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Low alloy steel WP91 reducing tees unequal tees 1 inch by 0.75 inch fittings cold rolled ASTM ASME SA 234

A butt weld pipe fitting is designed to be welded on site at its end(s) to connect pipe(s) together and allow change in direction or pipe diameter, or branching or ending.

This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals, …) in a safe and efficient manner, over short or long distances.

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Steel tee is a T-shaped pipe fittings that has three branches, normally has two forms with Equal Tee and Reducing Tee (Tee reducer), both are used to divide (combine) the pipelines to adjust the flow rate and change the direction.
Steel Equal Tee pipe fittings: The three branches of tee have same diameters.
Steel Reducing Tee / Reducer tee pipe fittings: The branch diameter is smaller than the main line diameter. Tee reducer is usually described as NPS diameters in 4 x 4 x 3, 4 is the main line pipe diameter, and 3 is the reducing branch.

Reducing tee is used more than equal tee since it has more functions and available for more environments.

Butt Weld Fitting Specification ASTM A403/ ASTM SA403, ASTM A815 / ASME SA815, ASTM A420 / ASME SA420, ASTM A234 / ASME SA234, ASTM A860 / ASME SA860, ASTM B366 / ASME SB366, DIN 2605 Part 1 / DIN 2605 Part 2, EN10253-2 / EN10253-4 TC1 and TC2
Butt Weld Fittings Manufacturing Process Hot / Cold / Fabricate / Seamless / Welded / Induction
Butt Weld Fittings Other Grades Stainless Steel – 304, 304L, 304H, 310s, 316, 316L, 317L, 321, 347, 904L, 410, 446 etc.
Carbon Steel – WPB, WPC, WPL6, WPHY42, WPHY46, WPHY52, WPHY56, WPHY60, WPHY65 etc.
Alloy Steel – WP5, WP9, WP11, WP22, WP91, 4140, Class 1, 2, 3 etc.
Duplex and Super Duplex – UNS N031803, UNS N032750, UNS N032760 etc.
Inconel – 600, 601, 625, 718, UNS N06600, UNS N06601, UNS N06625, UNS N07718 etc.
Incoloy – 800, 800H, 800HT, 825, UNS N08800, UNS N08810, UNS N08811, UNS N08825 etc.
Monel – 400, UNS N04400 etc.
Hastelloy – C276, C22, UNS N010276, UNS N06022 etc.
Titanium – Grade 2, Grade 3, UNS R50400, UNS R56200 etc.
Copper Nickel – 90/10, 70/30, UNS C71500, UNS C70600 etc.
Other – Alloy 20, SMO 254, UNS N08020, UNS N031254 etc.
EN / DIN
P235GHTC1/2 (St 35.8 I/ III), P265GH, S355J2H
16Mo3 (15Mo3), 10CrMo9-10 (10CrMo910), 13CrMo4-5 (13CrMo44)
X11CrMo5, X11CrMo9-1, X20CrMOV11-1, X10CrMoVNb9-1, X10CrWMoVNb9-2, 7CrMoVTiB10-10
P215NL (TTST35N/V), 12Ni14 (10Ni14)
P355N (StE355), P355NH (WStE355), P355NL1 (TStE355), P355NL2, L290NB (STE 290.7), L360NB (STE 360.7)
1.4301, 1.4306, 1.4362(Lean Duplex), 1.4401, 1.4404, 1.4435, 1.4436, 1.4439, 1.4462(Duplex), 1.4466(Super Duplex), 1.4501, 1.4539, 1.4541, 1.4550, 1.4571 1.4841, 1.4878,, 1.4876, 1.4952, 1.4835, 1.4877, 1.4910
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