ASME B16.5 & B16.47 Forged Slip-On Flanges
Economical and versatile forged slip-on flanges offering fast alignment and reliable dual-fillet weld integrity.
ASME B16.5 Forged Slip-On Raised Face Flange (SORF)
Starlight Tubes manufactures precision forged Slip-On Flanges (SORF) per ASME B16.5, ASME B16.47, and EN 1092-1 Type 12. Slip-on flanges are preferred across chemical processing, water utilities, HVAC, and oil storage terminals due to their lower procurement cost and straightforward installation.
Available in carbon steel (A105, A350 LF2), stainless steel (A182 F304L, F316L, F321), Duplex (F51, F53), and Aluminium. Every flange is CNC-machined with standard phonographic serrated raised faces per ASME B16.5.
Technical Specifications
ASTM / ASME CompliantTechnical Specifications — Forged Slip-On Flanges
Pressure ratings, standard dimensions, and forging specifications for ASME B16.5 Slip-On Flanges
| Pressure Class | Working Pressure (psi at -29°C to 38°C) | Hydrostatic Shell Test (psi) | Standard Face Types |
|---|---|---|---|
| Class 150# | 285 psi | 450 psi | Raised Face (RF) / Flat Face |
| Class 300# | 740 psi | 1125 psi | Raised Face (RF) 1/16" |
| Class 600# | 1480 psi | 2225 psi | Raised Face (RF) 1/4" |
| Class 900# | 2220 psi | 3350 psi | Raised Face (RF) 1/4" |
| Class 1500# | 3705 psi | 5575 psi | Raised Face (RF) 1/4" |
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ASME B16.5 Forged Weld Neck Flanges
High-pressure forged weld neck flanges (WNRF / RTJ) in carbon steel, stainless steel, duplex, and nickel alloys
ASME B16.5 Forged Blind Flanges
Solid forged blanking flanges (BLRF / RTJ) in carbon steel, stainless steel, duplex, and superalloys
ASME B16.5 & B16.47 Forged Flanges
Precision forged and CNC-machined high-pressure piping flanges for offshore, petrochemical, and power generation
Direct Manufacturer of Forged Slip-On Flanges
Starlight Tubes delivers certified forged slip-on flanges with CNC serrated faces, full mill certification, and rapid global dispatch.
Frequently Asked Questions on ASME B16.5 Forged Slip-On Flanges
Key engineering, tolerance, and international compliance answers from our metallurgical quality desk.
Slip-on flanges require two fillet welds: one external weld at the hub shoulder and one internal weld near the flange face (leaving a small setback equal to pipe wall thickness).
Request Project Quotation for ASME B16.5 Forged Slip-On Flanges
Submit your required sizes, wall thicknesses, material grades, and total tonnage. Our technical sales engineers respond with complete mill pricing and lead times within 24 hours.