| NPS | Minimum Length E | Minimum Hex Height J | Nominal F |
| 1/2 | 14 | 8 | 22 |
| 3/4 | 16 | 10 | 27 |
| 1 | 19 | 10 | 35 |
| 1¼ | 21 | 14 | 44.5 |
| 1½ | 21 | 16 | 51 |
| 2 | 22 | 18 | 63.5 |
| 2½ | 27 | 19 | 76 |
| 3 | 28 | 21 | 89 |
| 4 | 32 | 25 | 117.5 |
Dimensions are in millimeters unless otherwise indicated.
Dimensions Square head Plugs - NPS 1/2 to 4 - ASME B16.11
| NPS | Minimum Length E | Minimum Square Height C | Minimum Width Flats B |
| 1/2 | 14 | 10 | 14 |
| 3/4 | 16 | 11 | 16 |
| 1 | 19 | 13 | 21 |
| 1¼ | 21 | 14 | 24 |
| 1½ | 21 | 16 | 28 |
| 2 | 22 | 18 | 32 |
| 2½ | 27 | 19 | 36 |
| 3 | 28 | 21 | 41 |
| 4 | 32 | 25 | 65 |
Dimensions are in millimeters unless otherwise indicated.
Dimensions Round head Plugs - NPS 1/2 to 4 - ASME B16.11
| NPS | Minimum Length A | Nominal Head Diameter D | Minimum Length E |
| 1/2 | 44 | 21 | 14 |
| 3/4 | 44 | 27 | 16 |
| 1 | 51 | 33 | 19 |
| 1¼ | 51 | 43 | 21 |
| 1½ | 51 | 48 | 21 |
| 2 | 64 | 60 | 22 |
| 2½ | 70 | 73 | 37 |
| 3 | 70 | 89 | 28 |
| 4 | 76 | 114 | 32 |
Dimensions are in millimeters unless otherwise indicated.
Applications of Buttweld Fittings
A piping system using buttweld fittings has many inherent advantages over other forms.
- Welding a fitting to the pipe means it is permanently leakproof
- The continuous metal structure formed between pipe and fitting adds strength to the system
- Smooth inner surface and gradual directional changes reduce pressure losses and turbulence
and minimize the action of corrosion and erosion - A welded system utilizes a minimum of space
Bevelled Ends
The ends of all buttweld fittings are bevelled, exceeding wall thickness 4 mm for austenitic stainless steel, or 5 mm for ferritic stainless steel. The shape of the bevel depending upon the actual wall thickness. This bevelled ends are needed to be able to make a "Butt weld".
| Image of typical bevel types. |
ASME B16.25 covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements for welding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and dimensional tolerances). These weld edge preparation requirements are also incorporated into the ASME standards (e.g., B16.9, B16.5, B16.34).
Material and Performance
The most common materials used in fittings produced is carbon steel, stainless steel, cast iron, aluminium, copper, glass, rubber, the various types of plastics, etc..
In addition, fittings, like pipes, for specific purposes sometimes internally equipped with layers of materials of a completely different quality as the fitting themselves, which are "lined fittings".
The material of a fitting is basically set during the choice of the pipe, in most cases, a fitting is of the same material as the pipe.
ASME B 16.11THD 90 degree forged elbow 2-1/2" class2000
| size | 2-1/2" |
| pressure | class2000 |
| material | ASTM A 182 F1 |
| shape | round |
| ApplicationFields | petroleumrefining& chemical engineering, nuclear power engeering, aerospace industry special pressure quuipment , coal processing engineering, thermal power plant, |
| processingtechnology | forging |
| quality guarantee period: | 2 years |
| brand | GEE |
| certificate | API ,ISO,BV,ABS |
| origin country | CHINA |
| standard | ASTM B 16.11 |
standard package:
drawing:
Dimensions threaded elbows - 90°/45° - NPS 1/2 to 4 - 2000 LBS - ASME B16.11
