American standard slip on flange for low-pressure applications. ASME B16.5. NPS 1/2"-24", Class 150-300. Cost-effective solution for general service.
The ASME B16.5 Slip On Flange (SO) slides over the pipe end and is welded both at the outer diameter (fillet weld) and at the bore (fillet weld inside). It offers a cost-effective solution for lower pressure applications where the mechanical strength of a Weld Neck flange is not required. The slip on flange is easier to align during installation compared to weld neck flanges.
JIAJI FORGING manufactures Slip On flanges in austenitic stainless steel, duplex & super duplex stainless steel, and nickel alloys to ASME B16.5 standards.
RF
Raised Face
FF
Flat Face
RTJ
Ring Joint
| Parameter | Specification |
|---|---|
| Standard | ASME B16.5 (NPS 1/2"-24") |
| Size Range | NPS 1/2" - NPS 24" (DN15 - DN600) |
| Pressure Rating | Class 150 / Class 300 |
| Face Finish | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Materials | 304/304L (F8/F8A), 316/316L (F8/F8A), 321 (F8C), 347 (F8D), 310S, 904L, 2205 (F51), 2507 (F53), Inconel 625, Inconel 825, Hastelloy C276, Monel 400 |
| Surface | Anti-rust oil, black, galvanized, painted |
| UNS / AISI | ASTM |
|---|---|
| 304 / 304L | A182 F8 / F8A |
| 316 / 316L | A182 F8 / F8A |
| 321 | A182 F8C |
| 347 | A182 F8D |
| 310S | A182 F310 |
| 904L | A182 F904L |
| UNS | ASTM |
|---|---|
| S31803 (2205) | A182 F51 |
| S32205 (2205) | A182 F51 |
| S32750 (2507) | A182 F53 |
| S32760 | A182 F55 |
| UNS / Alloy | ASTM |
|---|---|
| N06625 (Inconel 625) | A182 F65 |
| N08825 (Incoloy 825) | - |
| N10276 (Hastelloy C276) | - |
| N04400 (Monel 400) | - |
Per ASME B16.5, each slip on flange is permanently marked with: Manufacturer / Material / Pressure Class / Size / Face Type / Heat No.
Example: JIAJI · F316L · SO · 4" · CL150 · RF · BATCH-2024
Optional: NACE MR0175 / ISO 15156, 3.1 / 3.2 inspection certificates (EN 10204), CE marking (PED 2014/68/EU) available upon request.
ASME B16.5 Weld Neck Flange. High-strength. NPS 1/2"-24". Class 150-2500.
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