🔷 Concentric Reducer – Butt Weld Pipe Fitting

Manufacturer, Supplier & Exporter – VikTech Fittings

🔹 Product Overview

VikTech Fittings is a leading manufacturer, supplier, and exporter of premium quality Concentric Reducers manufactured in accordance with ASME B16.9, DIN, EN, and international standards.

A Concentric Reducer is a cone-shaped butt weld pipe fitting used to connect two pipes of different diameters while maintaining a common centerline. It is widely used in vertical piping systems and applications where symmetrical flow transition is required.

This fitting ensures smooth flow with minimal turbulence and uniform pressure distribution.

🔹 What is a Concentric Reducer?

A Concentric Reducer has:

• Larger diameter on one end

• Smaller diameter on the other end

• Both ends aligned along the same center axis

Example:
8” × 4” Concentric Reducer

It gradually reduces the pipe size, minimizing sudden pressure drop and flow disturbance.

🔹 Technical Specifications

✔ Standards

• ASME B16.9

• MSS-SP-75

• DIN 2616

• EN 10253

✔ Size Range

• ½” NB to 48” NB

• Custom sizes available

✔ Wall Thickness

• SCH 10

• SCH 20

• SCH 40

• SCH 60

• SCH 80

• SCH 120

• SCH 160

• XXS

✔ End Type

• Butt Weld (Beveled Ends as per ASME B16.25)

🔹 Manufacturing Process

At VikTech Fittings, concentric reducers are manufactured using:

• Hot forming method

• Cold forming for precision

• Hydraulic pressing

• Heat treatment

• Edge beveling

• Shot blasting

This ensures:

✔ Uniform wall thickness
✔ Smooth internal bore
✔ Strong mechanical properties
✔ Accurate dimensional tolerance

🔹 Materials Available

🔸 Carbon Steel

• ASTM A234 WPB

• ASTM A420 WPL6

🔸 Stainless Steel

• ASTM A403 WP304 / 304L

• ASTM A403 WP316 / 316L

🔸 Alloy Steel

• ASTM A234 WP11 / WP22 / WP91

🔸 Duplex & Super Duplex

• ASTM A815 UNS S31803

• ASTM A815 UNS S32750

🔹 Applications of Concentric Reducer

✔ Vertical pipelines
✔ Pump discharge lines
✔ Power plants
✔ Oil & Gas pipelines
✔ Refineries
✔ Chemical plants
✔ Water treatment systems

🔹 Advantages

✔ Smooth flow transition
✔ Reduced turbulence
✔ Uniform pressure distribution
✔ High strength welded joint
✔ Suitable for high temperature & pressure

🔷 Eccentric Reducer – Butt Weld Pipe Fitting

Manufacturer, Supplier & Exporter – VikTech Fittings

🔹 Product Overview

VikTech Fittings manufactures and supplies high-quality Eccentric Reducers designed as per ASME B16.9 and international standards.

An Eccentric Reducer is a butt weld fitting used to connect pipes of different diameters while maintaining one side flat. Unlike concentric reducers, the centerlines are offset.

Eccentric reducers are mainly used in horizontal pipelines to prevent air accumulation and avoid cavitation in pump suction lines.

🔹 What is an Eccentric Reducer?

An Eccentric Reducer has:

• One flat side

• One sloped side

• Offset centerlines

Example:
10” × 6” Eccentric Reducer

It is used where maintaining the bottom or top level of the pipeline is important.

🔹 Types of Eccentric Reducer Installation

🔸 Flat Side Up (FSU)

Used in pump suction lines to prevent air trapping.

🔸 Flat Side Down (FSD)

Used in drainage systems to prevent liquid accumulation.

🔹 Technical Specifications

✔ Standards

• ASME B16.9

• MSS-SP-75

• DIN 2616

• EN 10253

✔ Size Range

• ½” NB to 48” NB

✔ Wall Thickness

• SCH 10 to SCH 160

• XXS

✔ End Type

• Butt Weld (Beveled Ends)

🔹 Manufacturing Process

Manufactured using:

• Hot forming process

• Precision shaping for offset

• Heat treatment

• Dimensional inspection

• Surface finishing

Ensures:

✔ Accurate flat alignment
✔ Strong structure
✔ Uniform stress distribution
✔ High durability

🔹 Materials Available

• Carbon Steel (ASTM A234 WPB)

• Stainless Steel (ASTM A403 WP304 / 316)

• Alloy Steel (WP11, WP22, WP91)

• Duplex & Super Duplex

🔹 Applications of Eccentric Reducer

✔ Pump suction lines
✔ Horizontal pipelines
✔ Oil & Gas plants
✔ Petrochemical industries
✔ Power plants
✔ Chemical processing units
✔ Water treatment plants

🔹 Advantages

✔ Prevents air pockets
✔ Avoids cavitation
✔ Maintains pipeline level
✔ Suitable for critical applications
✔ High pressure resistance

🔹 Testing & Quality (For Both Reducers)

At VikTech Fittings, all reducers undergo:

• Visual inspection

• Dimensional inspection

• Ultrasonic testing

• Hydro testing

• PMI testing

• Radiography (if required)

• Third party inspection

Mill Test Certificate (MTC) provided as per EN 10204 3.1 / 3.2.