Views: 17 Author: Site Editor Publish Time: 2024-12-23 Origin: Site
ASME B16.11 socket weld pipe fittings are pipe fittings with a socket and a spigot structure, used to connect two pipes. The socket is one end of the pipe fitting, whose inner diameter is slightly larger than the outer diameter of the pipe, and is used to accommodate the inserted pipe; the spigot is the other end of the pipe fitting, whose outer diameter matches the inner diameter of the pipe, and can be inserted into the socket of another pipe or pipe fitting.
Socket weld pipe fittings are widely used in various industries, such as petroleum, chemical, pharmaceutical, water treatment and other industrial fields, as well as pipe connections in buildings and other structures.
ASME B16.11 Socket Weld Pipe Fittings Specification
Type | Elbow, Tee, Cross, Coupling, Cap, Lateral |
Size Range | 1/8"- 4" / DN6 - DN100 |
Pressure Rating | Class 3000LBS, 6000Lbs, 9000lbs. |
Carbon Steel | ASTM A105 / A105N, ASTM A350 LF2, A694 F42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A182 F11 / 12 / 22 / 5 / 9 / 91 / 92 / 22 |
Stainless Steel | ASTM A182 F304 / 304L / 304H, 316 / 316L, 321, 310S, 317, 347, 904L |
Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
Standard Scope
ASME B16.11 socket weld pipe fittings 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 combi-nations of socket-welding and threaded ends.
Special Fittings.
Fittings with special dimensions,threads,or counter bores 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).
Tolerance for Socket Weld Pipe Fittings
TOLERANCES FOR SW FITTINGS | ||||||||||
Nominal Size | All Fittings | Elbows, | Couplings | Half- | Reducer Inserts | Unions | ||||
Socket | Bore Dia. of | Center to | Laying | Laying | Laying | Shank Dia. | Length | Laying | ||
DN | NPS | B | D |
| E | F | A | SD | SL | E |
6~8 | 1/8~1/4 | +0.4 | +1.5 | ±1.0 | ±1.5 | ±1.0 | +1.5 | ±0.25 | 0 | ±1.5 |
10~20 | 3/8~3/4 | +0.4 | +1.5 | ±1.5 | ±3.0 | ±1.5 | +1.5 | ±0.25 | 0 | ±3.0 |
25~40 | 1~11/2 | +0.4 | +1.5 | ±2.0 | ±4.0 | ±2.0 | +2.0 | ±0.25 | 0 | ±4.0 |
50 | 2 | +0.5 | +1.5 | ±2.0 | ±4.0 | ±2.0 | +2.0 | ±0.5 | 0 | ±4.0 |
65~80 | 21/2~3 | +0.5 | +3.0 | ± 2.5 | ±5.0 | ±2.5 | +2.5 | ±0.5 | 0 | ±5.0 |
100 | 4 | +0.5 | +3.0 | ±2.5 | ±5.0 | ±2.5 | +2.5 | ±0.7 | 0 | - |
Types of Socket Weld Pipe Fittings
Socket Weld Fittings types include Elbow , Tee, Cross, Coupling, Union, Cap .
●90 Degree Socket Weld Elbow: It is the most common type of socket elbow in ASME B16.11 socket weld pipe fittings, used to achieve right-angle turns in pipes.
●45 Degree Socket Weld Elbow: The bending angle is 45 degrees, and it is often used in places where a smaller angle turn is required in the pipe system. It can make the direction of the pipe smoother and reduce the resistance of the fluid in the pipe.
●Socket Weld Tee: There are straight tees and reducing tees. The three interfaces of the straight tee are perpendicular to each other, and are used to divide a main pipe into two branches or merge two branches into one main pipe; the interface of the reducing tee has a certain angle, which is suitable for branch connections at some special angles.
●Socket Weld Cross : Used to connect four pipes to realize multi-directional branching or confluence of pipes. In some complex industrial pipe networks, cross fittings can be used to connect pipes in different directions so that the fluid can flow along a predetermined path.
●Socket Weld Coupling : The coupling is a pipe fitting used to connect two pipes, usually made of metal or plastic. Its structural characteristics are that one end is a socket and the other end is a spigot.
●Socket Weld Cap : A pipe cap is a ASME B16.11 socket weld pipe fitting used to close the end of a pipe. It has a simple structure, one end is open and is used to be put on the end of the pipe, and the other end is a closed end.
●Socket Weld Union : A union is a pipe connector that can be easily disassembled and assembled, consisting of a male connector, a female connector and a sealing gasket.
ASME B16.11 SW Pipe Fittings Structural features
Good sealing performance: Sealing materials such as rubber sealing rings, sealants, etc. are usually used to seal the socket weld pipe fittings. This sealing structure can effectively prevent the leakage of the medium in the pipeline and ensure the sealing of the pipeline system.
Easy installation: The connection method of the socket weld pipe fittings is relatively simple and does not require complex welding or thread processing equipment. During the installation process, you only need to insert the pipe into the socket and then fix it in a certain way, which greatly saves installation time and cost.
Strong removability: Compared with welded pipe fittings, ASME B16.11 socket weld pipe fittings have better removability. When the pipeline system needs to be repaired, replaced or modified, the spigot fittings can be easily disassembled without causing significant damage to the pipeline.
