A straight tee means a tee of pipe fitting which the branch outlet has a 90 degree direction turning from the main pipe of the tee.Commonly people consider the straight tee as the equal tee,it is a mistake.Equal tee means a same sizes of the branch and main pipe of a tee.Straight tee means it has a side port at right angle to the run.
On the contrary to the straight tee,it is the lateral pipe tee.The straight tee could be a equal tee,also could be a reducing pipe tee (unequal tee).
Officially a straight tee will be indicated by 3 diameters,namely 3 x 3 x 2 (A x B x C).The A & B measure stands for the nominal pipe size of run-pipe,C measure stands for nominal pipe size of outlet.
| Standard | ASME/ANSI B16.9, MSS-SP-75, DIN 2615, EN 10253-2 , JIS B2311,GOST 17378or customer’s drawings |
| Size | 1/2″-96″. DN15-DN2400 |
| Schedule/ Wall Thinkness | sch5s,sch10s,sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, SGP or any other required thickness |
| Materials | Carbon steel: ASTM A234 WPB, S235,P235GH,ST35.8,ST37,SS400,ST20,C20,Q235 |
| Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP91-WP9 | |
| Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H |
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| Low-temperature steel:ASTM/ASME A420 WPL3-WPL6 | |
| High performance carbon steel: ASTM A860 WPHY42 , WPHY46,WPHY52, WPHY60, WPHY65, WPHY70 | |
| Package | Wooden Case, Plywood Pallet. |