Forged Fittings ASME B16.11
Reducing Threaded Tee

asme-b16-11-threaded-reducing-tee

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Kaizen Steel Industries is a leading manufacturer and exporter specializing in Threaded Reducing Tees. Our offerings include grades such as SS 304, 304L, 304H, 316, 316L, and 316H. We are certified for manufacturing a comprehensive range of Threaded Reducing Tees tailored for various industrial applications.

Our product line features Forged Threaded Pipe Fitting Reducing Tees designed to meet international quality standards. We maintain a substantial inventory, allowing us to fulfill orders promptly and competitively.

The 3000# Threaded Reducing Tee is a crucial component designed to create a 90° branch from the main run of a pipe. According to the A182 SS Threaded Unequal Tees specification, there are two main types:

  • Equal Tee: Also known as a straight tee, this fitting has all ports of the same diameter, making it suitable for branching out from pipes of equal size.
  • Reducing Tee: In this fitting, the branch port has a smaller diameter compared to the run pipe, allowing it to connect pipes of differing sizes.

A stainless steel Reducing Threaded Tee is a T-shaped fitting with two outlets positioned at a 90° angle to the main line. These tees come in various outlet sizes, catering to different flow requirements. In a NPT Reducing Tee, the branch port size is smaller compared to the run ports, facilitating the reduction of pipe sizes while maintaining efficient flow control.

The ASME B16.11 Threaded Reducing Tee is a highly versatile pipe fitting designed to handle various fluid flow applications. It is available in multiple configurations, including solvent weld sockets, female thread sockets, side outlets, and opposed solvent weld sockets. 

Threaded Pipe Reducing Tee fitting plays a crucial role in either combining or splitting fluid flow, making it essential for both positive and vacuum applications. The design of the Threaded Reducing Tee ensures smooth flow paths, minimizing turbulence and making it suitable for water and waste supply management. It finds wide usage across industries such as oil and gas transmission, chemical processing, machinery, heat exchangers, power stations, sanitary tubing, water treatment systems, and petroleum and oil refining. 

The ASTM A182 SS Threaded Unequal Tees specification provides standards for forged low alloy and stainless steel piping components, ensuring high performance and reliability in pressure systems. The threaded reducing tee is available in both carbon steel and stainless steel materials, offering strength, corrosion resistance, and durability for various demanding applications.

Our commitment to quality and customer satisfaction ensures that all products conform to stringent international standards, making us a reliable choice for your threading and reducing tee needs.

Threaded Reducing Tee Specifications

Outside Diameter (OD) 1/8″NB TO 4″NB IN (DN6 x DN100)
Dimensions ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Wall Thickness SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS / DN6~DN100
Product’s Angle 0°~180°
Value Added Services Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering
Important Grades ASTM A403 WP 304 / 304L / 304H / 316 / 316L / 317 / 317L / 321 / 310 / 347 / 904L
Production Materials Stainless Steel, Alloy Steel, Carbon Steel, Duplex Steel, Super Duplex Steel, Nickel Alloys, Cupro Nickel, Low Temperature Steel
SS Melting Points 1400-1450°C (WP304, WP304L), 1390-1440 °C (WP316L), 1370 – 1400 °C (WP316)
Fittings Form Forged Threaded / Screwed Reducing Tee

Threaded Pipe Reducing Tee Manufacturing Standards

ASME Standard ASME/ANSI B16.11, MSS SP-79, MSS-SP-95, 83, 97
DIN Standard DIN28011, DIN2617, DIN2616, DIN2615, DIN2605
EN Standard EN10253-2, EN10253-1
ASME B16.11 Threaded
ASTM A182 – ASME SA182 Standard Specification for Wrought Austenitic SS Piping Threaded Fittings
MSS SP-95 Threaded Reducing Tee

Threaded Reducing Tee Materials and Grades

Material TypeGrade/Standard
Stainless Steel Threaded Reducing TeeASTM A403 WP Gr. 304, 304L, 304H, 310, 316, 316L, 316H, 316Ti, 317L, 321, 347, 904L
Carbon Steel Threaded Reducing TeeASTM A234 WPB, WPBW, WPHY 70, WPHY 65, WPHY 60, WPHY 52, WPHY 46, WPHY 42
Low Temperature Threaded Reducing TeeASTM A420 WPL6, ASTM A420 WPL3
Alloy Steel Threaded Reducing TeeASTM/ASME A/SA 234 Gr. WP1, WP5, WP9, WP11, WP12, WP22, WP91
Duplex & Super Duplex Steel Threaded Reducing TeeASTM A815, ASME SA815 UNS NO S31803, UNS NO S32205, UNS S32750, UNS S32950, Werkstoff No. 1.4462
Nickel Alloy Threaded Reducing TeeUNS 10276 (HASTELLOY C 276), UNS 6625 (INCONEL 625), UNS 6601 (INCONEL 601), UNS 6600 (INCONEL 600), UNS 8825 (INCONEL 825), UNS 8020 (ALLOY 20 / 20 CB 3), UNS 4400 (MONEL 400), UNS 2201 (NICKEL 201), ASTM/ASME SB 336 UNS 2200 (NICKEL 200)

Threaded Reducing Tee Types by Size, Class, and Wall Thickness

Description Class Designation
2000 3000 6000
Threaded Reducing Tee 1/2 – 4 1/2 – 2 1/2 – 2
1/2 – 4 1/2 – 2 1/2 – 2
1/2 – 4 1/2 – 2 1/2 – 2
Pipe Wall SCH 80 / XS SCH 160 XXS

ASME B16.11 Threaded Reducing Tee Types

asme-b16-11-reducing-threaded-tee1

Class 3000 elbow, Threaded Reducing Tee

asme-b16-11-reducing-threaded-tee2

Class 6000 elbow, Threaded Reducing Tee

asme-b16-11-reducing-threaded-tee3

Class 9000 elbow, Threaded Reducing Tee

asme-b16-11-reducing-threaded-tee4

B16.11 Threaded Reducing Tee

Threaded Reducing Tee Dimensions

NPS Min WT Center to End A Min Length of Thread Outside Dia of Band D
B J
1/2 3.18 28 10.9 13.6 33
3/4 3.18 33 12.7 13.9 38
1 3.68 38 14.7 17.3 46
1.1/4 3.89 44 17 18 56
1.1/2 4.01 51 17.8 18.4 62
2 4.27 60 19 19.2 75
2.1/2 5.61 76 23.6 28.9 92
3 5.99 86 25.9 30.5 109
4 6.55 106 27.7 33 146

ASME B16.11 Screwed / Threaded Reducing Tee Weight

Class 2000 Nominal Pipe Size 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
B 29/32 1 1/16 1 5/16 1 9/16 1 27/32 2 7/32 2 1/2 3 1/32 3 11/16 4 5/16 5 3/4
F 3/4 3/4 1 1 1/8 1 1/4 1 5/16 1 3/8 1 11/16 2 1/16 2 1/2 3 1/8
Wt 0.188 0.236 0.435 0.740 1.058 1.375 1.740 2.883 7.750 11.313 19.125
Class 3000 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
B 29/32 1 1/16 1 5/16 1 9/16 1 27/32 2 7/32 2 1/2 3 1/32 3 11/32 4 4 3/4 6
F 3/4 3/4 1 1 1/8 1 1/4 1 5/16 1 3/8 1 11/16 1 3/4 2 1/16 2 1/2 3 1/8
Wt 0.250 0.290 0.500 0.750 1.188 1.988 2.235 3.000 4.930 7.375 13.588 19.063
Class 6000 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
B 1 1/6 1 5/16 1 9/16 1 27/32 2 7/32 2 1/2 3 1/32 3 11/32 4 4 3/4 5 3/4
F 3/4 1 1 1/8 1 1/4 1 5/16 1 3/8 1 11/16 1 3/4 2 1/16 2 1/2 3 1/8
Wt 0.250 0.640 0.500 1.438 2.188 2.785 4.688 5.750 9.500 15.000 30.563

Tolerance of Threaded Reducing Tee Pipe Fittings

ND Max off angle Max off plane
Q P
1/2 a 4 1 2
5 a 8 2 4
10 a 12 3 5
14 a 16 3 7
18 a 24 4 10
26 a 30 5 10
32 a 42 5 13
44 a 48 5 20

Applications of Threaded Reducing Tee Pipe Fittings

    • Oil and Gas Transmission: Used for effective flow control in pipelines.
    • Chemical Industries: Ideal for handling chemicals and other reactive substances.
    • Machines and Equipment: Essential for integrating various components in machinery.
    • Heat Exchangers: Useful in systems requiring efficient fluid distribution.
    • Power Stations: Employed in power generation facilities for fluid management.
    • Sanitary Tubing: Ensures hygiene and reliability in sanitary applications.
    • Water Treatment Systems: Facilitates effective water treatment processes.
    • Petroleum and Oil Refining: Critical for managing flows in refining processes.

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