Duplex Steel Tube Plug Manufacturer & Supplier
Unifit Fastener is a trusted manufacturer and supplier of duplex steel tube plugs, which are of high strength, durable, and of good performance. Our duplex UNS S31803 tube plugs are commonly used in chemical processing equipment, paper and pulp bleaching units, and other highly stressful systems. Duplex UNS S32205 Pin tube plugs have the highest resistance to chloride stress cracking, pitting, and crevice corrosion, and hence, they can be used in harsh working environments.
Duplex UNS S31803 Collar Tube Plugs have a high ability to withstand halide-rich environments such as chloride, fluoride, and bromide media. Our Duplex UNS S32205 Condenser Tube Plugs are of high compressive strength, and therefore they can be relied on in different industrial processes. Unifit Fastener has a variety of different designs and specifications of Duplex UNS S31803 One-Piece Tube Plugs to fit a variety of industry requirements.
In order to ensure their safe delivery and extended usage, our Duplex UNS S32205 Boiler Tapered Tube Plugs are carefully packed. Also in its range are Duplex UNS S31803 threaded tapered tube plugs and super duplex steel tube plugs that are valued due to their fine finish, reliability, and quality uniformity. Duplex UNS S32205 Tapered Metal Tube Plugs are appreciated due to their resistance to corrosion, long service life, and reliable structure. Duplex UNS S31803 heat exchanger tube plugs have been famous for their operating stability in high-pressure and high-temperature applications.
Order Duplex Tube Plugs in both small and bulk quantities, including Duplex Steel S31803 Two-Piece Tube Plugs, Duplex S32205 Boiler Tube Plugs, Duplex Steel 2205 Header Plugs, and S31803 Duplex Metal Tapered Plugs for Heat Exchangers. Trusted supplier of high-quality Duplex tube plug solutions in Mumbai, India.
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What are Duplex Steel Tube Plugs?
Duplex Steel Tube Plugs are specifically manufactured tapered fittings that are inserted into damaged or unused tubes in equipment (including heat exchangers, condensers, and boilers) to seal them. These plugs are manufactured in very strong duplex stainless steel material grades, such as UNS S31803 / S32205 (2205) or UNS S32750 / S32760 (2507), and give superior corrosion, chemical, and chloride resistance. Their strength and durability are high in order to ensure the safety of equipment, avoid leakage, and enhance the service life in general.
Specification of Duplex Steel Tube Plugs
| Specification | Details |
|---|---|
| Diameter Range | From 0.375 in (9.52 mm) up to 2.5 in (63.5 mm) |
| Maximum Length | Up to 6 in (152.4 mm) |
| Pressure Capacity | Designed to withstand up to 150 PSI |
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Metal Tapered Tube Plugs – Tube Plug Sizing Chart
| Tube OD | Gauge Range | A – Small End (in.) | B – Large End (in.) | L – Length (in.) |
|---|---|---|---|---|
| 1/4″ | 18–24 | 0.141″ | 0.235″ | 1-1/4″ |
| 3/8″ | 12–24 | — | — | — |
| 3/8″ | 15–24 | 0.213″ | 0.371″ | 1-3/4″ |
| 1/2″ | 13–15 | — | — | — |
| 1/2″ | 15–24 | 0.337″ | 0.495″ | — |
| 5/8″ | 12–14 | — | — | — |
| 5/8″ | 14–24 | 0.449″ | 0.625″ | — |
| 3/4″ | 10–14 | — | — | — |
| 3/4″ | 14–24 | 0.564″ | 0.750″ | — |
| 7/8″ | 10–13 | — | — | — |
| 1″ | 8–9 | — | — | — |
| 7/8″ | 15–24 | 0.706″ | 0.875″ | — |
| 1″ | 10–15 | — | — | — |
| 1″ | 13–18 | 0.776″ | 0.934″ | — |
| 1″ | 18–24 | 0.892″ | 1.050″ | — |
| 1-1/8″ | 13–17 | — | — | — |
| 1-1/8″ | 15–24 | 0.949″ | 1.125″ | 2″ |
| 1-1/4″ | 10–14 | — | — | — |
| 1-1/4″ | 13–19 | 1.010″ | 1.186″ | — |
| 1-1/4″ | 19–24 | 1.147″ | 1.323″ | — |
| 1-1/2″ | 10–24 | 1.200″ | 1.495″ | 3″ |
| 1-1/2″ | 14–24 | 1.305″ | 1.600″ | — |
| 1-3/4″ | 6–13 | — | — | — |
| 1-3/4″ | 14–22 | 1.575″ | 1.870″ | — |
| 2″ | 6–13 | — | — | — |
| 2″ | 12–22 | 1.700″ | 1.995″ | — |
| 2-1/4″ | 6–13 | 1.805″ | 2.100″ | — |
| 2-1/2″ | 5–18 | 2.000″ | 2.375″ | — |
| 2-3/4″ | 4–10 | 2.232″ | 2.500″ | — |
| 3″ | 5–12 | 2.524″ | 2.834″ | 4″ |
| 3″ | 10–23 | 2.625″ | 3.000″ | — |
| 3-1/4″ | 7–14 |
Duplex Steel Tube Plugs Available Stock
| Duplex Tube Plug Variants | |
|---|---|
| Duplex Stainless Steel Tube Plug | Duplex S31803 Tube Plugs |
| Duplex Expandable Tube Plug | Duplex 2205 Pin Tube Plug |
| Duplex S32205 Boiler Tapered Tube Plug | Duplex Steel 2205 Tube Plugs |
| Duplex Threaded Tapered Tube Plugs | Duplex One-Piece Tube Plugs |
| Duplex UNS S31803 Collar Tube Plug | Duplex Steel Threaded Tapered Plugs |
| Duplex S31803 Condenser Tube Plug | Duplex Condenser Tube Plugging |
| Duplex Steel Boiler Tube Plugs | Duplex Metal Tapered Tube Plug |
| S31803 Duplex Steel Tube Plug | Duplex S31803 Tube Plug Supplier |
| SAF 2205 Tube Plug | Duplex Tube Plug Manufacturer |
| Duplex Steel S32205 Tube Plugs | Duplex Steel UNS S32205 Tube Plugs |
| Duplex 2205 Tube Plug Distributor | Duplex Steel Tube Plug Exporter |
| Duplex Stainless Steel Metal Tube Plugs | Duplex Tapered Tube Plugs |
| Duplex S31803 Pin Tube Plugs | Duplex Steel Heat Exchanger Tube Plug |
| Duplex Stainless Steel Tube Plugs Stockist | Duplex Steel Tube Plug Price |
Applications of Duplex Steel Tube Plugs
- Used to seal leaking or unused tubes in heat exchangers
- Installed in boilers and condensers for pressure retention and safety
- Suitable for high-temperature systems in power generation plants
- Ideal for chemical processing units with corrosive environments
- Commonly used in desalination plants due to chloride resistance
- Applied in oil & gas refineries for tube isolation in cooling units
- Utilized in pulp and paper mills for corrosive bleaching operations
- Effective in marine and offshore equipment exposed to seawater
- Used in pharmaceutical and food processing systems for leak prevention and hygiene
FAQs about Duplex Steel Tube Plug
What is a Duplex Steel Tube Plug used for?
A Duplex Steel Tube Plug is used to seal the end of tubes or pipes in heat exchangers, boilers, condensers, and other high-pressure systems, preventing leaks and isolating damaged or unused tubes.
Which industries commonly use duplex tube plugs?
They are widely used in chemical processing, oil & gas, power plants, desalination, pulp and paper, marine equipment, and food & pharmaceutical industries.
What grades of duplex stainless steel are available for tube plugs?
Common grades include Duplex 2205 (UNS S31803) for balanced performance and Super Duplex (UNS S32750/S32760) for extreme corrosion resistance and high-pressure applications.