Reducing Flange

Reducing Flange

Reducing Flanges

Precision-engineered Reducing Flanges designed to connect piping systems of different nominal diameters while maintaining a compact and reliable flanged connection.

  • Reducing Flanges
  • ANSI / ASME
  • DIN / BS / EN
  • FF / RF / RTJ
  • 150–2500 LBS
  • Industrial Piping

Reducing Flanges Manufacturer & Supplier

Sawariya Metal Industries manufactures, supplies, stocks and exports a wide range of industrial flanges and piping components. Our Reducing Flanges are designed for applications where two piping components with different nominal sizes need to be connected through a flanged arrangement.

Reducing Flanges provide a practical solution for size transitions in piping systems while maintaining a bolted flange connection. They are available in different dimensions, pressure classes, face types and materials according to project and application requirements.

Our Reducing Flanges are suitable for selected applications across oil & gas, petrochemical, chemical processing, power generation, refinery, marine, sugar, nuclear, defence and industrial fabrication sectors.

Key Features

Size Transition

Designed to connect piping components with different nominal diameters.

Compact Design

Combines flange connection and size reduction in a single component.

Multiple Pressure Classes

Available in specified ASME pressure classes and DIN ratings.

Wide Material Range

Stainless, carbon, alloy, duplex, nickel and copper alloy options.

Reducing Flanges Specifications

Dimensions

ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges and custom dimensions.

Standards

ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA and custom drawings.

Pressure Class

150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS and 2500 LBS.

DIN Ratings

ND-6, ND-10, ND-16, ND-25 and ND-40.

Size Range

1/2″ (15 NB) to 48″ (1200 NB).

Flange Face

Flat Face (FF), Raised Face (RF) and Ring Type Joint (RTJ).

Applicable Standards

DIN Standards

DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 and DIN 2673.

ANSI / ASME Standards

ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36 and ANSI B16.48.

BS Standards

BS 4504, BS 1560 and BS 10.

Flange Face Types

Flat Face — FF

Flat-face configuration for applications requiring a flat mating surface.

Raised Face — RF

Raised-face configuration commonly specified for industrial pressure piping systems.

Ring Type Joint — RTJ

Ring-type joint configuration for specified high-integrity sealing applications.

Materials & Grades

Stainless Steel Reducing Flanges

ASTM A182 / A240 F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L.

Duplex & Super Duplex Steel

ASTM / ASME A/SA 182 F44, F45, F51, F53, F55, F60 and F61.

Alloy Steel

ASTM / ASME A/SA 182 & A387 F1, F5, F9, F11, F12, F22 and F91.

Carbon Steel

ASTM / ASME A/SA 105, A350, A181 LF2, A516 Gr.70, A36, A694 F42, F46, F52, F60, F65 and F706.

Nickel Alloys

Nickel 200/201, Monel 400/500, Inconel 600/601/625/800/825, Hastelloy C276 and Alloy 20.

Copper Alloys

Cu-Ni 90/10, Cu-Ni 70/30 and selected copper alloy UNS grades.

Detailed Material Selection

Material CategoryGrades / MaterialsMaterial Standard
Stainless SteelF304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904LASTM A182 / A240
Duplex / Super DuplexF44, F45, F51, F53, F55, F60, F61ASTM / ASME A/SA 182
Alloy SteelF1, F5, F9, F11, F12, F22, F91ASTM / ASME A/SA 182 / A387
Carbon SteelA105, A350, LF2, A516 Gr.70, A36, A694 F42, F46, F52, F60, F65, F706ASTM / ASME
Nickel AlloysNickel 200/201, Monel 400/500, Inconel 600/601/625/800/825, Hastelloy C276, Alloy 20ASTM SB564 / SB160 / SB472 / SB162
Copper AlloysCu-Ni 90/10, Cu-Ni 70/30, C10100, C10200, C10300, C10800, C12000, C12200ASTM SB61 / SB62 / SB151 / SB152

Reducing Flange Design

Different Bore Sizes

Designed with different flange and bore dimensions to accommodate specified pipe size transitions.

Integrated Reduction

Provides a compact method of transitioning between different nominal pipe diameters within a flanged connection.

Precision Machining

Machined surfaces, bore geometry and flange dimensions are produced according to the specified standard or approved drawing.

Applications & Industries

  • Oil & Gas
  • Petrochemical Plants
  • Chemical Processing
  • Power Generation
  • Refineries
  • Marine Industry
  • Sugar Industry
  • Nuclear Applications
  • Defence
  • Process Piping
  • Industrial Fabrication
  • Pressure Piping

Quality & Inspection

Engineered for Reliable Piping Connections

Reducing Flanges can be supplied with inspection and documentation requirements according to applicable standards, approved drawings, project specifications and purchase order requirements.

  • Dimensional inspection
  • Flange face and bore inspection
  • Material identification and traceability
  • Visual and surface inspection
  • Material Test Certificate documentation
  • Heat number traceability where specified
  • Third-party inspection support as required
  • Custom drawings and technical documentation

Why Choose Reducing Flanges?

Efficient Size Transition

Designed to accommodate specified transitions between different piping diameters.

Wide Material Selection

Available in stainless steel, carbon steel, alloy steel, duplex, nickel and copper alloys.

Multiple Standards

Available according to specified ANSI, ASME, DIN, BS and EN requirements.

Multiple Face Types

Flat Face, Raised Face and Ring Type Joint configurations as specified.

Custom Requirements

Dimensions, materials, bore sizes and documentation can be supplied according to project requirements.

Industrial Applications

Suitable for selected oil & gas, chemical, petrochemical, power, marine and fabrication applications.

Reducing Flanges Manufacturer in India

Sawariya Metal Industries manufactures and supplies Reducing Flanges for industrial piping systems and process applications. Our range includes stainless steel, carbon steel, alloy steel, duplex steel, super duplex steel, nickel alloy and copper alloy Reducing Flanges in different sizes, pressure classes and face configurations.

Our Reducing Flanges are available according to specified ANSI, ASME, DIN, BS and EN requirements with Flat Face (FF), Raised Face (RF) and Ring Type Joint (RTJ) configurations. Products can be manufactured or supplied according to approved drawings and project specifications.

Reducing Flanges are used in selected applications where a flanged connection between different pipe sizes is required. Industries include oil & gas, petrochemical, chemical processing, refinery, power generation, marine, sugar, nuclear, defence and industrial fabrication.

Related Flange Products

Blind Flanges

Solid flanges for closing and isolating piping ends.

Slip On Flanges

Flanges designed for pipe slip-on and welding applications.

Weld Neck Flanges

High-integrity flanges for demanding pressure piping systems.

Socket Weld Flanges

Compact flanges for selected small-diameter piping applications.

Screwed / Threaded Flanges

Threaded flange solutions for compatible piping systems.

Spectacle Blind Flanges

Figure-eight isolation components for positive line isolation.

Technical Note:

Reducing Flange selection should be based on nominal pipe sizes, flange dimensions, pressure-temperature requirements, material compatibility, face configuration and applicable piping standards. Dimensional, pressure rating, material and manufacturing requirements should always be confirmed against the latest governing standard, approved drawing, project specification and purchase order before manufacturing or installation.