Class 150 Hot Dipped Galvanized Forged Carbon Steel Weld Neck, Raised-Face Flange for Schedule 40 P
Class 150 Hot-Dipped Galvanized A105/SA-105 Weld Neck Flange for Schedule 40 Pipe
The Class 150 ASTM A105 / ASME SA-105 Hot-Dipped Galvanized Forged Carbon Steel Weld Neck Raised-Face Flange for Schedule 40 Pipe provides a strong, durable connection for industrial and commercial piping systems. Its tapered weld neck, forged carbon steel construction, protective galvanized finish, and raised-face sealing surface provide dependable performance in appropriate pressure piping applications.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 150 weld neck flange provides excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing piping components used in industrial processing, manufacturing, utilities, mechanical piping, water systems, energy facilities, and general industrial applications.
The Class 150 designation represents a pressure class rather than a maximum working pressure of 150 PSI. Actual allowable pressure depends on material, temperature, flange size, and applicable pressure-temperature ratings.
Weld Neck Design for Schedule 40 Pipe
A weld neck flange features a long, tapered hub that transitions gradually from the flange body to the connecting pipe. The flange is installed using a butt-weld connection, creating a strong, permanent joint while helping distribute mechanical stress through the tapered hub.
For Schedule 40 pipe, the flange bore can be selected or machined to correspond with the pipe wall thickness and inside diameter, promoting smoother internal alignment through the welded connection.
Hot-Dipped Galvanized Protective Finish
The hot-dipped galvanized zinc coating helps protect the forged carbon steel from atmospheric corrosion caused by moisture, humidity, and outdoor weather exposure. Coating suitability should be verified for the intended welding procedure and service environment.
Raised-Face Flange Construction
The raised-face (RF) design provides an elevated gasket seating surface that concentrates bolting force over the gasket area, helping establish a dependable seal.
When ordering, verify nominal pipe size, Schedule 40 bore, Class 150 rating, raised-face configuration, A105/SA-105 material, hot-dip galvanized finish, gasket requirements, dimensional standard, and service conditions for reliable industrial piping performance.