ASME/ANSI B16.5 Class 600 Slip On Raised Face Flange (600 LBS SO Flange)
ASME/ANSI B16.5 Class 600 slip on raised face flanges are widely used in medium to high pressure piping systems where reliable sealing and ease of installation are required. These flanges are designed according to ASME B16.5 standards and are commonly referred to as 600 lbs slip on flanges or Class 600 SO RF flanges.
A slip on flange is installed by sliding it over the pipe and welding both inside and outside of the flange, providing adequate strength and leak resistance. Compared with weld neck flanges, slip on flanges offer easier alignment and lower fabrication cost, making them suitable for a wide range of industrial applications.
The raised face (RF) design improves sealing performance by concentrating gasket pressure on a smaller surface area, ensuring a tight and reliable seal in pressure piping systems.
ASME B16.5 Class 600 Slip On Flange Specification
| Item | Specification |
|---|---|
| Standard | ASME/ANSI B16.5 |
| Pressure Class | Class 600 (600 LBS) |
| Flange Type | Slip On (SO) |
| Facing Type | Raised Face (RF) |
| Size Range | NPS 1/2″ – 24″ |
| Pressure Rating | Medium to High Pressure |
ASME B16.5 defines the dimensions, tolerances, pressure-temperature ratings and materials for pipe flanges and flanged fittings.
Materials for Class 600 Slip On Flanges
ASME B16.5 Class 600 slip on flanges are available in a wide range of materials depending on service conditions.
Carbon Steel
- ASTM A105 slip on flange
- ASTM A350 LF2 slip on flange
- ASTM A694 F52 / F60 / F65
Stainless Steel
- ASTM A182 F304 / F304L
- ASTM A182 F316 / F316L
- ASTM A182 F321 / F321H
- ASTM A182 F347 / F347H
Alloy Steel
- ASTM A182 F11
- ASTM A182 F22
- ASTM A182 F9 / F91
Duplex & Super Duplex Stainless Steel
- ASTM A182 F51 (S31803 / S32205)
- ASTM A182 F53 (S32750)
- ASTM A182 F55 (S32760)
Features of 600 LBS Slip On Flanges
ASME B16.5 Class 600 slip on flanges provide several advantages in piping systems:
- easy installation and alignment
- reduced fabrication cost compared with weld neck flanges
- suitable for moderate to high pressure service
- good sealing performance with raised face design
- widely available in various materials and sizes
These features make slip on flanges a practical solution for many industrial piping applications.
ASME/ANSI B16.5 Class 600 Slip On Flange Dimensions and Weight Chart
Dimensions and Weight Chart for ASME/ANSI B16.5 Class 600 Slip On Flange
600lbs Slip On flange
ASME/ANSI B16.5 Class 600 Slip On Flange Dimensions and Weight Chart
Dimensions and Weight Chart for ASME/ANSI B16.5 Class 600 Slip On Flange
| Pipe | Flang | Hub | Raised Face |
Drilling Template | Approx. Weight |
|||||||
| Norm. size |
O D in. mm |
D in. mm |
J in. mm |
b in. mm |
h in. mm |
m in. mm |
g in. mm |
Number | l in. mm |
k in. mm |
≈ Pounds Kilo |
|
| 1/2″ | 0,84 21,3 |
3,75 95,3 |
0,88 22,4 |
0,56 14,2 |
0,88 22,4 |
1,50 38,1 |
1,38 35,1 |
4 | 0,62 15,7 |
2,62 66,5 |
1,6 0,74 |
|
| 3/4″ | 1,05 26,7 |
4,62 117,3 |
10,9 27,7 |
0,62 15,7 |
1,00 25,4 |
1,88 47,7 |
1,69 42,9 |
4 | 0,75 19,1 |
3,25 82,6 |
2,8 1,27 |
|
| 1″ | 1,315 33,4 |
4,88 124,0 |
1,36 34,5 |
0,69 17,5 |
1,06 26,9 |
2,12 53,8 |
2,00 50,8 |
4 | 0,75 19,1 |
3,50 88,9 |
3,3 1,52 |
|
| 1 1/4″ | 1,66 42,2 |
5,25 133,4 |
1,70 43,2 |
0,81 20,6 |
1,12 28,4 |
2,50 63,5 |
2,50 63,5 |
4 | 0,75 19,1 |
3,88 98,6 |
4,5 2,03 |
|
| 1 1/2″ | 1,90 48,3 |
6,12 155,4 |
1,95 49,5 |
0,88 22,4 |
1,25 31,8 |
2,75 69,9 |
2,88 73,2 |
4 | 0,88 22,4 |
4,50 114,3 |
6,5 2,96 |
|
| 2″ | 2,375 60,3 |
6,50 165,1 |
2,44 62,0 |
1,00 25,4 |
1,44 36,6 |
3,31 84,1 |
3,62 91,9 |
8 | 0,75 19,1 |
5,00 127,0 |
8,0 3,62 |
|
| 2 1/2″ | 2,875 73,0 |
7,50 190,5 |
2,94 74,7 |
1,12 28,4 |
1,62 41,1 |
3,94 100,1 |
4,12 104,6 |
8 | 0,88 22,4 |
5,88 149,4 |
11,6 5,28 |
|
| 3″ | 3,50 88,9 |
8,25 209,6 |
3,57 90,7 |
1,25 31,8 |
1,81 46,0 |
4,62 117,3 |
5,00 127,0 |
8 | 0,88 22,4 |
6,62 168,1 |
15,4 7,00 |
|
| 3 1/2″ | 4,00 101,6 |
9,00 228,6 |
4,07 103,4 |
1,38 35,1 |
1,94 49,3 |
5,25 133,4 |
5,50 139,7 |
8 | 1,00 25,4 |
7,25 184,2 |
19,5 8,84 |
|
| 4″ | 4,50 114,3 |
10,75 273,1 |
4,57 116,1 |
1,50 38,1 |
2,12 53,8 |
6,00 152,4 |
6,19 157,2 |
8 | 1,00 25,4 |
8,50 215,9 |
31,9 14,5 |
|
| 5″ | 5,563 141,3 |
13,00 330,2 |
5,66 143,8 |
1,75 44,5 |
2,38 60,5 |
7,44 189,0 |
7,31 185,7 |
8 | 1,12 28,4 |
10,50 266,7 |
53,7 24,4 |
|
| 6″ | 6,625 168,3 |
14,00 355,6 |
6,72 170,7 |
1,88 47,8 |
2,62 66,5 |
8,75 222,3 |
8,50 215,9 |
12 | 1,12 28,4 |
11,50 292,1 |
63,2 28,7 |
|
| 8″ | 8,625 219,1 |
16,50 419,1 |
8,72 221,5 |
21,9 55,6 |
3,00 76,2 |
10,75 273,1 |
10,62 269,7 |
12 | 1,25 31,8 |
13,75 349,3 |
95,6 43,4 |
|
| 10″ | 10,75 273 |
20,00 508,0 |
10,88 276,4 |
2,50 63,5 |
3,38 85,9 |
13,50 342,9 |
12,75 323,9 |
16 | 1,38 35,1 |
17,00 431,8 |
155 70,3 |
|
| 12″ | 12,75 323,8 |
22,00 558,8 |
12,88 327,2 |
26,2 66,5 |
3,62 91,9 |
15,75 400,1 |
15,00 381,0 |
20 | 1,38 35,1 |
19,25 489,0 |
186 84,2 |
|
| 14″ | 14,0 355,6 |
23,75 603,3 |
14,14 359,2 |
2,75 69,9 |
3,69 93,7 |
17,00 431,8 |
16,25 412,8 |
20 | 1,50 38,1 |
20,75 527,1 |
217 98,7 |
|
| 16″ | 16,0 406,4 |
27,00 685,8 |
16,16 410,5 |
3,00 76,2 |
4,19 106,4 |
19,50 495,3 |
18,50 469,9 |
20 | 1,62 41,1 |
23,75 603,3 |
313 142 |
|
| 18″ | 18,0 457,2 |
29,25 743,0 |
18,18 461,8 |
3,25 82,6 |
4,62 117,3 |
21,50 546,1 |
21,00 533,4 |
20 | 1,75 44,5 |
25,75 654,1 |
381 173 |
|
| 20″ | 20,0 508 |
32,00 812,8 |
20,20 513,1 |
3,50 88,9 |
5,00 127,0 |
24,00 609,6 |
23,00 584,2 |
24 | 1,75 44,5 |
28,50 723,9 |
485 220 |
|
| 24″ | 24,0 609,6 |
37,00 939,8 |
24,25 616,0 |
4,00 101,6 |
5,50 139,7 |
28,25 717,6 |
27,25 692,2 |
24 | 2,00 50,8 |
33,00 838,2 |
687 312 |
|
Typical Applications
ASME B16.5 Class 600 slip on raised face flanges are widely used in:
- oil and gas pipelines
- petrochemical plants
- power generation facilities
- water treatment systems
- chemical processing industries
These flanges are suitable for systems requiring reliable performance under medium to high pressure conditions.
Related Flange Types
Other flange types commonly used in piping systems include:
- Weld Neck Flange (WN)
- Blind Flange (BL)
- Socket Weld Flange (SW)
- Threaded Flange (THD)
- Lap Joint Flange (LJ)
