Overview of pipe branch (Olets)
In recent years, branch (Olet) is widely used in foreign countries, which is used for branch pipe connection, instead of the traditional branch pipe connection types such as reducing tee, reinforcing plate and strengthening pipe section. It has outstanding advantages such as safety and reliability, cost reduction, simple construction, improvement of medium flow channel,series standardization, convenient design and selection, especially in high pressure, high temperature, large diameter and thick wall pipes It is widely used, instead of the traditional branch connection method. The main body of the branch is made of high-quality forgings with the same material as the pipe. The company uses carbon steel, alloy steel, stainless steel and other materials for users to choose. The branch pipe and main pipe are welded, and the connection of branch pipe and branch pipe or other pipes (such as short pipe, plug, etc.), instruments and valves are of butt welding, socket welding, thread and other types.
There are standard type,short type,miter type and elbow type of branch, see the following table for details:
|GB 19326 Socket welded||GB 19326 Pipe thread||GB 19326 Butt-welded|
|Standard||SOL (MSS SP-97, Q/FG11 standarad)||TOL (MSS SP-97, Q/FG12 standarad)||WOL (MSS SP-97, Q/FG13 standarad)|
|Nipolet||SNL (Q/FG14 standarad)||TNL (Q/FG14,SHB-PO1)||WNL(Q/FG14 standard)|
|Latrolet||SEL (Q/FG15 standarad)||TLL (Q/FG15,SHB-PO1)||WLL(Q/FG15 standard)|
|Elbolet||TEL (Q/FG16,SHB-PO1)||WEL(Q/FG16 standard)|