The item
Super Duplex seamless Pipes with an outside diameter of 88.9 mm in schedule 40. Roughly equal austenite and ferrite. Around twice the yield strength of 316L.
This is a size we hold rather than one we have to roll. Roughly equal austenite and ferrite. Around twice the yield strength of 316L. Supplied with a mill test certificate to EN 10204 3.1 as standard.
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
Rajgranth Metal & Alloys stocks and supplies Super Duplex seamless Pipes, OD 88.9 mm × SCH 40 from Mumbai, with the material, tests and documentation covered by our ISO 9001:2015 quality system. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.
Super Duplex seamless Pipes with an outside diameter of 88.9 mm in schedule 40. Roughly equal austenite and ferrite. Around twice the yield strength of 316L.
Duplex and Super Duplex Stainless Steel, designated UNS S31803 / S32205 / S32550 / S32750 / S32760, EN 1.4462 / 1.4507 / 1.4501, AISI F51 / F60 / F53 / F55, JIS SUS329J3L, GB S22053 and Werkstoff X2CrNiMoN22-5-3 / X2CrNiMoCuWN25-7-4.
Standards include ASTM A213 / ASME SA-213, ASTM A269, ASTM A312 / ASME SA-312, ASTM A376 / ASME SA-376, ASTM A789 / ASME SA-789, ASTM A790 / ASME SA-790, ASTM A268 / ASME SA-268 and ASTM A511. Finishes and conditions include Bright Annealed (CFA), Solution Annealed (CFD), Electro Polished (EP), Polished (APP), Annealed and Pickled (AP), Mirror Polish, Matt Polish and Cold Drawn.
offshore and subsea piping, seawater cooling and desalination, chemical tankers and cargo systems, sour gas service and pressure vessels where weight matters. We supply across India and export to markets in the Middle East, Africa, Europe, Asia, North America and South America.
Send the quantity, standard and any special requirement and we will confirm availability. Material is supplied with documentation, tested in house across 18 listed testing facilities, and covered by our ISO 9001:2015 quality management system.
Cut to length on request
3.2 with third-party inspection on request
The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.

We are leading manufacturers, stockholders & exporters of stainless steel seamless pipes, Super Duplex SS Seamless Pipes stand out for their exceptional strength, corrosion resistance, and durability. These pipes, with a diameter of 88.9mm and a thickness corresponding to Schedule 40 (Sch 40), are ideal for industries demanding top-tier material performance, especially in harsh and corrosive environments.
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Super Duplex stainless steel is a blend of austenitic and ferritic grades, offering a perfect balance of mechanical strength and superior corrosion resistance. Its high molybdenum and chromium content ensures that these pipes resist pitting, stress corrosion cracking, and crevice corrosion, even in chloride-rich environments such as marine or chemical processing industries.
Our Super Duplex SS seamless pipes (88.9mm X Sch 40) are manufactured to meet stringent international standards, such as:
At Alcona Tex Engineers, we ensure that every pipe undergoes rigorous testing for quality assurance, including hydrostatic tests, eddy current testing, and ultrasonic testing, ensuring that you get only the best material for your project.
| Stainless Steel Pipes Dimension – (S.S. Pipes) | 13 | 1 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wall thickness in mm. | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.6 | 3 | 3.2 | 3.6 |
| O.D. in mm. | Weight in kg/meter | 12 | 1 | |||||||||
| 6 | 0.069 | 0.081 | 0.093 | 0.104 | 0.125 | 0.144 | 0.176 | – | – | – | – | – |
| 9.52 | 0.112 | 0.134 | 0.154 | 0.174 | 0.213 | 0.249 | 0.317 | – | – | – | – | – |
| 10 | 0.119 | 0.141 | 0.163 | 0.184 | 0.225 | 0.264 | 0.336 | – | – | – | – | – |
| 12.7 | 0.153 | 0.182 | 0.21 | 0.238 | 0.293 | 0.345 | 0.444 | – | – | – | – | – |
| 14 | 0.169 | 0.201 | 0.233 | 0.264 | 0.325 | 0.384 | 0.496 | – | – | – | – | – |
| 15.87 | 0.192 | 0.229 | 0.266 | 0.301 | 0.372 | 0.44 | 0.571 | 0.694 | – | – | – | – |
| 19 | 0.231 | 0.276 | 0.32 | 0.364 | 0.45 | 0.534 | 0.696 | 0.85 | 1.066 | 1.2 | 1.264 | – |
| 25 | 0.306 | 0.366 | 0.425 | 0.484 | 0.6 | 0.714 | 0.936 | 1.15 | 1.456 | 1.65 | 1.744 | 1.926 |
| 25.4 | 0.311 | 0.372 | 0.432 | 0.492 | 0.61 | 0.726 | 0.952 | 1.17 | 1.482 | 1.68 | 1.776 | 1.962 |
| 31.8 | – | – | – | – | – | 0.918 | 1.208 | 1.49 | 1.898 | 2.16 | 2.288 | 2.538 |
| 38 | – | – | – | – | – | 1.104 | 1.456 | 1.8 | 2.301 | 2.625 | 2.784 | 3.096 |
| 44.5 | – | – | – | – | – | 1.299 | 1.716 | 2.125 | 2.724 | 3.113 | 3.304 | 3.681 |
| 50.8 | – | – | – | – | – | 1.488 | 1.968 | 2.44 | 3.133 | 3.585 | 3.808 | 4.248 |
| 63.5 | – | – | – | – | – | – | 2.476 | 3.075 | 3.959 | 4.538 | 4.824 | 5.391 |
| 76.1 | – | – | – | – | – | – | 2.98 | 3.705 | 4.778 | 5.483 | 5.832 | 6.525 |
| 101.6 | – | – | – | – | – | – | 4 | 4.98 | 6 | 7 | 7,872 | 8.82 |
| CHEMICAL COMPOSITION (IN PERCENTAGE) | 11 | 1 | ||||||||
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrogen (Max) | Cu/ Others |
| 301 | 0.15 | 2 | 0.045 | 0.03 | 1 | 16.00 – 18.00 | 6.00 – 8.00 | – | 0.1 | – |
| 304 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 10.50 | – | 0.1 | – |
| 304L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 12.00 | – | 0.1 | – |
| 310S | 0.08 | 2 | 0.045 | 0.03 | 1.5 | 24.00- 26.00 | 19.00 – 22.00 | – | – | – |
| 316 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 316L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 317 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 14.00 | 3.00 – 4.00 | 0.1 | – |
| 317L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 15.00 | 3.00 – 4.00 | 0.1 | – |
| 321 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 12.00 | – | 0.1 | Ti5 ( C + N ) Min or 0.70 max |
| 347 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 13.00 | – | – | Cb= 10x ( C Min ) or 1.00 Max |
| 409 | 0.08 | 1 | 0.04 | 0.01 | 1 | 10.50 – 11.75 | 0.5 | – | – | Ti= 6x (C+ N ) Min or 0.70 Max |
| 409M | 0.03 | 0.81.2 | 0.03 | 0.03 | 0.40.75 | 11.00- 12.00 | 1.5 max. | – | – | Ti= 6x (C) Min or 0.70 Max |
| 410S | 0.08 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.6 | – | – | – |
| 410 | 0.15 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.75 | – | – | – |
| 420 | 0.35 | 0.5 | 0.035 | 0.015 | 0.5 | 12.00 – 13.00 | 0.20.3 | – | – | – |
| 430 | 0.12 | 1 | 0.04 | 0.03 | 1 | 16.00 – 18.00 | 0.75 | – | – | – |
| JSL AUS | 0.08 | 7.08.0 | 0.07 | 0.03 | 0.75 | 15.50 – 16.50 | 4.25 – 4.75 | – | – | 0.9 – 1.10 |
| JS- 203 | 0.08 | 9.2510.25 | 0.07 | 0.03 | 0.75 | 14.25 – 15.25 | 2.25 – 2.75 | – | – | 1.60- 2.0 |
| 301M | 0.1 | 4.55.5 | 0.06 | 0.03 | 0.75 | 14.50 – 15.50 | 6.0 – 7.0 | – | – | 1.70- 1.90 |
| * Thickness of 1.27mm & below will have elongation of 20% min. | 11 | 1 |
|---|
| MECHANICAL PROPERTIES | 6 | 1 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade | 1 | 2 | Tensile Strength Mpa, (Min) | 1 | 2 | Yield Strength Mpa, (Min) | 1 | 2 | %Age Elongation in 50mm gauge length min | 1 | 2 | Hardness (Max) | 2 | 1 |
| BHN | Rb | |||||||||||||
| 301 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 304 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 304L | 485 | 170 | 40 | 201 | 92 | |||||||||
| 310S | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316L | 485 | 170 | 40 | 217 | 95 | |||||||||
| 317 | 515 | 205 | 35 | 217 | 95 | |||||||||
| 317L | 515 | 205 | 40 | 217 | 95 | |||||||||
| 321 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 347 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 409 | 380 | 170 | 20 | 179 | 88 | |||||||||
| 409M | 430 | 275 | 20 | 187 | 90 | |||||||||
| 410S | 415 | 205 | 22 | 183 | 89 | |||||||||
| 410 | 450 | 205 | 20 | 217 | 89 | |||||||||
| 420 | 700( max ) | – | 15 | 217 | 95 | |||||||||
| 430 | 450 | 205 | 22 | 183 | 89 | |||||||||
| JSL AUS | 515 | 205 | 40 | 217 | 95 | |||||||||
| JS- 203 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 301M | 515 | 205 | 40 | 217 | 95 |
Tell us the quantity and where it is going. We will confirm stock and come back with price the same working day.