The item
316L seamless Tubes with an outside diameter of 6.3 mm and a wall thickness of 0.9 mm. 304 plus 2–3% molybdenum. The standard answer to chlorides and mild acids.
This is a size we hold rather than one we have to roll. 304 plus 2–3% molybdenum. The standard answer to chlorides and mild acids. 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 316L seamless Tubes, OD 6.3 mm × 0.9 mm wall 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.
316L seamless Tubes with an outside diameter of 6.3 mm and a wall thickness of 0.9 mm. 304 plus 2–3% molybdenum. The standard answer to chlorides and mild acids.
Stainless Steel 316 and 316L, designated UNS S31600 / S31603, EN 1.4401 / 1.4404, AISI 316 / 316L, JIS SUS316 / SUS316L, GB S31608 / S31603 and Werkstoff X5CrNiMo17-12-2 / X2CrNiMo17-12-2.
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.
marine and offshore fittings, chemical and petrochemical process lines, pharmaceutical and sanitary equipment, heat exchanger and condenser tube, pulp and paper equipment and coastal architectural work. 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.

Rajgranth metals is top leading manufacturers, stockholders, exporters of Stainless steel (SS) seamless tubes are vital components in various industries, providing a reliable and durable solution for fluid transfer, structural support, and other critical applications. Among the many stainless steel grades available, Grade 316L stands out for its exceptional properties, particularly in environments where corrosion resistance and strength are essential. For industries requiring precise dimensions, such as 6.3 mm diameter and 0.9 mm thickness, Grade 316L seamless tubes offer a superior solution. In this article, we’ll dive into the unique properties, applications, and advantages of SS seamless tubes, specifically focusing on Grade 316L with these exact dimensions.
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The dimensions of 6.3 mm diameter and 0.9 mm thickness make this tube suitable for specialized applications requiring precision. The small diameter ensures that it can fit into tight spaces or be used in systems where space is a premium, such as in heat exchangers, condensers, or compact fluid transfer systems.
Seamless tubes are made by a process called extrusion, where a solid billet of steel is pierced to create a hollow tube. The billet is heated to high temperatures and then forced through a die to form the tube. This method ensures a smooth, continuous structure with no seams.
The cold-drawing process is then used to achieve the final diameter and wall thickness, ensuring tight tolerances and a perfect finish.
| Stainless Steel Tubes Dimension – (S.S. Tubes) | 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 |
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These tubes find use in several critical industries:
Our Stainless Steel Seamless Tube Used In Many Industries & Have Many Application
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