UNS S31803 tee
ASTM A815 UNS S31803 Tee Pipe in Kuwait
The UNS S31803 tee is a tee-shaped duplex stainless steel fitting that branches or redirects flow. It combines high strength with strong corrosion resistance for efficient fluid transportation.
At a glance
- Grade: UNS S31803 (EN 1.4462)
- Shape: tee-shaped branch fitting
- Configurations: equal (straight) and reducing
- Types: butt weld, seamless, flanged, lateral
- Testing: tensile test and Charpy impact test
- Used in: desalination, petrochemical refineries
A790 S31803 Buttweld Tee Manufacturer in Kuwait

| Parameter | Details |
| Material | UNS S31803 duplex stainless steel |
| Standard | ASTM A815 WP-S, WP-W |
| Size range | 1/2″ – 30″ (butt weld) |
| Schedule | SCH 5S – SCH 120S |
| End connection | Seamless |
| Production | Forged and heat treated |
| Surface finish | Mirror finish |
| Supply | Made in India, shipped to the Kuwait and worldwide |
Why Choose UNS S31803 Tee?
- Seawater resistance: performs well in desalination systems
- Aggressive chemicals: handles petrochemical refinery conditions
- High strength: suits demanding piping systems
- Efficient flow: branches or redirects fluid with a single fitting
Types of ASTM A815 UNS S31803 Tee
UNS S31803 tee types we supply for Kuwait projects:
| Tee type | Key details |
| Butt weld tee | 1/2″ – 30″, SCH 5S – SCH 120S, seamless |
| Flanged tee | Mirror finish |
| Pipe tee | Forged and heat treated, for chemical handling pipe |
| Equal (straight) tee | Branch and run are the same size |
| Reducing tee | Branch is a different size from the run, up to 48″ |
| Unequal tee | Branch smaller than the run |
| Lateral tee | 1/2″ – 24″ |
| Socket weld tee | Reducing configuration available |

A815 S31803 butt weld tee
- Size: 1/2″-30″
- Schedule: SCH 5S – SCH 120S
- End connection: Seamless

SA 815 s31803 flanged tee
- Surface finish: mirror finish
- Elongation: 40%
- Yield Strength: 290 MPa

A815 UNS S31803 pipe tee
- Usage: chemical handling pipe
- Production method: forged & heat treated
- Tensile Strength (Mpa): 515
Specification Table

Chemical composition (%)
| Element | % |
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.030 max |
| Sulphur (S) | 0.020 max |
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Nitrogen (N) | 0.08 – 0.20 |
Mechanical properties
| Property | Value |
| Tensile strength | 620 MPa min |
| Yield strength | 450 MPa min |
| Elongation | 25% min |
UNS S31803 Tee Stock in Mumbai for the Kuwait
- Our UNS S31803 tee stock covers butt weld, flanged, equal, reducing, unequal and lateral types
- Size and schedule range for most piping layouts
- Seamless options
- Mirror finish available
- To check UNS S31803 tee stock for the Kuwait, send your type, run size, branch size, schedule and quantity
Buy UNS S31803 Tee in the Kuwait from DuplexPipeline
When you buy UNS S31803 tee fittings from us, you get:
- Tensile and Charpy impact tested material
- Seamless and butt weld options
- Quality assurance and worldwide shipping, including the Kuwait
How to order
- Share type, run size, branch size, schedule and quantity
- Receive datasheet and quote
- Confirm the order
UNS S31803 Tee Price
UNS S31803 tee price depends on:
| Factor | Effect |
| Size | Larger tees use more material |
| Schedule and wall thickness | Thicker walls cost more |
| Type | Seamless, welded and flanged tees are priced differently |
| Configuration | Equal and reducing tees differ in forming |
| Quantity | Larger orders can change the rate |
- Request a quote for the latest UNS S31803 tee price in the Kuwait

A815 S31803 unequal tee

ASTM A815 WP-W seamless tee

SA 815 UNS S31803 reducing tee
How Equal Tees Are Manufactured
- Process raw material into billets
- Hot-roll or forge to the desired dimensions
- Shape the billet in a forming press or extrusion machine
- Machine to refine dimensions and angles
- Solution anneal or stress relieve to improve mechanical properties
Applications of UNS S31803 Tee
| Industry | Use |
| Desalination | Good resistance to seawater corrosion |
| Petrochemical refineries | Exposure to aggressive chemicals |
| Chemical handling | Branch connections in process piping |
Temperature Range of UNS S31803 Tee
- Works from sub-zero temperatures up to about 300°C (572°F)
- Limits depend on application and design code
- Consider thermal cycling and exposure time
- Check the material data sheet for higher temperatures
Selecting the Right Size
| Item | Rule |
| Run size | Match the main pipe |
| Branch size | Match the branch connection |
| Straight (equal) tee | Branch and run are the same size |
| Reducing tee | Branch and run are different sizes |
| Dimensional tolerance | Set by the applicable standard or code |
Our Products
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- ASTM A789 UNS S31803 seamless tube
- ASTM A790 UNS S31803 seamless pipe
- UNS S31803 concentric reducers
- UNS S31803 elbow
- UNS S31803 tee
- UNS S31803 end cap
- UNS S31803 Slip on Flange
- UNS S31803 lap joint flange
- UNS S31803 socket weld flange
Frequently Asked Questions
UNS S31803 tee — Questions Buyers Ask Most
What is a piping tee used for?
What is a tee for pipe branching called?
Straight tee when branch and run sizes match
Reducing tee when they differ
What is SS pipe tube tee made of?
UNS S31803 duplex steel, with high strength and corrosion resistance
What sizes does a steel pipe tee come in?
1/2″ up to 48″, across multiple schedules and pressure classes
What temperatures can a piping tee withstand?
What is UNS S31803 Tee and where is it used?
It is a tee-shaped fitting produced from a popular grade of steel that offers a combination of high strength and corrosion resistance. These fittings are employed in piping systems to facilitate branching or redirection of flow, ensuring efficient fluid transportation.
UNS S31803 tee is utilized in desalination systems as they exhibit good resistance to seawater corrosion and can endure the high temperatures. They find application in petrochemical refineries where they are exposed to a wide range of aggressive chemicals and high-temperature environments.
A790 S31803 buttweld tee manufacturer in India

How ASTM A815 UNS S31803 Equal Tees are manufactured?
The manufacturer processes the raw material into billets and hot-roll or forges them to achieve the desired dimensions. The ASTM A815 UNS S31803 equal tee billet is placed in a forming press or extrusion machine where it is shaped into the tee form.
After the initial forming, the ASTM A182 S31803 pipe tee undergoes machining operations to refine its dimensions and achieve precise angles. Manufacturers employ heat-treatment procedures such as solution annealing or stress relieving to enhance the mechanical properties and stability of the tee.
We offer SA 815 UNS S31803 seamless tee in Mumbai with high corrosion and resistance

A815 S31803 unequal tee

ASTM A815 WP-W seamless tee

SA 815 UNS S31803 reducing tee
What is the temperature range for A815 S31803 unequal Tee?
The temperature range for A815 S31803 unequal tee can vary based on the specific area or application, and the applicable standards or codes. This tee can work sturdily in applications with temperatures ranging from sub-zero temperatures up to around 600°C to 650°C or 1112°F to 1202°F without deformation.
When it comes to temperatures higher than this limit, consult the material data sheets and design codes of the ASTM A815 WP-S UNS S31803 split tee. It us crucial to consider factors such as thermal cycling, and the duration of exposure when assessing the temperature limits for the tee.
Looking to buy cheap A815 S31803 equal tee? check wall thickness and chemical composition here
Specification of UNS S31803 tee

Supplier of ASTM A815 UNS S31803 reducing tee with tensile test and charpy impact test
Types of ASTM A815 UNS S31803 tee

A815 S31803 butt weld tee
- Size: 1/2″-30″
- Schedule: SCH 5S – SCH 120S
- End connection: Seamless

SA 815 s31803 flanged tee
- Surface finish: mirror finish
- Elongation: 40%
- Yield Strength: 290 MPa

A815 UNS S31803 pipe tee
- Usage: chemical handling pipe
- Production method: forged & heat treated
- Tensile Strength (Mpa): 515
Check the latest stock of 1.4462 UNS S31803 lateral tee in size to 1/2 inch to 24 inches in diameter
Chemical composition of A815 S31803 buttweld tee

Mechanical properties of UNS S31803 reducing tee

What are the sizes available for ASTM A815 WP-W reducing tee?
ASTM A815 WP-W reducing tee is commonly available in a range of sizes to accommodate different pipe diameters and system configurations. These reducing tees are usually produced by manufacturers in sizes from 1/2″ to 48″ depending on the project requirements.
When selecting the size of the 1.4462 UNS S31803 lateral tee it’s important to consider the pipe sizes and flow requirements of the piping system. The branch size of the tee should match the desired pipe size for the branch connection while the run size should match the desired pipe size.
What is the dimensional tolerance for SA 815 s31803 butt weld tee?
The dimensional tolerances for SA 815 s31803 butt weld tee are typically specified by the applicable standards or codes. These standards provide guidelines for the manufacturing and dimensional requirements of the A815 S31803 flanged tee.
Differences between straight and reducing tees made from UNS S31803
A straight SA 815 UNS S31803 seamless tee has branches of the same size as the run pipe. A reducing ASTM A815 UNS S31803 socket weld tee, on the other hand, has branches of different sizes compared to the run pipe.
Our products
- Duplex pipe
- Duplex tube
- Super duplex pipe
- Super duplex tube
- Duplex heat exchanger tubes
- Super duplex heat exchanger tubes
- Duplex plate
- Super duplex plate
- Duplex pipe fittings
- Super duplex pipe fittings
- Duplex steel flanges
- Super duplex flanges
- Duplex round bar
- Super duplex round bar
- Duplex steel fasteners
- Duplex 2205 pipe
- Super duplex 2507 pipe
- Super duplex 2507 flanges
- ASTM A789 UNS S31803 seamless tube
- ASTM A790 UNS S31803 seamless pipe
- UNS S31803 concentric reducers
- UNS S31803 elbow
- UNS S31803 tee
- UNS S31803 end cap
- UNS S31803 slip on flange
- UNS S31803 socket weld flange
- UNS S31803 lap joint flange
- Duplex Pipeline
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