Butt Welded Reducer BW Fittings Specifications
Butt welded reducers can be concentric (COC) reducer and eccentric (ECC) reducer.These reducers have same functions,the only difference is the internal structure.There are the BW fittings specifications in the content below.
Butt welded (BW) reducer is a commonly used pipe fittings in many industries.Butt welded fittings are including Elbow, Tee, Cross, Bend, Reducer, Cap, Stub End.You could find the BW fittings specifications below.
The end of Butt welded fittings are connected to the pipe system by butt welding.Butt weld fittings provide permanent leak-proof performance.BW fittings could made from seamless or welded pipe,and then through several processes formed to get the shape of pipe fittings.
BW reducer has two types:Concentric and Eccentric
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.
Eccentric reducers have different end sizes and are used to connect pipes with different diameters on the same axis.
ECC Reducer VS COC Reducer
- The joint effect of the two is that the diameter change needs to change from one specification to another.
- Concentric reducer is conducive to fluid flow, and the interference to fluid flow state is small when the diameter is reduced. Therefore, concentric reducers are used for gas and vertical flow liquid pipelines;
- One side of the eccentric reducer is flat, which is convenient for exhaust or liquid discharge, startup and maintenance. Therefore, eccentric reducer is generally used for horizontal liquid pipeline.
|Shape||Elbow, Tee, Cross, Bend, Reducer, Cap, Stub End|
|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|
|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|