UNS S31803 end cap
ASME SA815 UNS S31803 End Cap Distributor in UAE
An end cap seals the open end of a pipe, preventing leaks and containing fluids or gases under pressure. Pressure vessels also need cap ends to seal openings and keep the vessel sound.
At a glance
- Grade: UNS S31803 (EN 1.4462)
- Standard: ASTM A815 WP-S, WP-W
- Sizes: 1/2″ – 30″
- Schedule: SCH 5S – SCH 120S
- Method: seamless, forged and heat treated
- Testing: NDT, visual and dimensional inspection
S31803 Cap Fittings Manufacturer in UAE
DuplexPipeline manufactures UNS S31803 end caps in Mumbai for process piping and plumbing systems.
| Parameter | Details |
| Material | UNS S31803 duplex stainless steel |
| Standard | ASTM A815 (WP-S, WP-W), ASME SA815 |
| Size range | 1/2″ – 30″ |
| Schedule | SCH 5S – SCH 120S |
| End connection | Seamless / buttweld |
| Surface finish | Mirror finish |
| Supply | Made in India, shipped to the UAE and worldwide |
ASTM A815 UNS S31803 cap fitting
A815 S31803 buttweld cap
ASTM A815 WP-W pipe end cap
Why Choose a Duplex End Cap?
- Toughness: resists impact and vibration
- Corrosion protection: protects pipe openings and extends piping system life
- High strength: withstands high-pressure and high-stress conditions
- Dual-phase structure: gives strength, toughness and stress corrosion cracking (SCC) resistance
- Crevice resistance: strong against surface and crevice corrosion
Types of ASTM A815 UNS S31803 Cap Fittings
End cap types we supply for UAE projects:
| Cap type | Key details |
| Buttweld cap (WP-W) | Welded onto the pipe end |
| Seamless cap | Mirror finish, forged and heat treated |
| SA 815 weld cap | 1/2″ – 30″, SCH 5S – SCH 120S, seamless |
| Pipe cap | For chemical handling pipe |
| Round cap | From a few inches to several feet in diameter |
SA 815 UNS S31803 weld cap
- Size: 1/2″-30″
- Schedule: SCH 5S – SCH 120S
- End connection: Seamless
A815 S31803 seamless cap
- Surface finish: mirror finish
- Usage: chemical handling pipe
- Production method: forged & heat treated
ASTM A815 UNS S31803 pipe cap
- Tensile Strength (Mpa): 515
- Yield Strength: 290 MPa
- Elongation: 40%
Specification of UNS S31803 End Caps
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 End Caps Stock in Mumbai for the UAE
- Our UNS S31803 end caps stock covers buttweld, seamless, pipe and round cap types
- Sizes from 1/2″ to 30″
- Schedules SCH 5S to SCH 120S
- Mirror finish available
- To check UNS S31803 end caps stock, send your size, schedule, type and quantity
Buy UNS S31803 End Caps in the UAE
from DuplexPipeline
When you buy UNS S31803 end caps from us, you get:
- NDT testing and visual inspection
- Dimension and tolerance checks
- Quality assurance and worldwide shipping, including the UAE
How to order
- Share size, schedule, type and quantity
- Receive datasheet and quote
- Confirm the order
UNS S31803 End Caps Price
UNS S31803 end caps price depends on:
| Factor | Effect |
| Size | Larger caps use more material |
| Schedule and wall thickness | Thicker walls cost more |
| Type | Seamless and buttweld caps are priced differently |
| Quantity | Larger orders can change the rate |
- Request a quote for the latest UNS S31803 end caps price in the UAE
- Check dimensions and tolerance before purchasing
Temperature and Pressure Ratings of an End Cap
- Maximum temperature depends on exposure time and corrosive media
- Duplex steel is generally used up to about 300°C (572°F)
- Pressure rating depends on wall thickness, diameter and manufacturing standard
- Ratings are given as maximum allowable working pressure (MAWP) at specific temperatures
- Check industry standards and our datasheet for exact ratings
Applications of UNS S31803 End Caps
| Use | Where |
| Process piping | Oil and gas, chemical processing |
| Plumbing systems | Industrial pipe closures |
| Pressure vessels | Tanks, reactors and heat exchangers |
- Provide a secure closure that contains fluids or gases under pressure
Testing Methods
| Test | What it checks |
| Visual inspection | Appearance, surface condition and visible defects |
| Dimensional inspection | Dimensions and tolerances against requirements |
| NDT | Hidden defects without damaging the cap |
Dimensions and Tolerances
- Diameter ranges from a few inches to several feet, depending on application
- Tolerances follow the applicable standard
- Wall thickness, length and manufacturing process also affect tolerance
Frequently Asked Questions
UNS S31803 end cap — Questions Buyers Ask Most
What is an end cap used for?
Seals the open end of a pipe, preventing leaks and sealing pressure vessels
What is a pipe end cap made from?
How is a cap for pipe end installed?
Usually welded (buttweld) onto the open end of the pipe
Is a duplex end cap corrosion-resistant?
What sizes are available for UNS S31803 end caps?
These end caps are used in both process piping and plumbing systems across various industries including oil and gas, and chemical processing. Pressure vessels often need end caps to properly seal the openings and maintain the integrity of the vessel.
UNS S31803 end cap is utilized in the construction of pressure vessels such as tanks, reactors, and heat exchangers. They provide a secure closure for these vessels ensuring the containment of fluids or gases under pressure.
S31803 cap fittings manufacturer in India
ASTM A815 UNS S31803 cap fitting exhibits good toughness which makes them more resistant to impact and vibration. Using these cap fittings helps protect the ends of pipes from corrosion ensuring the integrity and longevity of the piping system.
ASTM A182 S31803 cap offer enhanced mechanical strength allowing them to sturdily withstand high-pressure and high-stress conditions. This dual phase structure mainly contributes to the material’s superior strength, toughness, and resistance to stress corrosion cracking SCC.
Get high-quality UNS S31803 buttweld cap stock that has a very strong resistance to surface and crevice corrosion
ASTM A815 UNS S31803 cap fitting
A815 S31803 buttweld cap
ASTM A815 WP-W pipe end cap
The maximum allowable temperature for an A815 S31803 buttweld cap will depend on the duration of exposure, and the presence of corrosive media. 1/2″, 3/4″, and 1″sized end caps can endure temperatures of 600°F without deformation or failure.
The pressure rating of the ASTM A815 UNS S31803 pipe cap depends on factors such as the wall thickness, diameter, and manufacturing standards. Pressure ratings of the caps range from 1500 psi for 1/2″ size to 7500 psi for 2″ size.
We supply ASTM A815 UNS S31803 pipe cap with NDT testing and visual inspection for great quality and high performance
Compare our price with other manufacturers of SA 815 UNS S31803 weld cap before purchasing, check dimension and tolerance.
SA 815 UNS S31803 weld cap
- Size: 1/2″-30″
- Schedule: SCH 5S – SCH 120S
- End connection: Seamless
A815 S31803 seamless cap
- Surface finish: mirror finish
- Usage: chemical handling pipe
- Production method: forged & heat treated
ASTM A815 UNS S31803 pipe cap
- Tensile Strength (Mpa): 515
- Yield Strength: 290 MPa
- Elongation: 40%
Distributor of A815 S31803 seamless cap in class 150 to 2500. for more information contact us now!
The temperature and pressure ratings for the A815 S31803 buttweld cap depend on the size, wall thickness and applicable industry standards. In general, these buttweld caps are designed to withstand high-temperature and high-pressure conditions typical in piping systems.
Pressure ratings are typically given as maximum allowable working pressures MAWP at specific temperatures. Consult the relevant industry standards and manufacturer’s data for accurate and up-to-date information on temperature and pressure ratings for the ASTM A815 UNS S31803 pipe cap.
Visual inspection assesses the overall appearance, surface condition, dimensions, and any visible defects of the ASTM A815 WP-W pipe end cap. The dimensional inspection entails verifying the dimensions and tolerances of the cap ensuring it meets the specified requirements.
The diameter of the SA 815 s31803 round end cap can range from a few inches to several feet depending on the application. Tolerances for the caps depend on the applicable standards, dimensions such as wall thickness and length, and the manufacturing process used
