Class 150 F304/L Stainless Steel Socket Weld, Raised-Face Flange used with Schedule 40S Pipe
Class 150 F304/L Stainless Steel Socket Weld Raised-Face Flange for Schedule 40S Pipe
The Class 150 F304/L Stainless Steel Socket Weld Raised-Face Flange used with Schedule 40S pipe provides a compact, strong, and corrosion-resistant connection for 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 F304/L Stainless Steel
ASTM A182 / ASME SA-182 F304/F304L stainless steel provides excellent general corrosion resistance, mechanical strength, durability, and fabrication characteristics. The lower carbon content of F304L helps minimize carbide precipitation associated with welding, making it particularly useful in welded stainless steel piping systems.
Common applications include chemical processing, food and beverage production, pharmaceutical manufacturing, water treatment, utilities, manufacturing, power generation, and industrial process 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 welding procedure and piping code.
Because pipe outside diameter remains consistent for a given nominal pipe size, Schedule 40S primarily identifies the pipe wall thickness and corresponding inside diameter.
The Class 150 designation represents an ASME pressure class rather than a maximum operating pressure of exactly 150 PSI. Actual allowable pressure depends on material, size, temperature, and applicable pressure-temperature ratings.
Raised-Face Flange Construction
The raised-face (RF) design features an elevated gasket seating area that concentrates bolting load over the gasket to help establish a reliable seal.
ASME B16.5 establishes applicable dimensions, facing requirements, bolt patterns, tolerances, and pressure-temperature ratings.
Selecting an F304/L Socket Weld Flange
When ordering, verify nominal pipe size, Schedule 40S pipe requirements, F304/F304L material, Class 150 rating, RF facing, ASME A/SA182 specification, ASME B16.5 requirements, gasket, bolting, welding procedure, temperature, and process media.