside
diameter | Thickness
of 10K
Plate
Flange | Bulge
Height | Number of
bolt,Diameter
of bolt hole | Nominal
designation
of thread
of bolt |
| DN | D | D1 | D2 | D3 | t | f | n-d | M |
| 20 | 100 | 75 | 58 | 19 | 18 | 1 | 4-15 | 12 |
| 25 | 125 | 90 | 70 | 25 | 18 | 1 | 4-19 | 16 |
| 40 | 140 | 105 | 85 | 38 | 20 | 2 | 4-19 | 16 |
| 50 | 155 | 120 | 100 | 51 | 20 | 2 | 4-19 | 16 |
| 65 | 175 | 140 | 120 | 61 | 22 | 2 | 4-19 | 16 |
| 80 | 185 | 150 | 130 | 76 | 22 | 2 | 8-19 | 16 |
| 100 | 210 | 175 | 155 | 102 | 24 | 2 | 8-19 | 16 |
| 125 | 250 | 210 | 185 | 125 | 24 | 2 | 8-23 | 20 |
| 150 | 280 | 240 | 215 | 152 | 26 | 2 | 8-23 | 20 |
| 200 | 330 | 290 | 265 | 204 | 26 | 2 | 8-23 | 20 |
