SS Seamless Tube Supplier
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Neeka Tubes is a reliable Stainless Steel Seamless Tubing manufacturer and supplier, delivering high-quality products to clients worldwide. Our SS seamless Tube is built for demanding uses—whether in high-pressure systems, sanitary pipelines, or corrosive environments. Manufactured through rotary piercing, cold drawing, and extrusion, each tube is smooth, weld-free, and built to perform under stress. We follow strict international standards, including ASTM A213 for heat exchanger and boiler tubes, ASTM A269 for general-purpose service, and ASTM A511 for mechanical applications.
We offer a wide range of grades such as Stainless Steel 304 Seamless Tube , Stainless Steel 310 Seamless Tube, Stainless Steel 316 Seamless Tube, and Stainless Steel 321 Seamless Tube, to meet diverse industry needs and offer good intergranular corrosion protection. We ensure that every product meets performance requirements by maintaining reliable stock, providing quick delivery and implementing tight quality control measures. Our ASTM A213 / A269 seamless tubes are known for their clean finishes, strict tolerances, and long service life in critical industries.
Table of Content
- Most Common Types of SS Seamless Tubing
- SS Seamless Tubing Specifications
- SS Seamless Tubing Dimensions Chart
- SS Seamless Tubing Thickness Chart
- SS Seamless Tubing Packing & Marking
- Why Choose Neeka Tubes for Stainless Steel Seamless Tubing
- Stainless Steel Seamless Tubing Applications Across Industries
- FAQ
Stainless Steel Seamless Tubes, Seamless Stainless Steel Tubes, Stainless Steel Seamless Tube Suppliers, Seamless SS Tube, Seamless Stainless Steel Tube Manufacturers, Seamless Stainless Steel Tube Sizes, Seamless SS Tubing
Features of Stainless Steel Seamless Tubing
- Superior Strength & Corrosion Resistance: Due to their structure and composition, stainless steel seamless tubes provide mechanical strength and corrosion properties that can’t be achieved with welded tubing. The lack of welds makes them more reliable than welded tubes in high-stress and corrosive applications.
- Precision & Smooth Finish: Seamless tubes are made with very tight dimensional tolerances, which means that the wall thickness is always the same and the inside is always smooth. This makes the flow more efficient and helps with precise fitting in important situations.
- High Melting Point & Density: The high melting point allows stainless steel seamless tubes to perform reliably under elevated temperatures. Their balanced density ensures structural stability without compromising handling or installation.
- Leak Free Performance: Seamless construction gets rid of weld joints which lowers the chance of leaks when under pressure. This means that the tubes can be used in systems that need to work under a lot of pressure and are very important for safety.
- Versatile & Durable: Stainless steel seamless tubes are suitable for a wide range of industrial, structural, and process applications. Their durability ensures long service life with minimal maintenance requirements.
Seamless vs Welded Stainless Steel Tubing – Key Differences
| Parameter | Seamless Stainless Steel Tubing | Welded Stainless Steel Tubing |
|---|---|---|
| Manufacturing Process | Made from a solid billet using extrusion, piercing, and drawing (no joints) | Made by rolling stainless steel sheets/strips and welding the seam |
| Structure | Continuous, homogeneous structure (no seam) | Has a longitudinal weld seam |
| Strength | Higher strength due to absence of weak points | Slightly lower strength due to weld seam stress concentration |
| Pressure Resistance | Excellent for high-pressure applications | Suitable for low to moderate pressure systems |
| Corrosion Resistance | Superior (no seam = fewer corrosion risks) | Good, but weld seam may be prone to corrosion over time |
| Wall Thickness Uniformity | Slight variation possible during extrusion | More uniform due to sheet-based manufacturing |
| Surface Finish | Smooth but may require additional finishing | Better finish and tighter tolerances (especially cold-formed) |
| Cost | Expensive due to complex production process | More cost-effective and economical |
| Availability | Limited sizes and lengths | Widely available in various sizes and longer lengths |
| Production Speed | Slower manufacturing process | Faster production, suitable for mass production |
| Diameter Range | Better for smaller diameters and thick walls | Ideal for larger diameters and thin walls |
| Weld Integrity | No weld, hence no risk of weld failure | Requires testing (NDT, radiography) to ensure weld quality |
| Applications | Oil & gas, chemical plants, high-pressure boilers, aerospace | Construction, HVAC, food processing, structural uses |
| Reliability in Critical Systems | Highly reliable for critical applications | Less preferred in critical/high-risk environments |
Most Common Types of Stainless Steel Seamless Tubing
SS Seamless Tube
SS Seamless Round Tube
SS Seamless square Tube
SS Seamless Rectangular Tube
SS Seamless Steel Coil Tube
Stainless Steel Capillary Seamless Tube
Stainless Steel Seamless Polished Tube
Stainless Steel Cold Drawn Seamless Tube
Stainless Steel Seamless Tubing Specifications
| Tube Range | 1/2″ OD – 12″ OD, Guage: 25 SWG – 10 SWG |
| Outer Diameter | 3.00 mm – 219.10 mm |
| Wall Thickness | 0.40 mm – 12.70 mm |
| Schedules | 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH |
| Length | Upto 30 meters, Custom Cut Lengths |
| Specifications | ASTM A213 / ASTM SA213 |
| Types | Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes |
Contact Neeka tubes today for a best offer & competitive quotation Of Stainless Steel Seamless Tubing
Please Call on +91 7700067892 or drop an E-Mail : sales@neekatubes.net
Stainless Steel Seamless Tubing Dimensions
| Nominal Bore Chart | Outside Diameter (O.D) | Schedule 5S | Schedule 10S | Schedule 40S | Schedule 80S | Schedule 160S | Schedule XXS | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | Wt mm | Weight (Kg./mt) | ||
| 3 | 10.3 | 1.24 | 0.276 | 1.24 | 0.28 | 1.73 | 0.37 | 2.41 | 0.47 | – | – | – | – |
| 6 | 13.7 | 1.24 | 0.390 | 1.65 | 0.49 | 2.24 | 0.631 | 3.02 | 0.80 | – | – | – | – |
| 10 | 17.1 | 1.24 | 0.490 | 1.65 | 0.63 | 2.31 | 0.845 | 3.20 | 1.10 | – | – | – | – |
| 15 | 21.3 | 1.65 | 0.800 | 2.11 | 1.00 | 2.77 | 1.27 | 3.75 | 1.62 | 4.75 | 1.94 | 7.47 | 2.55 |
| 20 | 26.7 | 1.65 | 1.03 | 2.11 | 1.28 | 2.87 | 1.68 | 3.91 | 2.20 | 5.54 | 2.89 | 7.82 | 3.63 |
| 25 | 33.4 | 1.65 | 1.30 | 2.77 | 2.09 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 | 9.09 | 5.45 |
| 40 | 48.3 | 1.65 | 1.91 | 2.77 | 3.11 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 | 10.16 | 9.54 |
| 50 | 60.3 | 1.65 | 2.40 | 2.77 | 3.93 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.1 | 11.07 | 13.44 |
| 100 | 114.3 | 2.11 | 5.84 | 3.05 | 8.36 | 6.02 | 16.07 | 8.56 | 22.3 | 13.49 | 33.54 | 17.12 | 41.03 |
| 200 | 219.1 | 2.77 | 14.79 | 3.76 | 19.96 | 8.18 | 42.6 | 12.7 | 64.6 | 23.0 | 111.2 | 22.23 | 107.8 |
| 300 | 323.9 | 3.96 | 31.36 | 4.57 | 36.07 | 12.70 | 97.5 | 17.48 | 131.0 | 30.23 | 238.76 | 35.56 | 282.79 |
| 600 | 609.6 | 5.54 | 82.47 | 6.35 | 94.45 | 17.48 | 255.41 | 30.96 | 442.08 | 59.54 | 808.22 | – | – |
Thickness Chart of SS Seamless Tubing
| Sizes | SCH 10 304 Grade Stainless Steel Pipe | O.D | |
| DIA | |||
| Inch | DN | Thickness | Millimetre (mm) |
| 1 Inch | DN 25 | 2.77 | 33.4 |
| 2 Inch | DN 50 | 2.77 | 60.3 |
| 3 Inch | DN 80 | 3.05 | 88.9 |
| 4 Inch | DN 100 | 3.05 | 114.3 |
| 5 Inch | DN 125 | 3.43 | 141.3 |
| 6 Inch | DN 150 | 3.43 | 168.3 |
| 8 Inch | DN 200 | 3.76 | 219.1 |
| 10 Inch | DN 250 | 4.19 | 273.1 |
| 11/2 Inch | DN 40 | 2.77 | 48.3 |
| 11/4 Inch | DN 32 | 2.77 | 24.2 |
| 12 Inch | DN 300 | 4.57 | 323.9 |
| 14 Inch | DN 350 | 6.35 | 355.6 |
| 16 Inch | DN 400 | 6.35 | 406.4 |
| 18 Inch | DN 450 | 6.35 | 457.2 |
| 21/2 Inch | DN 65 | 3.05 | 73 |
| 22 Inch | DN 550 | 6.35 | 558.8 |
| 24 Inch | DN 600 | 6.35 | 609.6 |
| 34 Inch | DN 850 | 7.92 | 863.6 |
| 31/2 Inch | DN 90 | 3.05 | 101.6 |
| 36 Inch | DN 900 | 7.92 | 914.4 |
Packing & Marking
We use secure export packaging for SS seamless tubes to protect every order during shipping. Each tube is capped, wrapped in plastic or bubble wrap, and packed into strong, fumigated wooden boxes. We ensure clear, seamless stainless steel tube marking for traceability. Every tube is marked with size, grade, heat number and country of origin. Custom markings are available on request. This careful packing and marking process helps avoid damage, mix-ups, or delays so you get exactly what you ordered, in perfect condition.
Quality Tests & Certifications
Why Choose Neeka Tubes for Stainless Steel Seamless Tubing
Neeka Tubes is a reputable SS seamless tube supplier in India, known for providing precision-engineered tubing with consistent quality, quick lead times, and customized service. Whether you require standard sizes or unique solutions, we have you covered.
- Built to global standards: All stainless steel seamless tubing meets ASTM A213, A269, and A511 ready for international use.
- ISO 9001:2015 certified manufacturing: Each tube is manufactured under strict quality control procedures to assure performance, dependability and consistency.
- Custom specs available: Choose your size, wall thickness, and surface finish. We tailor tubing to match exact application needs.
- Large ready stock for fast delivery: As a leading stainless steel tube stockist, we carry a wide range of dimensions for urgent and bulk orders.
- Export-ready with full support: Get secure packaging, proper marking, and thorough documentation to ensure a seamless global transport.
- Technical support: Our technical team offers clear, honest advice to guide you on grades, specs, and best-fit solutions.
Searching for ready stock of Stainless Steel Seamless Tubing in Mumbai?
Stainless Steel Seamless Tubing Applications Across Industries
Stainless Steel Seamless Tubing is used in industries that require durability, pressure resistance, and corrosion prevention.
FAQ
What standards do your seamless stainless tubes meet?
They typically meet ASTM A213, A269, A312, and equivalent international standards.
What grades of stainless seamless tubing are commonly available?
Common grades include 304, 304L, 316, 316L, and other special alloys on request.
What size range is available for stainless steel seamless tubing?
Sizes usually range from 1/8″ OD to 12″ OD with varying wall thicknesses.
Are these tubes suitable for high-pressure or high-temperature applications?
Yes, seamless tubes are ideal for both high-pressure and high-temperature conditions.
Is stainless steel seamless tubing leak-proof?
Yes, due to the absence of welds, seamless tubes offer excellent leak resistance.
Does temperature affect service life?
Yes, prolonged exposure to extreme temperatures can impact material longevity, though stainless steel performs well in harsh environments.
Are test certificates provided with seamless tubing orders?
Yes, Mill Test Certificates (MTC) or third-party inspection reports are provided upon request.