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Concentric BW Reducer Welded Fittings

Concentric BW reducer is one type of butt welded fittings.BW reducers can be concentric (COC) reducer and eccentric (ECC) reducer.These reducers have same functions,the only difference is the internal structure.

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Concentric BW reducer is more commonly used than eccentric reducer.BW reducers can be seamless and welded.For large size,there is only welded fittings.

 

Product description

The two ends of concentric reducer are designed with large diameter and small diameter, and the pipe is connected through conical transition section on the same axis.

 

Product features

  • Concentric reducers will change kindly between the pump and piping.
  • Concentric reducers are tapered and are used when the diameter between pipes changes.
  • Concentric reducers provide an in-line conical transition between pressurized pipes of different diameters.
  • The length dimension of the reducer is almost equal to the average of the big bore and smaller bore pipe diameters.

 

SPECIFICATION

Shape  Reducer
Size Range 1/2″ – 80″ / DN15 – 2000
Thickness Schedule SCH 10,SCH 10S, SCH 20, SCH 40,SCH 40S, STD, XS,SCH 80, SCH 80S, SCH 100, SCH 120, SCH 160, XXS
China Standard GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409
America Standard ANSI / ASME B16.9 / MSS SP 43
apan Standard JIS B2311/2312/2313
Europe Standard EN10253
Carbon Steel Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC
Low Temp Carbon Steel Q345B, 16Mn, ASTM A420 WPL6
Pipeline Steel ASTM A860 WPHY 42 / 46 / 56 / 60 / 65
Alloy Steel ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92,15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5
Stainless Steel ASTM A403 WP304/304L/304H, 316/316L, 310S, 321, 317,347,904L
Duplex Stainless Steel ASTM A815 S32205, S31803, 32750, 32760

 

 

Applications

  • Concentric reducers are easy to transport mud and grinding fluid and are suitable for corrosive operations
  • Concentric reducers are used to connect pipe segments or pipe segments on the same axis.
  • Concentric reducers are beneficial to use where different ratings and to wear protection is required in conveying between flangesor pipes.
  • Concentric reducers are perfectly suitable to use in the exclusion of the pump.
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