Stub-in and Stub-on are methods for making a fabricated branch connection from the pipe. Both Stub-in and Stub-on branch connections are approved by international codes and standards and reduce the cost of pipe fittings.

Stub-in connections suit scenarios where the difference between header/run pipe and branch pipe exceeds one size. Stub-on connections apply when both pipes are of the same size, or there is a one-size difference. For this connection type, the pipe …

Stub-in is a type of branch from a run pipe that is fabricated by making a hole of approx 6mm larger than the outer diameter of the branch pipe. The stub-in is usually used when the branch is more than one size smaller than the main run pipe.

What is stub-on? Stub-on connection is the opposite of the stub-in connection,the hole cut in the running pipe has the same inside diameter (ID) as the branch pipe (not header). The end profile of the branch tube is the same as the outer diameter (OD) of the header pipe and is then installed outside the hole of the header pipe.

Stub-on connections, also referred to as saddle connections or saddle taps, involve attaching a saddle-like fitting onto the main pipe to create a branch connection. This technique is commonly used for smaller pipes or temporary connections.

Taking a tapping connection from a run pipe directly by making a hole in the run pipe or using an outlet fitting is called a branch connection. This provides a connection of pipe for fluid flow from a higher diameter of the pipe to a lower diameter of the pipe.

Stub-on connections, also called saddle connections or saddle taps, consist of attaching a saddle-like fitting to the main pipe to make a branch connection. This technique is often used for smaller pipes or temporary connections.

2024年3月24日 · What is the difference between Stub in and Stub on connectionsPiping, Pressure Vessels, Storage Tanks, Structural FabricatIllustrated piping tolerance refere...

2011年7月12日 · For "stub in," the stub or branch pipe extends to the inside of the main pipe. The hole in the main pipe is (usually) beveled to allow for a full-penetration weld. For "stub on," the stub extends only to the outside of the main pipe.

2022年4月18日 · Stub-in is a type of branch from a run pipe that is fabricated by making a hole of approx 6mm larger than the outer diameter of the branch pipe. The stub-in is usually used when the branch is...