Concentric Reducers

Stainless Steel Gaskets

The concentric reducer is a vital component in piping systems, designed to facilitate a smooth transition between pipes of different diameters while maintaining a central alignment. This fitting is typically used in industries such as oil and gas, water treatment, and chemical processing, where changes in pipe size are common. Its concentric design ensures that the flow direction remains consistent, minimizing turbulence and pressure loss.


Manufactured from high-quality materials, concentric reducers are built to withstand varying pressures and temperatures, ensuring durability and reliability in demanding environments. The reducer’s concentric alignment helps in reducing the potential for flow disruptions and ensures a streamlined flow path. Meeting rigorous industry standards such as ASTM, ASME, and ANSI, these reducers are engineered for long-term performance and efficiency. Their robust construction and precision make them an ideal choice for applications requiring effective flow management and seamless transitions between different pipe sizes.


Material Grades :

Material TypeGrades
Carbon SteelASTM A 105/A694/ A350 LF3/A350 LF2 - F42, F46, F52, F56, F60, F65
Stainless SteelASTM A 182 - F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316Ti, 316H, 316L, 321, 321H, 347, 347H, 904L
Duplex & Super DuplexASTM / ASME A/SA 182 - F44, F45, F51, F53, F55, F60, F61
Nickel200, 201
Monel400
Inconel600, 601, 625, 800, 825
HastelloyC-276

Concentric Reducers Specifications:

SpecificationDetails
MaterialCarbon Steel, Stainless Steel, Alloy Steel (e.g., ASTM A234 WPB, ASTM A403 WP304, ASTM A420 WPL6)
TypeConcentric Reducer Butt Weld Fittings
Temperature Range-29°C to 593°C (-20°F to 1100°F)
Corrosion ResistanceHigh resistance to various chemicals and environmental conditions
StandardsASTM A234, ASME B16.9, MSS SP-75
Sizes1/2" to 48"
ApplicationsOil & Gas, Chemical Processing, Petrochemical, Power Plants, Pipelines
Production TechniqueButt Welding

Dimension Chart :

Code RCD REISOØ BIGØ SMALLHEIGHT H mmTHEORETICAL WEIGHT KG
DND mmThickness S mmDNd mmThickness s mm
27 213/426.92.31/221.32.0380.08
33 21133.72.61/221.32.0500.09
33 273/426.92.30.09
42 211"1/442.42.61/221.32.0500.12
42 273/426.92.30.13
42 33133.72.60.14
*48 211"1/248.32.61/221.32.0640.18
48 273/426.92.30.19
48 33133.72.60.20
48 421"1/442.42.60.20
60 27260.32.93/426.92.3760.30
60 33133.72.60.31
60 421"1/442.42.60.32
60 481"1/248.32.60.33
76 332"1/276.12.9133.72.6900.40
76 421"1/442.42.60.47
76 481"1/248.32.60.48
76 60260.32.60.49
89 42388.93.21"1/442.42.6900.55
89 481"1/248.32.60.61
89 60260.32.90.62
89 762"1/276.12.90.63
114 484114.33.61"1/248.32.61000.85
114 60260.32.90.98
114 762"1/276.12.91.00
114 89388.93.21.02
139 605139.74.0260.32.91271.60
139 762"1/276.12.91.70
139 89388.93.21.74
139 1144114.33.61.76
*168 766168.34.52"1/276.12.91402.60
168 89388.93.22.70
168 1144114.33.62.82
168 1395139.74.02.94
219 1148219.16.34114.33.61525.03
219 1395139.74.05.12
219 1686168.34.55.18
*273 11410273.06.34114.33.61787.00
*273 1395139.74.07.20
273 1686168.34.57.40
273 2198219.16.37.55
323 16812323.97.16168.34.520311.00
323 2198219.16.311.10
323 273102736.311.20

Applications of Concentric Reducers:

Concentric reducers are used to connect pipes of different diameters, allowing for a smooth transition in flow direction. Their concentric design ensures that the flow path remains centered, which is crucial in various applications, including:

  • Oil and Gas Industry: Used to transition between different pipe sizes in pipelines and processing systems, ensuring smooth flow and reducing turbulence.
  • Chemical Processing: Facilitates the change in pipe size within chemical reactors and pipelines, maintaining flow consistency and minimizing pressure loss.
  • Water Treatment Plants: Connects pipes of varying sizes in treatment and filtration systems, helping to manage water flow efficiently.
  • Power Generation: Applied in power plants to transition between different pipe sizes in steam, water, and cooling systems, ensuring proper flow and pressure control.
  • HVAC Systems: Used in heating, ventilation, and air conditioning systems to adapt to different duct sizes and maintain airflow efficiency.
  • Pulp and Paper Industry: Connects various pipe sizes in pulp processing and paper production systems, aiding in the smooth handling of materials.
  • Automotive Industry: Applied in vehicle exhaust and cooling systems to transition between different pipe sizes, ensuring optimal performance.