Midland Industries 107007 Weld Neck Flange 3 Inch 150 Lb

Product Description

The MIDLAND INDUSTRIES 107007 is a 3-inch weld neck flange manufactured from forged steel and rated for 150 lb pressure service. The weld neck design features a tapered hub that transfers stress from the flange to the pipe, making it well-suited for high-stress and cyclic-load piping systems. The flange measures 7.52 inches in outer diameter with a 0.941-inch flange thickness, and it conforms to ANSI B16.5 dimensional standards. At approximately 11.4 pounds, it is a robust, full-weight forged fitting intended for installation by licensed plumbers, pipefitters, and mechanical contractors on commercial and industrial piping systems.

This weld neck flange is used in commercial and industrial piping applications where a reliable, leak-resistant bolted joint connection is required. Its forged steel construction makes it appropriate for systems carrying steam, water, oil, or gas within the pressure and temperature limits of the 150 lb ANSI class rating. It is typically welded to schedule pipe by a qualified welder before the mating flange connection is made up with gasket and bolting.

Key Features

• Weld neck design distributes pipeline stress into the hub, reducing flange stress concentration
• Forged steel construction provides consistent grain structure and mechanical strength
• Conforms to ANSI B16.5 dimensional standards for interchangeable fit with mating flanges, gaskets, and bolting
• 150 lb pressure class rating suitable for a wide range of commercial and industrial service conditions
• 3-inch connection size with 7.52-inch outer diameter and 0.941-inch flange thickness

Compatibility

Designed as an ANSI B16.5 150 lb class weld neck flange for 3-inch nominal pipe size, compatible with standard 150 lb mating flanges, spiral wound or ring gaskets, and ANSI-rated bolting hardware conforming to the same pressure class.

Installation Notes

Installation requires a certified welder to butt-weld the hub end to the mating pipe before the flanged joint is assembled. The mating flange face, gasket, and bolting should all conform to ANSI B16.5 150 lb requirements. Follow applicable piping codes such as ASME B31.1 or B31.3 for joint assembly, bolt torque sequence, and inspection requirements. Depressurize and isolate the system completely before any flange work is performed.