Reducer

Smooth Pipe Diameter Transition | Concentric & Eccentric Types

أنبوب reducers deliver smooth bore transition between pipes of different diameters, preserving flow stability and reducing turbulence across the piping system. We supply concentric reducers for vertical pipe runs and eccentric reducers for horizontal lines that require flat bottom alignment.

Available in carbon steel, stainless steel, alloy steel, and duplex stainless steel. All products are manufactured to standards with strict control over dimensional tolerances.

Core Advantages of Pengrun Reducer

Smooth bore, low flow turbulence

Concentric & eccentric types

Seamless & welded options

Multiple Materials Options

Precise tolerance, easy fit-up

فئة المنتجات
Industries
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    Carbon Steel Seamless Concentric Reducer, A234 WPB, ASME B16.9

    Quick Selection Guide

    Seamless for high-pressure & high-temperature lines

    Welded for low-medium pressure large-diameter pipes

    Eccentric: flat down for liquid, flat up for gas

    Confirm bore sizes & wall schedules before ordering

    Installation Tips

    Align pipe axes to avoid welding stress

    Match wall thickness for smooth fit-up

    Preheat thick-wall reducers per WPS

    Post-weld NDT available for high-pressure lines

    Core Selection Comparison: Concentric VS Eccentric Reducer

    Item مخفض متحد المركز مخفض غريب الأطوار
    Structure Centered symmetrical bore Offset bore, one flat side
    Installation Vertical piping systems Horizontal piping systems
    Flow state Uniform flow, low turbulence Slight turbulence at flat side
    Core value Centralized diameter reduction Prevents liquid / air accumulation
    Typical use Pump suction risers, vertical mains Horizontal process lines, drainage pipes

    FAQs

    How do I choose between concentric and eccentric reducer?

    Concentric for vertical piping; eccentric for horizontal lines to avoid fluid or air accumulation.

    Why not use concentric reducer in horizontal pipelines?

    It causes liquid pooling or air pockets, disrupting flow and increasing corrosion risk.

    What’s the difference between seamless and welded reducer?

    Seamless for high-pressure & high-temperature lines; welded for low-medium pressure large-diameter pipes.

    Which reducer fits pump suction piping?

    Eccentric reducer (flat side up), which prevents air lock and protects pump performance.

    Can you make non-standard size reducers?

    Yes, custom bore ratios, wall thicknesses and special lengths are supported.

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