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socket weld pipe fittings specifications

socket weld pipe fittings specifications

AUTHOR : _ _ Date : 3/4/2013 10:38:03 PM
 A socket weld fitting is unthreaded, but has large sockets at both ends to accept a pipe end. The fitting is then permanently welded to the pipe. Socket weld connections fuse the fitting to the pipe, and are typically used for high-pressure pipe systems. A 90-degree socket-weld elbow can be specified in a number of sizes. 

Nominal Pipe Sizes
Class 3000 (Schedule 80)
socket-weld elbows can be specified for pipe sizes ranging from 1/4 inch to 4 inches in diameter. The higher-pressure Class 6000 (Schedule 160) elbows are manufactured in sizes ranging from 3/8 inch to 4 inches.

Socket and Bore Diameters
The socket diameter is the outside width of the socket; the bore diameter is the size of the opening through which the pipe must pass. Socket diameters can be specified in sizes ranging from .42 to 4.545 inches; bore diameters range from .269 to 4.026 inches. Dimension do not vary from Class 3000 to Class 6000 fittings.

Minimum Instillation Space Requirement
The amount of clearance that must be allowed for an elbow differs by the size of the fitting and the service class. For instance,
a 3/8-inch Class 3000 elbow must be installed in a space 1.1 inches in diameter, whereas a 3/8-inch Class 6000 elbow must be installed in a 1.3-inch space.

Distance to Inside Corner
Another important specification for
socket weld elbows is the distance from the outer edge of the socket bore to the point where the interior of the fitting bends. This distance can range from .08 inch in a 1/8-inch Class 3000 fitting, to 4.2 inches in a 4-inch fitting. The same distance in Class 6000 fittings is somewhat larger. For instance, a 4-inch fitting in this class measures 4.5 inches from edge of collar to interior bend.


• Check all kinds of pipe fittings
1. Elbow:
45 degree elbow
45D CS butt weld elbow    45D SS butt weld elbow   45D socket weld elbow   45D threaded elbow
90 degree elbow  
90D CS butt weld elbow    90D SS butt weld elbow   90D socket weld elbow
   90D threaded elbow     street elbow
180 degree elbow  
180D CS butt weld elbow      180D SS butt weld elbow

2. Tee:
CS butt weld straight tee   CS butt weld reducing tee   SS butt weld straight tee  SS butt weld reducing tee  socket weld tee   threaded tee
   Lateral tee:
CS butt weld lateral tee   SS butt weld lateral tee   socket weld lateral tee   threaded lateral tee

3. Cross:
CS butt weld straight cross   CS butt weld reducing cross   SS butt weld straight cross   SS butt weld reducing cross   socket weld cross   threaded cross

4. Reducer:
CS concentric reducer   CS eccentric reducer  SS concentric reducer   SS eccentric reducer

5. Cap:
CS butt weld cap   SS butt weld cap   socket weld cap   threaded cap

6. Stub end:
CS stub end   SS stub end

7. Coupling:
socket weld full coupling   socket weld half coupling   threaded full coupling   threaded half coupling

8. Union:
socket weld union   threaded union

9. Socket insert:
A  B

10. Plug:
hex head plug   square head plug   round head plug

11. Bushing:
hex head bushing   flush bushing 

12. Nipple: 
TBE   PBE   TOE&POE   hex nipple

13. Swaged nipple:
concentric swage nipple   eccentric swage nipple

14. Flange:
Orifice flange   lap joint flange   threaded flange   socket weld flange   weld neck flange   blind flange   slip on flange   long weld neck flange   plate flange   large diameter flange   spectacle blind   square flange   

15. Outolet:
weldolet   socketolet   threadolet  laterolet  coupolet  elolet   nipoflange   nipolet

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