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316L Stainless Steel Eccentric Reducer

316L Stainless Steel Eccentric Reducer

Eccentric reducer is a standard butt-weld fitting for industrial piping systems. It joins pipes of different nominal diameters for a smooth bore transition. Unlike symmetrical concentric reducers, its two end centers are offset with one flat sidewall, engineered specifically for horizontal piping applications.
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Description

Zhejiang Daye Flange Co., Ltd. is one of the leading manufacturers and suppliers of 316l stainless steel eccentric reducer in China. With abundant experience, we are committed to providing high quality flanges made in China with competitive price. We warmly welcome you to buy durable 316l stainless steel eccentric reducer in stock here from our factory. Also, quotation is available.

 

Eccentric reducer is a standard butt-weld fitting for industrial piping systems. It joins pipes of different nominal diameters for a smooth bore transition. Unlike symmetrical concentric reducers, its two end centers are offset with one flat sidewall, engineered specifically for horizontal piping applications.
The 316L stainless steel eccentric reducer delivers four core functions: seamless diameter transition between pipes; flat-bottom alignment to prevent liquid pooling and enable full drainage of horizontal lines; flat-top configuration to avoid air entrapment and reduce cavitation risk; and consistent top/bottom pipe elevation to simplify mounting on horizontal supports.
Our 316L eccentric reducers follow rigorous quality controls: fully traceable genuine raw materials across the entire supply chain, optimized processing for enhanced corrosion resistance, tight manufacturing precision, and full dimensional inspection on every unit before shipment.

 

Parameters

 

 

Standard:

GB/T12459, SH/T3408, EN10253-2, EN 10253-4, MSS SP-75, MSS SP-43

Size:

Seamless:1/2"-24"(DN15-DN600)

Thickness:

SCH5S-XXS

Grade:

Stainless steel: 304/304L, 316/316L, 321,316Ti, 347/347H, 310S

Super stainless steel: 254SMO/F44, 904L

Duplex steel: F51/2205,F53/2507

Special alloy steel:Inconel(625, 600, 718, 750, 601),

Hastelloy(276, C-22, C-4, C, X, B-2), Monel(400, 500), Incoloy(800, 825, 020, 028, 925),etc

 

Product Advantage

 
 
 
 
 
 
 
  • Eliminates fluid entrapment risks
  • Reduces flow resistance
  • Enhances mounting compatibility

 

Applications

 

Horizontal transmission pipelines for crude oil, refined petroleum products and corrosive chemical media.

Seawater desalination, wastewater treatment and reverse osmosis (RO) water purification systems.

Horizontal diameter-transition piping in district heating networks and cooling circulating water systems.

 

FAQ

 

 

Q: What should I do if air or liquid accumulation occurs due to incorrect installation orientation?

A: Confirm the installation orientation strictly based on the conveying medium. Apply the flat-on-bottom (FOB) design for horizontal liquid piping to ensure complete drainage; adopt the flat-on-top (FOT) design for pump suction lines and gas/steam piping to ensure proper air venting. For vertical piping runs, concentric reducers are the preferred option.

Q: What should I do if air or liquid accumulation occurs due to incorrect installation orientation?

A: Use dedicated welding consumables such as ER316L that match the base material. Apply pickling and passivation treatment to the weld seam after welding to restore the surface passivation film. Control the welding heat input to avoid grain coarsening.

Q: What should I do if butt joint misalignment exceeds tolerance due to dimensional deviation?

A: Specify the applicable standard and wall thickness schedule (SCH number) at the procurement stage. Verify the outer diameter, wall thickness and bevel type of both end openings before installation. Replace the fitting or rework the bevel if deviations are out of tolerance.

Q: How to reduce turbulence noise and pressure loss at the reducer transition?

A: Limit the single-stage diameter reduction ratio to no more than 3:1. For large reduction ratios, adopt multi-stage reducers for gradual transition. Prioritize standard-length reducers to ensure a smooth bore transition.

Q: Is there a risk of substandard materials being used in 316L stainless steel eccentric reducers?

A: We only use prime quality 316L tube billets from leading steel mills. Each batch of raw material comes with the original Mill Test Certificate (MTC) and undergoes 100% spectrometric re-inspection upon receipt. We strictly control carbon content at ≤ 0.03% and ensure molybdenum content meets specifications, eliminating recycled and non-standard materials at the source.Our 316L stainless steel eccentric reducers are guaranteed.

 

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