Reducing Flanged Pipe Spool Manufacturer (SS304L / 316L / S32205)
Custom Reducing Pipe Spool Fabrication Supplier
Reducing Flanged Pipe Spools (also known as reducing pipe spools) are prefabricated piping assemblies designed to connect pipes of different diameters while maintaining system integrity and flow efficiency.
We are a professional reducing pipe spool manufacturer in China, supplying SS304L, 316L, and duplex S32205 reducing spools for oil & gas, chemical, marine, and industrial piping systems.
What is a Reducing Pipe Spool?
A reducing pipe spool is a prefabricated piping section that includes:
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Pipe segments of different diameters
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Reducers (concentric or eccentric)
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Flanges or welded ends
It is used to transition between different pipe sizes in a piping system.
Also known as
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reducing flanged spool
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reducer spool piece
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transition pipe spool
Types of Reducing Pipe Spools
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Flanged Reducing Pipe Spool (RF / FF / RTJ)
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Welded Reducing Spool
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Concentric Reducer Spool
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Eccentric Reducer Spool
Materials Available
We supply reducing pipe spools in:
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SS304 / 304L (ASTM A312 TP304L)
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SS316 / 316L (ASTM A312 TP316L)
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Duplex Stainless Steel S32205 (2205)
👉 Suitable for corrosion-resistant and high-strength applications
Reducing Pipe Spool Fabrication Process
Our reducing pipe spool fabrication follows strict quality control:
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Material verification (PMI)
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Cutting and beveling
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Fit-up and alignment
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Welding (TIG / MIG / SAW)
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NDT testing (RT / UT / PT)
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Dimensional inspection
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Pickling & passivation
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Final inspection
Inspection & Testing
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PMI (Positive Material Identification)
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Radiographic Testing (RT)
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Ultrasonic Testing (UT)
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Dye Penetrant Testing (PT)
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Hydrostatic testing
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Visual & dimensional inspection
Reducing Pipe Spool Specifications
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Size Range: DN15 – DN1200 (1/2″ – 48″)
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Reducer Type: Concentric / Eccentric
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Pressure Class: 150 – 2500
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Standards: ASME B16.5 / B31.3 / EN / DIN
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Surface: Pickling / passivation
Applications of Reducing Pipe Spools
Oil & Gas Industry
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Pipeline transitions
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Offshore piping systems
Chemical & Petrochemical
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Process piping systems
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Corrosive fluid transport
Marine & Shipbuilding
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Seawater piping
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Ship systems
Power & Industrial Systems
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Cooling water systems
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Industrial pipelines
Benefits of Reducing Flanged Pipe Spools
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Smooth transition between pipe sizes
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Reduced pressure loss
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Easy installation (prefabricated design)
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Lower on-site labor cost
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Improved system reliability
Concentric vs Eccentric Reducing Spool
| Type | Feature | Application |
|---|---|---|
| Concentric | Center aligned | Vertical piping |
| Eccentric | Offset center | Horizontal piping |
Related Products
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Stainless Steel Pipe Spool
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Pipe Reducers (ASTM A403)
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Weld Neck Flanges (ASTM A182)
FAQ
Q1: What is a reducing pipe spool?
A: It is a prefabricated piping assembly used to connect pipes of different diameters.
Q2: What is the difference between concentric and eccentric reducers?
A: Concentric reducers maintain centerline alignment, while eccentric reducers offset the center.
Q3: What materials are used for reducing pipe spools?
A: Common materials include 304L, 316L, and duplex stainless steel S32205.
Q4: Can reducing spools be customized?
A: Yes, they are fabricated according to drawings and project specifications.
