Class 150 Forged Carbon Steel Reduced Slip On, Raised-Face Flange
Class 150 ASTM A105 / ASME SA-105 Reduced Slip On Flange
The Class 150 ASTM A105 / ASME SA-105 Forged Carbon Steel Reduced Slip On Raised-Face Flange provides a practical solution for transitioning between different pipe and flange sizes in industrial piping systems. Combining forged carbon steel strength with a reduced bore and slip on design, this flange can simplify piping transitions while providing a durable, serviceable connection.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this reduced slip on flange offers excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for forged steel flanges, fittings, valves, and other pressure-containing piping components used throughout industrial facilities.
The Class 150 designation identifies the flange's ASME pressure class and does not indicate a maximum operating pressure of 150 PSI. Allowable working pressure depends on material, operating temperature, and applicable pressure-temperature ratings.
Reduced Slip On Flange Design
A reduced slip on flange combines the bolting dimensions of a larger flange connection with a smaller bore sized for the connecting pipe. This configuration can provide a compact transition between different piping sizes without requiring a separate reducer immediately at the flange connection.
The pipe slips into the flange bore and is typically secured by appropriate fillet welding according to applicable piping procedures and specifications.
Raised-Face Flange Construction
The raised-face (RF) design features an elevated gasket seating surface around the bore. This configuration concentrates bolting force over the gasket area, helping create an effective seal between compatible mating flanges.
When selecting a Class 150 A105/SA-105 reduced slip on raised-face flange, verify the flange size, reduced bore size, matching pipe outside diameter, facing, material specification, pressure-temperature requirements, and applicable dimensional standard.
For industrial contractors, pipe fabricators, utilities, and MRO professionals, A105/SA-105 reduced slip on flanges provide a strong, economical solution for size transitions in carbon steel industrial piping systems.