Sizes of butt welding fitting
The welded fittings (elbows a reducers) are mainly used as part of the piping systems in building and power industries.
Allowed sizes and shapes tolerances of butt welding fittings
– outside diameter x wall thickness (OD x WT):- Tab35
- elbows for elevated temperature *
- elbows for general use *
- elbows for low temperature *
- elbows for pipe line *
- elbows for room temperature service *
- elbows for water and gas pipe line *
- fine grain steel elbows *
Dimensions of reducers – Type K
– outside diameter x wall thickness (OD x WT):- 26.9 x 2.3 – 114.3 x 3.60 mm [20 – 100 DN] [3/4 – 4 NPS]
- butt welding reducers *
Dimensions of long radius elbows and returns according to standard ASME B16.9
– outside diameter x wall thickness (OD x WT):- 33.4 x 3.38 – 114.3 x 6.02 mm [1.315 x 0.133 – 4.5 x 0.237 in] [1 – 4 NPS]
- elbows for elevated temperature *
- elbows for low temperature *
Dimensions of elbows according to european standards
– outside diameter x wall thickness (OD x WT):- 21.3 x 2.0 – 168.3 x 4.50 mm [15 – 150 DN] [1/2 – 6 NPS]
- elbows for elevated temperature *
- elbows for general use *
- elbows for low temperature *
- elbows for pipe line *
- elbows for room temperature service *
- elbows for water and gas pipe line *
- fine grain steel elbows *
