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Type: 90 Degree and 45 Degree
Shape: Straight and Reducing Elbow
Size: 1/8” – 4” / DN6 - DN100
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ASME B16.11 forged socket weld elbow is available in 90 degree and 45 degree that used to connect the ASME pipe to fittings or valves by fillet seal welding. The weight is light due to small size dimensions. And has varieties of features such as reliability, durability and dimensional precision. There are 3 pressure ratings that Class 3000, 6000 and 9000.
Class 3000 Elbow: for using with Sch 80 steel pipe.
Class 6000 Elbow: for matching with Sch 160 steel pipe.
Class 9000 Elbow: for connecting with Sch XXS steel pipe
Socket Weld Fittings are a family of high pressure forging fittings that used only in conjunction with ANSI Pipe and are available in the same size range.
Even though there are some similarities between the shapes of the two welds, but socket weld is still considered to be different from a fillet weld.
Specification of Socket Weld Fittings ASME B16.11
Shape | Straight and Reducing Fittings |
Size Range | 1/8" - 4" / DN6 - DN100 |
Pressure Rating | Class 3000lbs, 6000lbs, 9000lbs |
Standard | ASME B16.11, BS3799 |
Carbon Steel | ASTM A105 / A105N, ASTM A350 LF2/LF3, A694 F42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A182 F11 / F12 / F5 / F9 / F91 / F92 / F22 |
Stainless Steel | ASTM A182 F304/304L/304H, F316/316L, F310S, F317, F347, F904L |
ASME B16.11 Standard Scope
This Standard covers ratings, dimensions, tolerances, marking, and material requirements for forged fittings, both socket-welding and threaded, as illustrated in Tables 1 through 5 and Tables I-1 through I-5, inclusive.
Fitting Types/Configuration.
Types of fittings covered by this Standard are shown in Table 6, by class and size range. Fittings shown in Tables 1 through 5 and Tables I-1 through I-5 may also be made with combinations of socket-welding and threaded ends.
Special Fittings.
Fittings with special dimensions, threads, or counterbores may be made by agreement between the manufacturer and purchaser. When such fittings meet all other stipulations of this Standard, they shall be considered in compliance therewith, provided they are appropriately marked (see section 4).
Welding.
Installation welding requirements are not within the scope of this Standard. Installation welding shall be in accordance with the applicable piping Code or regulation covering the piping system into which the fittings are installed.
Marking and Inspection of Galvanized Socket Weld Elbow
Package of Socket Weld Elbow Fittings
Pack all SW elbows in cartons.
Stick label on all cartons.
Put cartons into wooden box.
Make shipping mark on wooden box.
ASME B16.11 Socket Weld Elbow Dimensions
DN | NPS | B | G | C | |||||||
3000 | 6000 | 9000 | 3000 | 6000 | 9000 | ||||||
ave | min | ave | min | ave | min | ||||||
6 | 1/8 | 10.9 | 2.41 | 3.15 | - | 3.18 | 3.18 | 3.96 | 3.43 | - | - |
8 | 1/4 | 14.3 | 3.02 | 3.68 | - | 3.78 | 3.30 | 4.60 | 4.01 | - | - |
10 | 3/8 | 17.7 | 3.20 | 4.01 | - | 4.01 | 3.50 | 5.03 | 4.37 | - | - |
15 | 1/2 | 21.9 | 3.73 | 4.78 | 7.47 | 4.67 | 4.09 | 5.97 | 5.18 | 9.53 | 8.18 |
20 | 3/4 | 27.3 | 3.91 | 5.56 | 7.82 | 4.90 | 4.27 | 6.96 | 6.04 | 9.78 | 8.56 |
25 | 1 | 34.0 | 4.55 | 6.35 | 9.09 | 5.69 | 4.98 | 7.92 | 6.93 | 11.38 | 9.96 |
32 | 11/4 | 42.8 | 4.85 | 6.35 | 9.70 | 6.07 | 5.28 | 7.92 | 6.93 | 12.14 | 10.62 |
40 | 11/2 | 48.9 | 5.08 | 7.14 | 10.15 | 6.35 | 5.54 | 8.92 | 7.80 | 12.70 | 11.12 |
50 | 2 | 61.2 | 5.54 | 8.74 | 11.07 | 6.93 | 6.04 | 10.92 | 9.50 | 13.84 | 12.12 |
65 | 21/2 | 73.9 | 7.01 | - | - | 8.16 | 7.62 | - | - | - | - |
80 | 3 | 89.9 | 7.62 | - | - | 9.52 | 8.30 | - | - | - | - |
100 | 4 | 115.5 | 8.56 | - | - | 10.69 | 9.35 | - | - | - | - |
1) The even thickness around the socket bore shall not be less than the average value, the thickness at partial areas can be the min. one.
2) Considering the tolerance of outside diameter of pipe, the diameters of some socket bore can be a little larger than the ones specified in B16.11.
3) When the sizes of the connecting pipes are not conformed to the ones specified in this catalog, the sizes of the connecting pipes shall be provided in the purchase specification.
4) When the fittings are reducing,the structure sizes shall be same as the ones of the straight fittings and B J D shall be machined per the according reducing ends.
5) Fitting can also be manufactured as the mixed connectings of SW and THRD.
Socket Weld Elbow Weight Chart in KG
NOMINAL SIZE | SW 90 DEGREE ELBOW | SW 45 DEGREE ELBOW | |||||
DN | NPS | 3000 | 6000 | 9000 | 3000 | 6000 | 9000 |
6 | 1/8 | 0.09 | 0.15 | - | 0.08 | 0.16 | - |
8 | 1/4 | 0.09 | 0.15 | - | 0.08 | 0.16 | - |
10 | 3/8 | 0.12 | 0.32 | - | 0.12 | 0.28 | |
15 | 1/2 | 0.26 | 0.40 | 0.85 | 0.22 | 0.30 | 0.78 |
20 | 3/4 | 0.35 | 0.65 | 1.48 | 0.28 | 0.72 | 1.25 |
25 | 1 | 0.52 | 1.25 | 2.20 | 0.55 | 0.90 | 1.85 |
32 | 1 ¼ | 0.85 | 1.4 | 2.90 | 0.71 | 1.15 | 2.62 |
40 | 1 ½ | 1.05 | 2.35 | 3.50 | 0.89 | 1.90 | 3.45 |
50 | 2 | 1.75 | 2.96 | 4.35 | 1.30 | 2.95 | 5.80 |
65 | 2 ½ | 2.80 | - | - | 2.68 | - | - |
80 | 3 | 4.60 | - | - | 4.90 | - | - |
100 | 4 | 9.60 | - | - | 8.80 | - | - |
Socket Weld Advantages and Disadvantages
Advantages
• The pipe needs to be beveled in preparation for welding.
• Temporary tack welding is generally not required for alignment because the principles in fitting ensure proper alignment.
• The socket weld metal is unable to penetrate the bore of the pipe.
• Construction costs have been found to be lower than those of butt-welded joints due to the elimination of special machines and the lack of exact fit-up requirements.
Disadvantages
• The welder should ensure that the expansion gap between the socket shoulder and the pipe is 1.6mm.
• The presence of internal crevices and expansion gaps in socket weld systems can promote corrosion. As a result, they are considered less suitable for radioactive or corrosive applications.
• These types of fittings are also not suitable for Ultra High Hydrostatic Pressure in food industries. This is because, in addition to not allowing full penetration, they also leave crevices and gaps that are difficult to clean.
Application fields
The socket elbow is a pipe connector with a socket at one end and a spigot at the other end, which is connected by the cooperation of the socket and the spigot. This connection method has good sealing and is easy to install, so it is widely used in many fields:
● Building water supply and drainage system
● Chemical industry
● Chemical production equipment
● Chemical storage facilities
● Power industry
● Thermal power plant
● Nuclear power plant
● Petroleum and natural gas industry
● Oil and gas extraction
● Long-distance pipelines
● Production equipment pipelines
● Storage and transportation systems
ASME B16.11 forged socket weld elbow is available in 90 degree and 45 degree that used to connect the ASME pipe to fittings or valves by fillet seal welding. The weight is light due to small size dimensions. And has varieties of features such as reliability, durability and dimensional precision. There are 3 pressure ratings that Class 3000, 6000 and 9000.
Class 3000 Elbow: for using with Sch 80 steel pipe.
Class 6000 Elbow: for matching with Sch 160 steel pipe.
Class 9000 Elbow: for connecting with Sch XXS steel pipe
Socket Weld Fittings are a family of high pressure forging fittings that used only in conjunction with ANSI Pipe and are available in the same size range.
Even though there are some similarities between the shapes of the two welds, but socket weld is still considered to be different from a fillet weld.
Specification of Socket Weld Fittings ASME B16.11
Shape | Straight and Reducing Fittings |
Size Range | 1/8" - 4" / DN6 - DN100 |
Pressure Rating | Class 3000lbs, 6000lbs, 9000lbs |
Standard | ASME B16.11, BS3799 |
Carbon Steel | ASTM A105 / A105N, ASTM A350 LF2/LF3, A694 F42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A182 F11 / F12 / F5 / F9 / F91 / F92 / F22 |
Stainless Steel | ASTM A182 F304/304L/304H, F316/316L, F310S, F317, F347, F904L |
ASME B16.11 Standard Scope
This Standard covers ratings, dimensions, tolerances, marking, and material requirements for forged fittings, both socket-welding and threaded, as illustrated in Tables 1 through 5 and Tables I-1 through I-5, inclusive.
Fitting Types/Configuration.
Types of fittings covered by this Standard are shown in Table 6, by class and size range. Fittings shown in Tables 1 through 5 and Tables I-1 through I-5 may also be made with combinations of socket-welding and threaded ends.
Special Fittings.
Fittings with special dimensions, threads, or counterbores may be made by agreement between the manufacturer and purchaser. When such fittings meet all other stipulations of this Standard, they shall be considered in compliance therewith, provided they are appropriately marked (see section 4).
Welding.
Installation welding requirements are not within the scope of this Standard. Installation welding shall be in accordance with the applicable piping Code or regulation covering the piping system into which the fittings are installed.
Marking and Inspection of Galvanized Socket Weld Elbow
Package of Socket Weld Elbow Fittings
Pack all SW elbows in cartons.
Stick label on all cartons.
Put cartons into wooden box.
Make shipping mark on wooden box.
ASME B16.11 Socket Weld Elbow Dimensions
DN | NPS | B | G | C | |||||||
3000 | 6000 | 9000 | 3000 | 6000 | 9000 | ||||||
ave | min | ave | min | ave | min | ||||||
6 | 1/8 | 10.9 | 2.41 | 3.15 | - | 3.18 | 3.18 | 3.96 | 3.43 | - | - |
8 | 1/4 | 14.3 | 3.02 | 3.68 | - | 3.78 | 3.30 | 4.60 | 4.01 | - | - |
10 | 3/8 | 17.7 | 3.20 | 4.01 | - | 4.01 | 3.50 | 5.03 | 4.37 | - | - |
15 | 1/2 | 21.9 | 3.73 | 4.78 | 7.47 | 4.67 | 4.09 | 5.97 | 5.18 | 9.53 | 8.18 |
20 | 3/4 | 27.3 | 3.91 | 5.56 | 7.82 | 4.90 | 4.27 | 6.96 | 6.04 | 9.78 | 8.56 |
25 | 1 | 34.0 | 4.55 | 6.35 | 9.09 | 5.69 | 4.98 | 7.92 | 6.93 | 11.38 | 9.96 |
32 | 11/4 | 42.8 | 4.85 | 6.35 | 9.70 | 6.07 | 5.28 | 7.92 | 6.93 | 12.14 | 10.62 |
40 | 11/2 | 48.9 | 5.08 | 7.14 | 10.15 | 6.35 | 5.54 | 8.92 | 7.80 | 12.70 | 11.12 |
50 | 2 | 61.2 | 5.54 | 8.74 | 11.07 | 6.93 | 6.04 | 10.92 | 9.50 | 13.84 | 12.12 |
65 | 21/2 | 73.9 | 7.01 | - | - | 8.16 | 7.62 | - | - | - | - |
80 | 3 | 89.9 | 7.62 | - | - | 9.52 | 8.30 | - | - | - | - |
100 | 4 | 115.5 | 8.56 | - | - | 10.69 | 9.35 | - | - | - | - |
1) The even thickness around the socket bore shall not be less than the average value, the thickness at partial areas can be the min. one.
2) Considering the tolerance of outside diameter of pipe, the diameters of some socket bore can be a little larger than the ones specified in B16.11.
3) When the sizes of the connecting pipes are not conformed to the ones specified in this catalog, the sizes of the connecting pipes shall be provided in the purchase specification.
4) When the fittings are reducing,the structure sizes shall be same as the ones of the straight fittings and B J D shall be machined per the according reducing ends.
5) Fitting can also be manufactured as the mixed connectings of SW and THRD.
Socket Weld Elbow Weight Chart in KG
NOMINAL SIZE | SW 90 DEGREE ELBOW | SW 45 DEGREE ELBOW | |||||
DN | NPS | 3000 | 6000 | 9000 | 3000 | 6000 | 9000 |
6 | 1/8 | 0.09 | 0.15 | - | 0.08 | 0.16 | - |
8 | 1/4 | 0.09 | 0.15 | - | 0.08 | 0.16 | - |
10 | 3/8 | 0.12 | 0.32 | - | 0.12 | 0.28 | |
15 | 1/2 | 0.26 | 0.40 | 0.85 | 0.22 | 0.30 | 0.78 |
20 | 3/4 | 0.35 | 0.65 | 1.48 | 0.28 | 0.72 | 1.25 |
25 | 1 | 0.52 | 1.25 | 2.20 | 0.55 | 0.90 | 1.85 |
32 | 1 ¼ | 0.85 | 1.4 | 2.90 | 0.71 | 1.15 | 2.62 |
40 | 1 ½ | 1.05 | 2.35 | 3.50 | 0.89 | 1.90 | 3.45 |
50 | 2 | 1.75 | 2.96 | 4.35 | 1.30 | 2.95 | 5.80 |
65 | 2 ½ | 2.80 | - | - | 2.68 | - | - |
80 | 3 | 4.60 | - | - | 4.90 | - | - |
100 | 4 | 9.60 | - | - | 8.80 | - | - |
Socket Weld Advantages and Disadvantages
Advantages
• The pipe needs to be beveled in preparation for welding.
• Temporary tack welding is generally not required for alignment because the principles in fitting ensure proper alignment.
• The socket weld metal is unable to penetrate the bore of the pipe.
• Construction costs have been found to be lower than those of butt-welded joints due to the elimination of special machines and the lack of exact fit-up requirements.
Disadvantages
• The welder should ensure that the expansion gap between the socket shoulder and the pipe is 1.6mm.
• The presence of internal crevices and expansion gaps in socket weld systems can promote corrosion. As a result, they are considered less suitable for radioactive or corrosive applications.
• These types of fittings are also not suitable for Ultra High Hydrostatic Pressure in food industries. This is because, in addition to not allowing full penetration, they also leave crevices and gaps that are difficult to clean.
Application fields
The socket elbow is a pipe connector with a socket at one end and a spigot at the other end, which is connected by the cooperation of the socket and the spigot. This connection method has good sealing and is easy to install, so it is widely used in many fields:
● Building water supply and drainage system
● Chemical industry
● Chemical production equipment
● Chemical storage facilities
● Power industry
● Thermal power plant
● Nuclear power plant
● Petroleum and natural gas industry
● Oil and gas extraction
● Long-distance pipelines
● Production equipment pipelines
● Storage and transportation systems
