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Reducing tee: the branch pipe is called reducing tee, which is different from the other two diameters. The two ends with the same diameter are called equal diameter tee. Reducing tee is widely used in petrochemical, oil and natural gas, liquefied gas, fertilizer, power plant, nuclear power, shipbuilding, papermaking, pharmaceutical, food sanitation, urban construction industries of engineering construction and maintenance.

The expression is as follows: for iso-diameter tee, for example, "T3" tee means iso-diameter tee with an outer diameter of 3 inches. For reduced-diameter tee, such as "T4 x 4 x 3.5", it represents the reduced-diameter 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 ASTMA403, etc. tee, outside diameter range is 2.5 "-60", from 26 "-60" is the welding tee. Wall thickness of 28-60 mm.

The wall thickness grade is: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s and XS. Sch80, Sch100, Sch120, Sch140, Sch160, XXS.

Diameter tee, usually a professional term, tee pipe fittings, pipe fittings, used in the main pipe branch pipe. Different diameter tee is a kind of three - way, three - way general equal diameter tee, two different diameter tee. Because the three ends can be connected to the pipe.

In industry, the pressure of this kind of pipe fittings is higher, the pressure can reach 600 kilograms, the pressure of water pipes in life is lower, generally 16 kilograms.

Santong can be used in many industries and can be divided into the following categories according to different types:

1. The production method can be divided into top, pressing, forging, casting, etc.

2. The manufacturing standards can be divided into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, etc.