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Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004Tubotech Alloys is a leading manufacturer, supplier, and exporter of Duplex Steel 31803 / 32205 Instrumentation Fittings in Italy. We provide premium-quality instrumentation fittings engineered for superior corrosion resistance, high strength, and excellent durability in demanding industrial environments. Our Duplex Steel UNS S31803 and UNS S32205 Instrumentation Fittings are widely used across oil & gas, petrochemical, offshore, power generation, chemical processing, and marine industries throughout Italy.
Manufactured according to international standards, our Duplex Steel Instrumentation Fittings offer excellent resistance to chloride stress corrosion cracking, pitting, crevice corrosion, and erosion, making them ideal for high-pressure and high-temperature applications.
Tubotech Alloys supplies a comprehensive range of Duplex Steel 31803 / 32205 Instrumentation Fittings, including:
These fittings ensure leak-proof connections and reliable performance in critical fluid and gas systems.
| Element | UNS S31803 (%) | UNS S32205 (%) |
|---|---|---|
| Chromium (Cr) | 21.0 – 23.0 | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 | 3.0 – 3.5 |
| Nitrogen (N) | 0.08 – 0.20 | 0.14 – 0.20 |
| Carbon (C) | 0.03 Max | 0.03 Max |
| Manganese (Mn) | 2.0 Max | 2.0 Max |
| Silicon (Si) | 1.0 Max | 1.0 Max |
| Phosphorus (P) | 0.03 Max | 0.03 Max |
| Sulfur (S) | 0.02 Max | 0.02 Max |
| Iron (Fe) | Balance | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 620 MPa Min |
| Yield Strength | 450 MPa Min |
| Elongation | 25% Min |
| Hardness | 290 HB Max |
| Density | 7.8 g/cm³ |
| Modulus of Elasticity | 200 GPa |
These outstanding mechanical properties provide excellent performance under extreme operating conditions.
Our Duplex Steel Instrumentation Fittings are extensively used in:
Used in offshore platforms, pipelines, instrumentation systems, and subsea equipment.
Ideal for handling aggressive chemicals and corrosive media.
Suitable for reactors, process instrumentation, and fluid transfer systems.
Provides excellent seawater corrosion resistance.
Used in steam lines, hydraulic systems, and instrumentation assemblies.
Preferred for high-chloride environments and seawater applications.
Offers durability in chemical bleaching operations.
Ensures contamination-free fluid handling and process control.
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
Tubotech Alloys has earned a strong reputation as a trusted supplier of Duplex Steel Instrumentation Fittings in Italy by delivering exceptional quality and customer satisfaction.
All fittings are manufactured from certified raw materials and undergo stringent quality inspections.
Products comply with ASTM, ASME, DIN, EN, and ISO specifications.
Comprehensive inventory of standard and customized instrumentation fittings.
Cost-effective solutions without compromising quality.
Efficient logistics and timely deliveries to industrial sectors throughout Italy.
State-of-the-art production technology ensures precision and reliability.
Dedicated engineering support for selecting the right instrumentation fitting solutions.
Serving clients across Europe, the Middle East, Asia, and other international markets.
| Specification | Details |
|---|---|
| Material Grade | UNS S31803, UNS S32205 |
| Standard | ASTM A182, ASTM A479 |
| Size Range | 1/8″ to 2″ |
| Connection Type | Compression, Threaded, Welded |
| Pressure Rating | Up to 10,000 PSI |
| Surface Finish | Pickled, Passivated, Polished |
| Testing | Hydrostatic, PMI, Mechanical Testing, NDT |
| Certification | EN 10204 3.1, MTC |
Duplex Steel 31803 / 32205 Instrumentation Fittings are high-strength corrosion-resistant fittings used in instrumentation and process control systems for fluid and gas applications.
UNS S32205 is an enhanced version of UNS S31803 with tighter chemical composition controls and improved corrosion resistance properties.
They are widely used in oil & gas, petrochemical, marine, desalination, power generation, and chemical processing industries.
Yes, Duplex Steel 31803 and 32205 offer excellent resistance to seawater corrosion, pitting, and chloride-induced stress corrosion cracking.
Tubotech Alloys offers certified quality products, competitive pricing, customized solutions, international standards compliance, and reliable delivery across Italy and global markets.
Upgrade your assembly with Tubotech for excellence and built to closing. Contact us nowadays to get a quote or examine more about our product range.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.
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