Butt welding reducers-concentric reducers,eccentric reducers
Butt welding reducers are one of the most used butt welding pipe fittings,which are used to connect pipes of two different diameters to adjust the fluid rate and speed.According to the shape it can be divided into concentric reducer and eccentric reducer.
A concentric reducer allows for connecting a large pipe to a smaller pipe by means of welding.A concentric reducer allows welded connection between two pipes with the same center line or alignment.
The butt welding reducers are made from the steel pipes directly for the common size. The bigger size more than 24 inches,will be manufactured from the steel plate.
An eccentric reducer allows for welding a large pipe to a smaller pipe with an offset center line.Because of its shape,the eccentric reducer is always used in horizontal piping systems.
The price of the concentric reducer is cheaper than the eccentric reducer and concentric reducer is easy to install than eccentric reducer for not to consider the alignment.
Specifications of butt welding concentric reducers and eccentric reducers:
Size: 3/4 inches x 1/2 inches-48 inches x 40 inches
Wall thickness: SCH5,SCH10,SCH20,SCH30,SCH STD,SCH40,SCH60,SCH XS,SCH80,SCH100,SCH120,SCH140, SCH160,XXS,or custom thickness
Standards of butt welding reducers:
- ANSI/ASME B16.9-Factory made wrought steel butt welding fittings,includes elbows,tees,reducers,caps dimensions.
DIN EN standard:
- DIN EN 10253-Butt welding pipe fittings,elbows,return bends,concentric and eccentric reducers,equal and reducing tees,and caps
- GOST 17378-Carbon and low-alloy steel butt-welding fittings,reducer
- GOST 17380-Carbon and low-alloy steel butt-welding fittings General specifications
- JIS B2311-Steel butt welding pipe fittings for ordinary use.
- JIS B2312-Steel butt welding pipe fittings
- JIS B2313-Steel plate butt welding pipe fittings
- KS B1522-Steel butt welding pipe fittings for ordinary use and Fuel Gas.
- KS B1541-Steel butt welding pipe fittings.
- KS B1543-Steel plate butt welding pipe fittings.
- MSS SP-43-Wrought stainless steel butt welding fittings.
- MSS SP-75-Specification for high test wrought butt welding fittings.
- GB/T 12459-Steel butt welding pipe fittings
- GB/T 13401-Steel plate butt welding pipe fittings
- SH/T 3408-Steel butt welding pipe fittings
- HGJ528-Steel butt welded pipe fittings
- SY/T0510-Steel butt welding pipe fittings
Materials of butt welding reducers:
Carbon steel: ASTM A234 WPB,ASTM A234 WPC,ASTM A420 WPL6,MSS SP-75 WPHY42,WPHY52,WPHY60, WPHY65,WPHY70,S235,S355,ST37.2,SS400,GOST CT20,etc.
Stainless steel: ASTM A403,ASTM A312,WP304,WP304L,WP316,WP316L,etc.
Alloy steel: ASTM A234 WP1,WP5,WP9,WP11,WP22,WP91,ASTM A860 WPL6,etc.
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