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Reducers

Pipe Reducers Specifications

Reducer Types

  • Concentric Reducer
  • Eccentric Reducer
  • Seamless Reducer
  • Welded Reducer
  • Fabricated Reducer
  • Butt Weld Reducer
  • Pipe Reducer

Manufacturing Method

  • Mandrel Method
  • Hot Forming
  • Cold Forming
  • Seamless Manufacturing
  • ERW / Welded
  • Fabricated Manufacturing
  • Precision Forming

Manufacturing Standards

  • ASME B16.9
  • ANSI B16.9
  • ANSI B16.28
  • MSS-SP-43
  • DIN 2605
  • DIN 2615
  • DIN 2616
  • DIN 2617
  • DIN 28011
  • EN 10253-1
  • EN 10253-2

Material Grades

  • Carbon Steel
  • Stainless Steel
  • Alloy Steel
  • Duplex Steel
  • Super Duplex Steel
  • Nickel Alloys
  • Inconel
  • Incoloy
  • Monel
  • Hastelloy
  • Copper
  • Cupro Nickel
  • Low Temperature Steel

Reducer Testing

  • Dimensional Inspection
  • PMI Testing
  • Radiography Testing
  • Ultrasonic Testing
  • Hardness Testing
  • Hydrostatic Testing
  • Visual Inspection
  • Third Party Inspection

Size & Thickness

  • Seamless: 1/2" – 24"
  • Welded: 1/2" – 48"
  • Fabricated: 1/2" – 48"
  • Wall Thickness: 3 – 40 mm
  • Schedule: SCH 5 – XXS
  • Custom Size Available

Pipe Reducer Dimensions Chart

Nominal Size Large End O.D. (mm) Small End O.D. (mm) Reducer Type Standard
1" × 1/2" 33.4 21.3 Concentric / Eccentric ASME B16.9
1 1/2" × 1" 48.3 33.4 Concentric / Eccentric ASME B16.9
2" × 1" 60.3 33.4 Concentric / Eccentric ASME B16.9
2" × 1 1/2" 60.3 48.3 Concentric / Eccentric ASME B16.9
3" × 2" 88.9 60.3 Concentric / Eccentric ASME B16.9
4" × 2" 114.3 60.3 Concentric / Eccentric ASME B16.9
4" × 3" 114.3 88.9 Concentric / Eccentric ASME B16.9
6" × 4" 168.3 114.3 Concentric / Eccentric ASME B16.9
8" × 6" 219.1 168.3 Concentric / Eccentric ASME B16.9
10" × 8" 273.1 219.1 Concentric / Eccentric ASME B16.9
12" × 10" 323.9 273.1 Concentric / Eccentric ASME B16.9
14" × 12" 355.6 323.9 Concentric / Eccentric ASME B16.9
16" × 12" 406.4 323.9 Concentric / Eccentric ASME B16.9
20" × 16" 508.0 406.4 Concentric / Eccentric ASME B16.9
24" × 20" 610.0 508.0 Concentric / Eccentric ASME B16.9

Concentric & Eccentric Reducer Length Chart

Large Size Small Size Reducer Length (mm) Type
1" 1/2" 38 Concentric / Eccentric
1 1/2" 1" 51 Concentric / Eccentric
2" 1" 51 Concentric / Eccentric
2" 1 1/2" 51 Concentric / Eccentric
3" 2" 76 Concentric / Eccentric
4" 2" 102 Concentric / Eccentric
4" 3" 102 Concentric / Eccentric
6" 4" 127 Concentric / Eccentric
8" 6" 152 Concentric / Eccentric
10" 8" 178 Concentric / Eccentric
12" 10" 203 Concentric / Eccentric
14" 12" 330 Concentric / Eccentric
16" 12" 356 Concentric / Eccentric
20" 16" 406 Concentric / Eccentric
24" 20" 508 Concentric / Eccentric

Pipe Reducer Schedule & Wall Thickness

Specification Available Range
Wall Thickness 3 mm – 40 mm
Schedule 5 Available
Schedule 10 Available
Schedule 20 Available
Schedule 30 Available
Schedule 40 / STD Available
Schedule 60 Available
Schedule 80 / XS Available
Schedule 120 Available
Schedule 140 Available
Schedule 160 Available
XXS Available
MANUFACTURING

Forging Process

Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.

1

Material Selection

Prime 304 stainless steel billet sourced and certified.

2

Billet Preparation

Heat to 1100°C – 1250°C for optimal forgeability.

3

Forging

Shape billet into flange geometry under controlled pressure.

4

Heat Treatment

Solution anneal at 1040°C – 1120°C, then quench.

5

Machining & Finishing

CNC machining, drilling, and surface finishing.

6

Testing & Inspection

Tensile, hardness, PMI, visual and impact tests performed.