Sockolet and weldolet are both types of branch connection fittings used in piping systems to create a branch from a main pipe run. Haihao Group usually produces sockolet and weldolet according to MSS SP-97 standard.Sockolets and weldolets are available in a wide range of materials to suit different applications. They are commonly made from materials such as ASTM A105, ASTM A350 LF2, ASTM A182 F304/F304L, ASTM A182 F316/F316L, and other alloys specified by the end-user or project requirements.The differences between weldolet and sockolet are as follows:
ASTM A182 F11 MSS SP-97 weldolets
While both sockolets and weldolets serve as branch connection fittings in piping systems, they differ in their design, attachment method, and application. Sockolets are socket-weld fittings welded over the pipe end, whereas weldolets are butt-weld fittings welded directly onto the main pipe run. Weldolets are generally preferred for high-pressure and high-temperature applications, while sockolets are more commonly used in smaller diameter pipes and low-pressure services.
Design and attachment method of sockolet and weldolet:
Sockolet: A sockolet is a socket-weld fitting that resembles a “socket” with a threaded hole at the bottom. It is designed to fit over the pipe end and is welded into place using a socket weld technique. The pipe is inserted into the socket portion of the sockolet, and then the fitting is welded around the base of the pipe, providing a branch connection.
Weldolet: A weldolet, on the other hand, is a butt-weld fitting with a beveled end that is welded directly onto the main pipe run. It features a contoured outlet resembling a welding neck flange, which is welded to the main pipe using a full penetration weld. The branch connection is formed by welding the outlet of the weldolet to the main pipe.
Sockolet or socket weld outlet
Application and usage of sockolet and weldolet:
Sockolet: Sockolets are commonly used in smaller diameter piping systems or in applications where space constraints or accessibility issues make it impractical to use a weldolet. They are suitable for low-pressure and low-temperature services.
Weldolet: Weldolets are preferred for high-pressure and high-temperature applications due to their stronger welded connection. They are typically used in larger diameter pipes and critical applications where integrity and reliability are paramount.
Strength and Reinforcement of sockolet and weldolet:
Sockolet: Sockolets rely on the strength of the socket weld joint and the surrounding weld reinforcement for structural integrity. Proper welding practices and reinforcement are crucial to ensure the strength and reliability of the connection.
Weldolet: Weldolets provide a stronger and more robust branch connection due to the full penetration weld between the outlet and the main pipe. The weldolet’s design allows for better stress distribution and reduces the risk of failure, especially in high-pressure systems.
