Duplex steel pipes are widely recognized for their superior strength, corrosion resistance, and cost-effectiveness, making them a preferred choice across multiple industries. Combining the properties of both austenitic and ferritic stainless steels, these pipes deliver excellent performance in demanding environments such as chemical processing, oil & gas, and marine applications. Products like duplex pipe, duplex stainless steel pipe, and super duplex pipe are engineered to handle high pressure, extreme temperatures, and aggressive media.
At Metinox Overseas, we specialize in manufacturing and supplying high-quality duplex steel pipes that meet international standards such as ASTM A790 and ASTM A789. Our extensive product range includes duplex 2205 pipe, super duplex pipe fittings, and stainless steel duplex pipe solutions tailored to diverse industrial needs. With a focus on precision, durability, and performance, we ensure that every product undergoes strict quality checks.
Duplex stainless steel pipes also offer excellent resistance to stress corrosion cracking and pitting, which makes them ideal for long-term usage in harsh conditions. Their higher mechanical strength compared to conventional stainless steel reduces the need for thicker materials, resulting in cost savings. Whether you are looking for duplex pipe fittings manufacturers in India or reliable suppliers of 2205 duplex tubing, Metinox Overseas delivers consistent quality and competitive pricing.
Request a quote now!| Specification | Details |
|---|---|
| Standards | ASTM A790 / ASTM A789 |
| Grades | Duplex 2205, Super Duplex 2507 |
| Type | Seamless / Welded |
| Size Range | 1/2" NB to 24" NB |
| Thickness | SCH 10 to SCH XXS |
| Form | Round, Square, Rectangular |
| Length | Single Random, Double Random, Custom |
| Element | 2205 (%) | 2507 (%) |
|---|---|---|
| Chromium | 22.0 – 23.0 | 24.0 – 26.0 |
| Nickel | 4.5 – 6.5 | 6.0 – 8.0 |
| Molybdenum | 3.0 – 3.5 | 3.0 – 5.0 |
| Carbon | ≤ 0.03 | ≤ 0.03 |
| Nitrogen | 0.14 – 0.20 | 0.24 – 0.32 |
| Property | 2205 | 2507 |
|---|---|---|
| Tensile Strength (MPa) | ≥ 620 | ≥ 800 |
| Yield Strength (MPa) | ≥ 450 | ≥ 550 |
| Elongation (%) | ≥ 25 | ≥ 15 |
| Hardness (HB) | ≤ 293 | ≤ 310 |
| Standard | Grade |
|---|---|
| UNS | S31803 / S32205 |
| EN | 1.4462 |
| ASTM | A790 / A789 |
| Super Duplex UNS | S32750 |
| EN Super Duplex | 1.4410 |
| Product | Price (INR/Kg) |
|---|---|
| Duplex 2205 Pipe | ₹250 – ₹350 |
| Super Duplex Pipe | ₹400 – ₹600 |
| Duplex Pipe Fittings | ₹300 – ₹500 |
| Super Duplex Fittings | ₹450 – ₹700 |
Note: Prices may vary based on size, grade, and market conditions.
| Nominal Size | Outer Diameter | Thickness |
|---|---|---|
| 1/2" | 21.3 mm | SCH 10–160 |
| 1" | 33.4 mm | SCH 10–160 |
| 2" | 60.3 mm | SCH 10–160 |
| 4" | 114.3 mm | SCH 10–160 |
| 8" | 219.1 mm | SCH 10–160 |
| 24" | 609.6 mm | SCH 10–XXS |
Duplex steel pipes are widely used across industries due to their excellent strength, corrosion resistance, and long service life. Below are the key applications:
Duplex steel pipes are widely used in industries such as oil & gas, chemical processing, marine, desalination plants, and power generation. Their high strength and corrosion resistance make them ideal for harsh environments where standard stainless steel may fail.
Duplex pipe (like 2205 grade) offers a balanced mix of strength and corrosion resistance, while super duplex pipe provides higher chromium, molybdenum, and nickel content, making it more resistant to extreme corrosive conditions such as seawater and acidic environments.
Most duplex stainless steel pipes are manufactured as per ASTM A790 and ASTM A789 standards. These standards ensure proper chemical composition, mechanical strength, and performance for industrial applications.
Yes, duplex stainless steel pipes offer almost double the strength of conventional stainless steel while providing better resistance to pitting, stress corrosion cracking, and crevice corrosion, making them more cost-effective in long-term use.
Duplex steel pipes are available in a wide range of sizes, from 1/2 inch NB to 24 inch NB. They also come in various schedules such as SCH 10, SCH 40, SCH 80, and SCH XXS depending on application requirements.
Duplex steel pipe is a type of stainless steel pipe made from a dual-phase microstructure of austenite and ferrite. This combination gives it higher strength and better corrosion resistance compared to standard stainless steel pipes. It is widely used in industries requiring durability and performance under harsh conditions.
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