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45° Lateral Tee

DataTime:[5/30/2016]

45° Lateral Tee

A 45° lateral tee (Y type tee) means a pipe fitting which is similar to a tee but has a side opening outlet branch at a 45 degree angle. It is a kind of steel pipe tee, but the branch direction is different with the straight tee . On the contrary to the lateral tee, the straight tee has a branch pipe direction of 90 degree to the run pipe. 


It could be a equal tee, also could be a reducing pipe tee. when installing the 45° lateral tee with the pipes, welders must note the flowing direction. because to the main run pipe, the branch is 45 degree and 135 degree angle. Because of the specical shape and direction of the branch, the lateral tee are made from two pieces of pipe,and welded together.

Standard: ASME/ANSI B16.9, MSS-SP-75, DIN 2615, EN 10253-2 , JIS B2311, GOST 17379

Material: ASTM A234, ASTM 403,DIN 17175, EN10228 …Carbon steel, stainless steel , alloy steel.

Size: 3″-72″. DN80-DN1800

Connect method: Butt welding.

Type:  Welded : DN80-DN1800 
Product name : 45° Lateral Tee
Nominal Pipe Size Dimension
DN NPS X and Y Z
25 1  146 45
32 1.1/4 159 45
40 1.1/2 178 51
50 2  203 64
65 2.1/2 241 64
80 3  254 76
90 3.1/2 292 76
100 4  305 76
125 5  343 89
150 6  368 89
200 8  445 114
250 10  521 127
300 12  622 140
350 14  686 152
400 16  762 165
450 18  813 178
500 20  889 203
600 24  1029 229
650 26  1308 267
700 28  1442 286
750 30  1524 299
800 32  1626 311
850 34  1727 330
900 36  1829 350
For straight tee X=Y, reducing tee X Y is selected according to DN.

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