Class 150 ASME A/SA105 ASME B16.5 Steel Flange used with Schedule 40, XH & 160 Pipe
Class 150 ASME A/SA105 B16.5 Steel Flange for Schedule XH Pipe
The Class 150 ASME A/SA105 ASME B16.5 Steel Flange used with Schedule XH Pipe provides a strong, dependable connection for heavy-wall carbon steel industrial piping systems. Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, these flanges deliver the mechanical strength, durability, and dimensional consistency required for demanding pressure piping applications.
ASTM A105 / ASME SA-105 Forged Carbon Steel
A/SA105 forged carbon steel flanges are widely specified for pressure-containing piping systems used in manufacturing, utilities, petrochemical processing, power generation, oil and gas, mechanical contracting, and industrial facilities.
The Class 150 designation represents the flange pressure class and does not indicate a maximum working pressure of 150 PSI. Allowable pressure depends on material, operating temperature, flange configuration, and applicable ASME pressure-temperature ratings.
Flanges for Schedule XH Pipe
Schedule XH, or Extra Heavy pipe, identifies a heavier pipe wall than standard-weight pipe in applicable nominal sizes. When a flange is specified for Schedule XH pipe, the flange bore must be properly matched to the pipe dimensions, particularly with weld neck flanges, where correct bore alignment helps create a smooth transition between the pipe and flange.
Schedule XH dimensions may correspond to Schedule 80 in many common pipe sizes, but the applicable dimensions should always be verified before ordering.
ASME B16.5 Flange Requirements
These Class 150 steel flanges are manufactured to ASME B16.5, which establishes requirements for flange dimensions, facing, bolt patterns, tolerances, materials, and pressure-temperature ratings for applicable sizes.
A/SA105 flanges are available in configurations including weld neck, slip on, socket weld, threaded, blind, and lap joint flanges, with raised-face or flat-face options where applicable.
When ordering a Class 150 A/SA105 B16.5 flange for Schedule XH pipe, verify nominal pipe size, flange type, bore, facing, material, and exact pipe wall dimensions to ensure proper fit, reliable sealing, and dependable industrial piping performance.