reducing weld neck flange

Reducing Weld Neck Flange

At Metrade, we supply premium-grade reducing weld neck flange solutions that deliver a compact, high-strength method for joining pipes of different diameters in demanding applications. These flanges perform reliably in high-pressure and high-temperature systems across industries where long-term integrity, flow efficiency, and durability are critical for safe and consistent operation.

We engineer each component with exceptional precision to ensure a smooth and secure transition between varying pipe sizes. This design approach boosts structural performance, enhances sealing capability, and lowers stress concentrations in key areas. By integrating the function of a standard weld neck flange with a built-in reducer, each product streamlines installation and supports efficient piping layouts. Our rigorous quality controls, wide material selection, and adherence to international manufacturing standards ensure that every reducing weld neck flanges deliver dependable performance in modern industrial environments.

Materials             - Carbon Steel
                              - Low Temperature CS
                              - Stainless Steel
                              - Special Stainless Steel
                              - Alloy Steel
                              - Nickel Alloy
                              - Titanium Alloy


Material

Specification

Grades
Carbon SteelASTM A105A105
Low Temperature Carbon SteelASTM A350LF2 and LF3
Stainless Steel and Special Stainless SteelASTM A182F304/304L, 316/316L, 310, 317, 321, 347, 410, 904, H
Alloy Steel(EFW, LSAW, HSAW)ASTM A182F5 / 9 / 11 / 22 / 91
Nickel Alloy 200/201B564UNS N02200/N02201
Nickel Alloy 276B564UNS N10276 - Hastelloy C-276
Nickel Alloy 400B564UNS N04400 - Monel 400
Nickel Alloy 600B564UNS N06600 - Inconel 600
Nickel Alloy 625B564UNS N06625 - Inconel 625
Nickel Alloy 800H/800HTB564UNS N08810/N08811 - Incoloy 800H/HT
Nickel Alloy 825B564UNS N08825 - Incoloy 825
Titanium AlloyB381Gr 1 / 2 / 5 / 7
           

A Reducing Weld Neck Flange is a high-strength, precision-engineered component designed to connect pipes of different diameters while ensuring smooth fluid flow and superior structural integrity. It features a long tapered hub that gradually transitions into the pipe, providing excellent reinforcement at the weld joint and minimizing stress concentration. The reducing design eliminates the need for a separate reducer, making it a space-saving and efficient solution for pipeline systems that require size transitions. This flange type is ideal for high-pressure and high-temperature applications due to its robust welded connection, which ensures leak-proof and reliable performance. Typically manufactured from premium materials such as carbon steel, stainless steel, and alloy steel, reducing weld neck flanges offer outstanding resistance to corrosion, heat, and mechanical stress. They are widely used in industries like oil and gas, petrochemical, power generation, and chemical processing, where safety, durability, and precision are critical.