Carbon steel tee is also a kind of pipe fittings, there are generally two kinds. Equal diameter tee, both ends of the same diameter, branch pipe and the other two diameters are called reducing tee.
The method of expression is as follows: For an equal diameter tee, for example, "T3" (3 inches =DN80), the three means an equal diameter tee with an outer diameter of 3 inches. For reducing tees, for example, "T4 x 4 x 3.5" (4 inches =DN100,3.5 inches =DN90) means a reducing tee with a diameter of 4 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., three way, the outer diameter range is 2.5 "-60" (2.5 inches =DN65,60 inches =DN1500), the wall thickness is 3-60mm, From 26 "to 60" (26 "=DN650, 60" =DN1500) for welded tees. 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.