Three links

الوصف

The tee is a pipe fitting and a pipe connector. 
Also known as pipe fittings tee or tee pipe fittings, stainless steel equal diameter tee, tee joint, used in the main pipe to branch pipe. 
A three-way is a chemical pipe fitting with three openings, namely, one inlet, two exits, or two inlets and one outlet, with T-shaped and Y-shaped, equal-diameter pipe openings, and different diameter pipe openings, which are used at three same or different pipeline confluence points. 
[1] the main function of the tee is to change the direction of the fluid. 
The representation is as follows: for equal-diameter tee, such as "T3" (3-inch = DN80) tee, it means equal-diameter tee with an outer diameter of 3 inches. 
For a different diameter tee, for example, "T4 × 4 × 3.5" (4 inches = DN100,3.5 inches = DN90) means a different diameter tee with a diameter of four inches and a diameter of 3.5 inches. 
The material is generally 10 # 20 # A3 Q235A 20g 20g 16Mn ASTM A234 ASTM A105 ASTM A403, etc., tee, outer diameter range 2.5 "- 60" (2.5 inch = DN65,60 inch = DN1500), wall thickness 3-60mm, from 26 "- 60" (26 inch = DN650,60 inch = DN1500) to welded tee. 
Wall thickness 28-60mm. 
The pressure levels are Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS;Sch80, Sch100, Sch120, Sch140, Sch160, XXS.