Class 600 Forged Carbon Steel Blind, Raised-Face Flange

The Class 600 ASTM A105 / ASME SA-105 ASME B16.5 Forged Carbon Steel Blind Raised-Face Flange provides a heavy-duty solution for closing and isolating industrial pressure piping systems. Its solid forged carbon steel construction and raised-face sealing surface deliver excellent mechanical strength and dependable sealing performance for demanding commercial and industrial applications.

ASTM A105 / ASME SA-105 Forged Carbon Steel

Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 600 blind flange offers excellent strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing components used throughout oil and gas, petrochemical processing, refineries, power generation, chemical plants, manufacturing, utilities, and industrial process piping systems.

The Class 600 designation identifies an ASME pressure class rather than a maximum working pressure of 600 PSI. Actual allowable pressure depends on material, operating temperature, flange size, and applicable pressure-temperature ratings.

Class 600 Blind Flange Design

Unlike flanges designed to connect directly to pipe, a blind flange contains no center bore. Its solid construction allows it to close the end of a piping system, valve connection, vessel nozzle, or unused flanged opening while maintaining a removable bolted connection.

Blind flanges provide convenient access for system inspection, cleaning, maintenance, pressure testing, future expansion, and piping modifications.

Raised-Face Flange Construction

The raised-face (RF) flange incorporates an elevated gasket seating surface. This configuration concentrates bolting force over the gasket area, helping establish a dependable seal between compatible mating components.

Manufactured to applicable ASME B16.5 requirements, Class 600 A105/SA-105 blind flanges provide standardized dimensions, bolt patterns, facing requirements, and pressure-temperature ratings.

When ordering, verify nominal pipe size, Class 600 rating, raised-face configuration, A105/SA-105 material, ASME B16.5 requirements, gasket selection, bolting, and service conditions for reliable industrial piping performance.