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Inox Steel India is one of the leading manufacturers, suppliers, and exporters of stainless steel seamless pipes in India, supplying to global industries across the GCC, Middle East, African nations, European countries, and both North & South America.
We specialize in seamless pipes made from premium stainless steel grades — 304, 304L, 316, 316L, 310, 321, and 347 — conforming to ASTM A312 and A376 standards.
With ISO, IBR, and PED certifications, every pipe from Inox Steel India is manufactured using precision cold-drawn and hot-finished techniques, ensuring consistent wall thickness, superior surface finish, and reliable performance under critical conditions.
Our stainless steel seamless pipes are widely used in chemical processing, oil & gas, power generation, pharmaceuticals, marine engineering, and heat exchanger systems — where strength, purity, and corrosion resistance define the life of the system.
A stainless steel seamless pipe is a hollow cylindrical tube manufactured without any welding seam, ensuring complete homogeneity in metal structure and superior pressure performance.
It is produced by piercing a solid stainless steel billet, elongating it into a tube through hot rolling or cold drawing, followed by annealing, pickling, and polishing to meet ASTM dimensional and metallurgical standards.
These properties make seamless pipes the first choice for industries where reliability, hygiene, and structural integrity are non-negotiable.
Below is our consolidated Stainless Steel Seamless Pipe Technical Datasheet, showing all grades and specifications (304, 304L, 316, 316L, 310, 321, 347) in accordance with ASTM A312 / A376.
Stainless Steel Seamless Pipe (ASTM A312 / A376) – Grades 304, 304L, 316, 316L, 310, 321, 347
| Parameter / Property | SS 304 | SS 304L | SS 316 | SS 316L | SS 310 / 310S | SS 321 | SS 347 |
| Standard / Specification | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 |
| Material Type | Austenitic Stainless Steel | Austenitic SS (Low C) | Molybdenum-Bearing SS | Molybdenum-Bearing SS (Low C) | High-Temp Chromium-Nickel SS | Titanium-Stabilized SS | Niobium-Stabilized SS |
| UNS Designation | S30400 | S30403 | S31600 | S31603 | S31000 / S31008 | S32100 | S34700 |
| Equivalent EN / DIN / JIS | 1.4301 / X5CrNi18-10 / SUS304 | 1.4307 / X2CrNi18-9 / SUS304L | 1.4401 / X5CrNiMo17-12-2 / SUS316 | 1.4404 / X2CrNiMo17-12-2 / SUS316L | 1.4841 / X15CrNi25-20 / SUS310S | 1.4541 / X6CrNiTi18-10 / SUS321 | 1.4550 / X6CrNiNb18-10 / SUS347 |
| Chemical Composition (% Max) | C ≤ 0.08, Mn ≤ 2.0, Si ≤ 1.0, Cr 18–20, Ni 8–11 | C ≤ 0.03, Cr 18–20, Ni 8–12 | C ≤ 0.08, Cr 16–18, Ni 10–14, Mo 2–3 | C ≤ 0.03, Cr 16–18, Ni 10–14, Mo 2–3 | C ≤ 0.08, Cr 24–26, Ni 19–22 | C ≤ 0.08, Cr 17–19, Ni 9–12, Ti ≥ 5×C | C ≤ 0.08, Cr 17–19, Ni 9–13, Nb ≥ 10×C |
| Tensile Strength (MPa) | ≥ 515 | ≥ 485 | ≥ 515 | ≥ 485 | ≥ 515 | ≥ 515 | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 | ≥ 170 | ≥ 205 | ≥ 170 | ≥ 205 | ≥ 205 | ≥ 205 |
| Elongation (%) | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 | ≥ 40 |
| Hardness (HRB) | ≤ 90 | ≤ 90 | ≤ 90 | ≤ 90 | ≤ 95 | ≤ 90 | ≤ 90 |
| Corrosion Resistance | Excellent in mild / oxidizing media | Superior weldability (no carbide precipitation) | High pitting & crevice resistance | Exceptional in chloride environments | Outstanding at high temperatures (oxidation-resistant up to 1100 °C) | Resistant to intergranular corrosion after welding | Similar to 321, better creep strength |
| Temperature Range (°C) | −196 °C to +870 °C | −196 °C to +870 °C | −196 °C to +870 °C | −196 °C to +870 °C | up to 1100 °C (intermittent 1150 °C) | up to 870 °C | up to 870 °C |
| Typical Applications | Food Processing, Chemical, Textile, Architecture | Dairy, Pharma, Cryogenic Equipment | Marine, Chemical Process, Pharma | Chloride Process, Shipbuilding, Desalination | Furnaces, Heat Exchangers, Kilns | Heat Exchangers, Exhaust Systems | Pressure Vessels, Petrochemical Plants |
| Available Sizes (NB / OD) | ½″ – 36″ NB / 6 mm – 610 mm | Same | Same | Same | ½″ – 20″ NB | ½″ – 16″ NB | ½″ – 16″ NB |
| Schedules (Thickness) | SCH 5 – SCH XXS | SCH 5 – SCH XXS | SCH 5 – SCH XXS | SCH 5 – SCH XXS | SCH 10 – SCH 160 | SCH 10 – SCH 160 | SCH 10 – SCH 160 |
| End Finishes | Plain, Bevelled, Threaded | Plain, Bevelled, Threaded | Plain, Bevelled, Threaded | Plain, Bevelled, Threaded | Plain, Bevelled | Plain, Bevelled | Plain, Bevelled |
| Testing Requirements | Hydro, Eddy Current, PMI | Hydro, Eddy Current, PMI | Hydro, Eddy Current, PMI | Hydro, Eddy Current, PMI | Hydro, UT, HT | Hydro, UT, PMI | Hydro, UT, PMI |
| Typical HS / HSN Code | 7304.41.00 | 7304.41.00 | 7304.41.00 | 7304.41.00 | 7304.41.00 | 7304.41.00 | 7304.41.00 |
| Equivalent ASTM / ASME | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 | ASTM A312 / A376 |
| Supply Condition | Annealed / Pickled / Polished | Annealed / Pickled / Polished | Annealed / Pickled / Polished | Annealed / Pickled / Polished | Hot Finished / Annealed | Annealed | Annealed |
| Certifications & Docs | MTC EN 10204 3.1 / 3.2, IBR, PED, CE | Same | Same | Same | PED, CE, TPI | IBR, PED, CE | IBR, PED, CE |
This table provides engineers and procurement specialists a complete comparative overview of chemical composition, mechanical strength, and temperature resistance — helping select the correct grade for each industrial requirement.
Choosing the right stainless steel seamless pipe depends on the application, environment, and compliance standards.
Here are the six crucial parameters to evaluate before selection:
Operating Environment:
Temperature & Pressure Ratings:
Select pipes with adequate wall thickness (SCH 10–XXS) per ASME B36.19 for high-pressure service.
Corrosion & Oxidation Resistance:
Use molybdenum-bearing grades (316/316L) for saline and acidic exposure.
Fabrication & Welding Compatibility:
Low-carbon versions (304L, 316L) prevent carbide precipitation during welding
Compliance & Certification:
Always ensure EN 10204 3.1 / 3.2, PED, CE, and IBR certifications for traceability
Surface Finish & End Configuration:
Pick from annealed, pickled, mirror-polished, or bright finish; plain or beveled ends as per project need.
These considerations ensure long-term system safety, reduced maintenance, and enhanced performance — especially in critical pressure and hygiene applications.
India:
GCC & Middle East:
Africa:
Europe & Americas:
Inox Steel India maintains ready stock and export logistics to all these regions with port dispatch from JNPT (Mumbai), Mundra, and Hazira — ensuring timely delivery and consistent quality for every order.
Stainless Steel Seamless Pipes from Inox Steel India serve as the lifelines of modern industries — carrying fluids, gases, and chemicals safely through extreme pressure, temperature, and corrosive conditions. Each grade offers unique mechanical and chemical properties optimized for particular applications.
SS 304 / 304L Seamless Pipes (ASTM A312 TP304 / TP304L)
SS 316 / 316L Seamless Pipes (ASTM A312 TP316 / TP316L)
SS 310 / 310S Seamless Pipes (ASTM A312 TP310 / TP310S)
SS 321 / 347 Seamless Pipes (ASTM A312 TP321 / TP347)
| NPS (Inch) | OD (mm) | Wall Thickness (SCH 40) | Approx. Weight (kg/m) |
| ½″ | 21.3 | 2.77 | 1.25 |
| 1″ | 33.4 | 3.38 | 2.45 |
| 2″ | 60.3 | 3.91 | 5.45 |
| 4″ | 114.3 | 6.02 | 14.90 |
| 6″ | 168.3 | 7.11 | 28.25 |
| 8″ | 219.1 | 8.18 | 43.30 |
| 10″ | 273.1 | 9.27 | 63.20 |
| 12″ | 323.9 | 9.53 | 84.25 |
| Grade / Standard | Size Range (OD) | Avg. Price INR / kg (F.O.B Mumbai) | Approx. USD / kg (F.O.B India) | Typical Use |
| SS 304 / 304L (ASTM A312) | 6 – 610 mm | ₹ 290 – ₹ 360 | $ 3.50 – $ 4.35 | General Corrosion & Hygienic Applications |
| SS 316 / 316L (ASTM A312) | 6 – 610 mm | ₹ 340 – ₹ 420 | $ 4.10 – $ 5.05 | Marine & Chemical Service |
| SS 310 / 310S (ASTM A312) | 12 – 508 mm | ₹ 520 – ₹ 650 | $ 6.25 – $ 7.80 | High-Temperature Applications |
| SS 321 / 347 (ASTM A312) | 12 – 406 mm | ₹ 480 – ₹ 620 | $ 5.75 – $ 7.45 | Heat-Resistant / Creep Strength Use |
Prices are indicative for standard finish and domestic dispatch; actual values depend on wall thickness, polish, and origin (SAIL, AMNS, JSPL, Nippon Yakin, Outokumpu).
This HSN classification applies to ASTM A312 and A376 pipes under Indian and international tariff codes for import / export transactions.
Every pipe we supply undergoes rigorous inspection and testing to ensure full compliance with ASTM and ASME standards.
Quality Tests Conducted:
All products are dispatched with MTC (EN 10204 3.1 / 3.2), IBR, PED, and Origin Certificates, ensuring traceability from melt to installation.
When engineers and buyers search for a “stainless steel seamless pipe supplier near Alankar Cinema, Mumbai”, Inox Steel India stands out as a trusted manufacturer and global exporter delivering quality, speed, and certification in every dispatch.
With decades of experience and strong stock holdings, we serve customers across India, UAE, Saudi Arabia, Oman, Nigeria, South Africa, Germany, Italy, USA, and Brazil, providing seamless pipes that meet ASTM A312 / A376 and ASME B36.19 standards.
Key Advantages Our Clients Rely On:
Our focus is not just on selling pipes — we build reliability into your supply chain.
| Industry | Application | Preferred Grade / Standard |
| Oil & Gas Refineries | Heat Exchangers · Process Lines · Condensers | SS 316 / 316L |
| Pharmaceutical & Biotech | Sterile Lines · Reactors · Piping Loops | SS 304L / 316L |
| Power & Energy | Boiler Tubes · Superheaters · Steam Condensers | SS 310 / 321 |
| Food & Beverage | Dairy Pipelines · Sugar Processing | SS 304 / 304L |
| Marine & Desalination | Sea Water Lines · Offshore Risers | SS 316L |
| Chemical & Petrochemical | Corrosive Process Lines · Reactors | SS 316 / 347 |
Each project demands precision — we match the grade, schedule, and coating exactly to service conditions.
All pipes are export-packed as per international shipping standards:
Regular Export Destinations: UAE · Oman · Qatar · Kuwait · Saudi Arabia · Nigeria · South Africa · Germany · Italy · UK · USA · Brazil · Mexico.
Our technical sales team responds within 24 hours with grade recommendation, price and lead time.
Whether you need 304L sanitary pipes for pharma, 316L for marine, or 310S for furnace applications, we have the inventory and expertise ready.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
steel@inoxsteelindia.in
+91 9930796690
Inox Steel India
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SS 316 contains molybdenum for superior resistance to chlorides and marine environments.
The HSN Code is 7304.41.00 for stainless steel seamless pipes and tubes.
Approx. ₹ 290 – ₹ 420 per kg (F.O.B Mumbai) or $ 3.50 – $ 5.05 per kg (F.O.B India).
Inox Steel India – an ISO and PED-certified manufacturer exporting to 60 + countries.
Yes — regular shipments to Dubai, Oman, Nigeria, and South Africa with CIF and FOB options.
Yes, we supply custom lengths (3 – 12 m) with bright annealed or mirror finish.
At Inox Steel India, every pipe represents quality, traceability, and trust.
Whether you’re sourcing for a chemical plant in Mumbai or a desalination project in UAE, we supply ASTM A312 / A376 seamless pipes that exceed expectations in performance and finish.
Export-Ready · Mill-Tested · ISO Certified · Trusted Worldwide