A straight tee means a tee of pipe fitting which the branch outlet has a 90 degree direction turning from the main pipe of the tee.
A Reducing Tee is also called “unequal tee“,which means the tee branch pipe diameter is not same with the run pipe of the tee.Commonly, in a reducing tee,the branch pipe diameter is smaller than the running pipe.But there are also some project the branch pipe diameter of the tee is bigger than the run pipe,it means the branch is the inlet of the flow .
Regarding the butt welding steel tees,it should be described the two different diameters to show it completely,for example,4″X3″ tees.In the pipe fitting application,the reducing tee is used when considering size reduction from one of the run ports to the other.For different industry projects,the reducing tees are available in many various combinations of sizes and configurations in a piping system.
Standard: ASME/ANSI B16.9,MSS-SP-75,DIN 2615,EN 10253-2,JIS B2311,GOST 17378
Material: ASTM A234,ASTM 403,DIN 17175,EN10228 …Carbon steel,stainless steel,alloy steel.
Size: 1/2″-96″. DN15-DN2400
Connect method: Butt welding.
Type: Seamless: DN15-DN600,