Forged pipe fittings mainly include socket welded pipe fittings and threaded pipe fittings; butt welded pipe fittings or mixed joint fittings are sometimes also manufactured by forging process, such as thick-walled small tees, branch pipe sockets, etc. Similarly, pipes of mixed connection type are sometimes It can be made of steel pipe. Mainly divided into the following three:
a, socket welded pipe fittings
The types of socket welded pipe fittings listed in the product standard include 45° elbow, 90° elbow, tee, cross, 45° oblique tee, double socket hoop, single socket hoop, cap, Live joints, branch sockets, etc. Among them, the three-way and the four-way have the equal diameter and the different diameter; the double-bearing pipe clamp also has the equal diameter and the different diameter, and the different-diameter double-end pipe clamp has the concentricity and the eccentricity.
b, threaded pipe fittings
The types of threaded fittings listed in the product standard include 45° elbows, 90° elbows, tees, crosses, double interface hose clamps, single interface hose clamps, pipe caps, pipe plugs, internal and external threaded joints, unions, Branch pipe and so on. The same as the socket welded pipe fittings, the three-way and the four-way have the equal diameter and the different diameter; the double-interface pipe hoop has the equal diameter and the different diameter, and the different-diameter double-interface pipe hoop has the concentric and eccentric points. The pipe plug is divided into three types: square head, hexagon head and round head; the inner and outer threaded joints are divided into two types: hexagonal head and no head.
c. Pipe fittings in mixed connection form
Pipe fittings in the form of hybrid joints include tees, crosses, elbows, pipe ferrules in the form of socket welds and threaded joints in forged pipe fittings, as well as socket welds, threaded and butt welds, and butt welds, A reduced diameter pipe or the like connected by any one or two of the connection forms of the socket welding and the thread. The characteristics of such fittings are that they can be machined into different joints according to the requirements of the piping to meet the piping design requirements. Among them, the diameter reduction range of the reduced diameter pipe is larger than the different diameter pipe, and there are also equal diameter and different diameter.