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Concentric & Eccentric Reducers for Pipe Size Transition
Krishna Forge manufactures high-quality butt weld reducers designed for efficient pipe size transition in piping systems. Our reducers are precision-engineered to ensure smooth flow transition, minimal pressure drop, and optimal performance in various industrial applications.
Size Range: 1/2" to 48"
Wall Thickness: Schedule 10 to XXS
Types: Concentric, Eccentric
Pressure Class: 150 to 2500
Ends: Butt Weld
Reduction Ratio: Up to 4 sizes
Comprehensive range of reducer fittings for various industrial applications
Centerline of both ends is the same, creating a symmetrical cone shape. Used in vertical piping or where air entrapment is not a concern.
One edge is straight, preventing air accumulation. Used in horizontal piping to maintain pipe bottom or top alignment.
Long taper length for minimal pressure drop in high-velocity applications and sensitive flow systems.
Short length for space-constrained installations where pressure drop is not critical.
Custom reducers for connecting pipes with significant diameter differences (more than 2 sizes).
Manufactured in various materials for diverse temperature and pressure requirements
| Material Grade | Standards | Applications | Temperature Range | Pressure Rating |
|---|---|---|---|---|
| Carbon Steel A234 WPB, WPC |
ASTM A234, ASME B16.9 | General industrial applications | -20°C to 425°C | Class 150 to 2500 |
| Stainless Steel 304/304L ASTM A403 WP304/304L |
ASTM A403, ASME B16.9 | Food, pharmaceutical industries | -196°C to 800°C | Class 150 to 2500 |
| Stainless Steel 316/316L ASTM A403 WP316/316L |
ASTM A403, ASME B16.9 | Marine, chemical industries | -196°C to 800°C | Class 150 to 2500 |
| Alloy Steel A234 WP5, WP9, WP11 |
ASTM A234, ASME B16.9 | High temperature service | Up to 1100°C | Class 150 to 2500 |
| Duplex Steel UNS S31803, S32750 |
ASTM A815, ASME B16.9 | Corrosive environments | -50°C to 300°C | Class 150 to 2500 |
| Nickel Alloys Inconel, Monel, Hastelloy |
ASTM B366, ASME B16.9 | Extreme temperature applications | Up to 1200°C | Class 150 to 2500 |
Special heat treatment processes including normalizing, annealing, and stress relieving for alloy materials.
Complete material testing including chemical analysis, mechanical testing, and NDT with full certification.
Various surface finishes including pickling & passivation, sand blasting, galvanizing, and painting.
Guidelines for selecting the right reducer for your application
Consider fluid type, velocity, and flow regime
Select taper angle based on allowable pressure loss
Choose length based on available installation space
Comprehensive specifications and dimensional data
| Large End (NPS) | Small End (NPS) | Length (H) | Type |
|---|---|---|---|
| 1/2" | 1/4" | 38 mm | Both |
| 1" | 1/2" | 51 mm | Both |
| 2" | 1" | 76 mm | Both |
| 4" | 2" | 102 mm | Both |
| 6" | 3" | 152 mm | Both |
| 8" | 4" | 203 mm | Both |
| 12" | 6" | 305 mm | Both |
| Parameter | Tolerance | Remarks |
|---|---|---|
| Outside Diameter | ±0.8% | Maximum ±1.6 mm |
| Wall Thickness | ±12.5% | Minimum 87.5% of nominal |
| Overall Length | ±1.6 mm | For sizes ≤ 24" |
| End Squareness | ±1° | Maximum deviation |
| Alignment | ±1.6 mm | Centerline offset |
| Material | Temperature (°C) | Pressure Rating (psi) | Schedule | Included Angle |
|---|---|---|---|---|
| Carbon Steel | -20 to 425 | 150 - 2500 | 10S to XXS | 15° to 30° |
| Stainless Steel | -196 to 800 | 150 - 2500 | 10S to XXS | 15° to 30° |
| Alloy Steel | Up to 1100 | 150 - 2500 | 10S to XXS | 15° to 30° |
| Duplex Steel | -50 to 300 | 150 - 2500 | 10S to XXS | 15° to 30° |
| Nickel Alloys | Up to 1200 | 150 - 2500 | 10S to XXS | 15° to 30° |
Compliance with international quality and dimensional standards
Wide range of applications across multiple industries
Pipeline systems, refineries, petrochemical plants for size transitions
Power plants, boiler feed systems, turbine connections
Chemical plants, reactors, process equipment connections
Water treatment plants, pumping stations, distribution systems
Marine piping systems, offshore platforms, naval vessels
HVAC systems, plumbing, fire protection systems
Industrial plants, processing facilities, equipment piping
Cooling systems, chillers, refrigeration plants
Contact us for expert consultation and customized manufacturing solutions for your specific pipe size transition requirements.
ISO Certified manufacturer of high quality pipe fittings with 15+ years of industry experience.