Phone
+91 9769961320Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004© Alrights reserved
by Tubotech Alloys INC
Tubotech is a renowned Duplex 31803/32205 Instrument Fittings manufacturer, supplier, and exporter, presenting a top-class variety of precision-engineered fittings for challenging industrial programs. Our expertise lies in delivering high-performance instrument fittings made from superior Duplex stainless steel grades, known for their tremendous strength, corrosion resistance, and durability.
Duplex 31803 (also known as UNS S31803) and Duplex 32205 (UNS S32205) are nitrogen-rich duplex stainless steels that integrate the applicable traits of austenitic and ferritic stainless steels. These grades provide first-rate resistance to pitting, crevice corrosion, and stress corrosion cracking, making them pretty dependable in extremely challenging conditions. We design and manufacture Duplex 31803/32205 Instrument Fittings that ensure leak-free, long-term standard performance in harsh environments, including offshore drilling platforms, chemical plants, & power stations.
Whether you’re searching for tube fittings, adapters, connectors, or custom solutions, we are your trusted Duplex 31803/32205 Instrument Fittings supplier and exporter.



| Property | Specification |
|---|---|
| Material Grade | Duplex Stainless Steel 31803 / 32205 |
| Standards | ASTM A182 / ASME SA182 |
| Size Range | 1/8” to 2” (Tube OD) |
| Pressure Rating | Up to 6000 PSI |
| Temperature Rangee | -50°C to +300°C |
| Thread Types | NPT, BSPT, BSPP, UNF, Metric |
| Surface Finish | Pickled / Bright Annealed / Electropolished |
| Connection Types | Compression, Welded, Threaded |
| Testing | Hydrostatic, Pneumatic, PMI, DP |
| Certification | ISO 9001:2015, PED, NACE MR0175, CE |
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum(Mo) | 2.5 – 3.5 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 |
| Nitrogen (N) | 0.14 – 0.20 |
| Iron (Fe) | Balance |
The balanced chemical composition contributes to extra-perfect resistance in opposition to localized corrosion and superior tensile strength.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 620 MPa |
| Yield Strength | ≥ 450 MPa |
| Elongation | ≥ 25% |
| Hardness (HRB) | ≤ 100 |
| Impact Toughness | Excellent at sub-zero temps |
These features make Duplex 31803/32205 the favored choice for challenge-essential operations requiring high strength and corrosion resistance under dynamic loading.
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
We offer a comprehensive range of Duplex 31803/32205 Instrument Fittings in diverse configurations:
All fittings are synthetic to worldwide requirements and go through rigorous first-rate quality assessments to ensure reliability and consistency.
Tubotech stocks and components for Duplex 31803/32205 Instrument Fittings in a wide variety of sizes to help create types of machine configurations:
| Size (Tube OD) | Fitting Type | Approx. Weight (g) |
|---|---|---|
| 1/4” | Union | 60 |
| 3/8” | Male Connector | 75 |
| 1/2” | Elbow Union | 130 |
| 3/4” | Tee Union | 210 |
| 1” | Cross Union | 290 |
| 1.5” | Socket Weld Tee | 430 |
Weights vary with wall thickness, design, and thread type.
As a leading Duplex 31803/32205 Instrument Fittings exporter, we cater to numerous industries in which safety, reliability, and corrosion resistance are paramount:
Our fittings are engineered to preserve integrity under competitive media, temperature fluctuations, and mechanical vibrations.
We are the main Duplex 31803/32205 Instrument Fittings manufacturer with an international reputation for delivering excellence. Here’s why customers across industries rely on us:
If you are searching for a reliable Duplex 31803/32205 Instrument Fittings dealer, manufacturer, or exporter, appearance no further than Tubotech. Our experience, innovation, and customer-first method make us your best partner for high-quality performance instrumentation fittings.
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.
WhatsApp us