Class 150 F316/L Stainless Steel Socket Weld, Raised-Face Flange use with Schedule 40S Pipe
Class 150 F316/L Stainless Steel Socket Weld Raised-Face Flange for Schedule 40S Pipe
The Class 150 F316/L Stainless Steel Socket Weld Raised-Face Flange used with Schedule 40S pipe provides a compact, strong, and corrosion-resistant connection for demanding industrial stainless steel piping systems. Manufactured to ASME A/SA182 and ASME B16.5 requirements, this flange combines forged stainless steel construction with a socket weld connection for dependable pressure piping performance.
ASME A/SA182 F316/L Stainless Steel
ASTM A182 / ASME SA-182 F316/F316L stainless steel offers excellent mechanical strength, durability, and corrosion resistance. Its molybdenum content provides improved resistance to pitting and corrosion in many chloride-containing environments compared with F304 stainless steel.
The lower carbon content of F316L stainless steel helps minimize carbide precipitation during welding, supporting corrosion resistance in properly fabricated stainless steel piping systems.
Socket Weld Flange for Schedule 40S Pipe
A socket weld flange incorporates a recessed socket designed to accept the outside diameter of compatible pipe. The Schedule 40S stainless steel pipe is inserted into the socket, positioned with the required installation clearance, and secured with an external fillet weld according to the applicable piping code and qualified welding procedure.
Schedule 40S identifies the pipe wall thickness for the applicable nominal pipe size. Pipe outside diameter remains consistent for a given NPS while wall thickness determines the corresponding inside diameter.
These flanges are commonly used in chemical processing, pharmaceutical manufacturing, food and beverage production, water treatment, marine applications, utilities, and industrial process piping.
The Class 150 designation represents an ASME pressure class rather than a maximum working pressure of exactly 150 PSI.
Raised-Face Flange Construction
The raised-face (RF) design concentrates bolting load over an elevated gasket seating area to help establish a dependable seal.
ASME B16.5 establishes applicable dimensions, facing, bolting, tolerances, and pressure-temperature ratings.
Selecting an F316/L Socket Weld Flange
When ordering, verify nominal pipe size, Schedule 40S requirements, F316/F316L material, Class 150 rating, RF facing, ASME A/SA182 specification, ASME B16.5 requirements, gasket, bolting, welding procedure, temperature, process media, and corrosion requirements.