The tee belongs to a type of pipe fittings, the tee is also known as tee pipe fittings or tee pipe fittings, tee joints, etc. Stainless steel forged tee is mainly used to change the direction of fluid and is used in the main pipeline to branch the pipeline. The tee is divided into equal diameter TS tee and TR reducer tee, equal main tee diameter and branch pipe diameter is the same tee, the diameter of the reducing tee branch pipe is smaller than the diameter of the main pipe. tee. The tee is divided into positive tee and oblique tee according to the shape of the branch pipe, the positive tee is the three-way pipe fittings of the vertical main pipe of the branch pipe, and the tee is the pipe fittings three-way with a certain angle between the branch pipe and the main pipe. According to the processing technology, the T-shirt can be divided into seamless T-shirt (reference GB/T12459-2017) and plate T-shirt (reference GB/T13401-2017). Tee pipe fittings are used in places where pipelines have branches, due to their convenient and simple use, they are widely used in chemical industry, civil construction, machinery manufacturing, shipbuilding industry and other fields .
Tee is divided into carbon steel, stainless steel, alloy steel, special alloy steel, duplex stainless steel, etc. by material; Carbon steel: (20#, A3, Q235, Q235A, Q235B, 20G, 16Mn, Q345, Q345R, ASTM A234WPB, ASTM A105, etc.); Stainless steel: (304, 304L, 316, 316L, S30408, S30403, S31608, S31603, SUS304, ASTM A403, TP321, TP317L, 347, 0Cr18Ni9, 00Cr19Ni10, , 1Cr18Ni9Ti, 06Cr17Ni12Mo2 , 022Cr17Ni12Mo2, etc.); Alloy steel: (16MnR, Cr5Mo, 12Cr1MoV, 10CrMo910, 15CrMo, 12Cr2Mo1, A335P22, St45.8/III., A10bB, etc.); Special alloy steel: (TP310S, 904L, Incoloy800, Incoloy825, Incoloy600, Incoloy625, etc.); Duplex stainless steel: (F51, S31803, S2205, F53, 2507, S32750, F55, 2607, S32760, etc.).
Three commonly used implementation standards:
National standards: GB/T12459-2017, GB/T13401-2017
American Standard: ASME B16.9, ASME B16.28, ANSI B16.11
Petrochemical standards: SH/T3408-2012, SH/T3409-1996
Standard of the Ministry of the Chemical Industry: HG/T21635-1987
Power Industry Standard: DL/T695-2014
Oil and gas industry standard: SY/T0510-2017
German DIN standard: DIN2615
