Home > Seamless Pipe > ASTM A312 / ASME SA312
Inox Steel India is one of India’s leading manufacturers and global exporters of ASTM A312 / ASME SA312 Stainless Steel Seamless Pipes in TP304 and TP316L grades. These austenitic stainless steel pipes are widely used in chemical processing, pharmaceuticals, marine systems, food & dairy industries, oil & gas, petrochemicals, and high-corrosion environments.
We specialize in supplying hygienic, corrosion-resistant, and high-strength stainless steel seamless pipes that meet stringent global quality norms. Our TP304 and TP316L pipes are produced from high-purity stainless billets, hot-extruded and cold-drawn to achieve excellent dimensional accuracy, surface finish, and structural reliability.
Every pipe undergoes hydro testing, eddy current testing, ultrasonic inspection, hardness testing, PMI testing, tensile testing, and dimensional accuracy checks to ensure complete compliance with ASTM A312, ASME SA312, and EN specifications. As a trusted stainless steel pipe manufacturer in India, we offer both standard and custom sizes ranging from ½″ to 24″ NPS in SCH 5 to SCH XXS.
TP304 stainless steel is the most widely used grade for general industrial applications, while TP316L is the premium low-carbon, molybdenum-bearing grade preferred for marine, pharmaceutical, chemical, and high-chloride environments.
ASTM A312 covers seamless austenitic stainless steel pipes suitable for:
These pipes offer excellent:
This process yields highly corrosion-resistant, hygienic, and reliable stainless steel seamless pipes.
| Feature | TP304 | TP316L |
|---|---|---|
| Corrosion Resistance | Excellent | Superior (Mo added) |
| Marine / Chloride Resistance | Good | Ideal |
| Acid Resistance | Moderate | High |
| Hygienic / Pharma Use | Very Good | Exceptional |
| Weldability | Excellent | Superior (Low carbon) |
| Typical Use | Food, Chemical, Industrial | Pharma, Marine, Chemical |
| Parameter / Property | TP304 | TP316L |
|---|---|---|
| Material Type | Austenitic Stainless Steel | Austenitic Stainless Steel |
| Standard | ASTM A312 / ASME SA312 | ASTM A312 / ASME SA312 |
| Grade Name | 304 | 316L |
| Low Carbon Variant | 304L (Optional) | 316L (Yes – Low Carbon) |
| Chromium (Cr) | 18.0–20.0% | 16.0–18.0% |
| Nickel (Ni) | 8.0–11.0% | 10.0–14.0% |
| Molybdenum (Mo) | – | 2.0–3.0% (Added for corrosion resistance) |
| Carbon (C) | 0.08% Max | 0.03% Max |
| Tensile Strength (MPa) | 515 | 485 |
| Yield Strength (MPa) | 205 | 170 |
| Elongation (%) | 40% | 40% |
| Hardness (HBW) | 201 Max | 201 Max |
| Corrosion Resistance | Excellent | Superior (Pitting/Crevice) |
| Temperature Range | −196°C to 870°C | −196°C to 870°C |
| Weldability | Excellent | Excellent (Low carbon → less carbide precipitation) |
| Manufacturing Method | Seamless / Welded | Seamless / Welded |
| Equivalent EN Grade | 1.4301 | 1.4404 / 1.4435 |
| Available Sizes | ½″ – 24″ NPS | ½″ – 24″ NPS |
| Schedules | SCH 5 – SCH XXS | SCH 5 – SCH XXS |
| End Finishes | Plain / Bevelled / Threaded | Plain / Bevelled / Threaded |
| Key Features | General Corrosion Resistance | Marine Grade, Acid Resistance |
| HSN Code | 7304.41.00 (Seamless) | 7304.41.00 (Seamless) |
| Certifications | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 |
Corrosion Level of Medium
Weldability Requirements
TP316L is preferred due to low carbon and reduced carbide precipitation.
Hygiene & Cleanroom Requirements
Pharmaceutical, dairy, beverage → TP316L polished.
Temperature & Pressure Ratings
Both grades suitable from −196°C to 870°C.
Finish Type
We offer:
India:
Chemical plants, pharma units, food & beverage, dairy processing, oil & gas.
Middle East:
TP316L demand is high for marine & corrosive applications.
Africa:
Food, beverage, chemical & marine applications.
Europe & Americas:
High demand for TP316L sanitary & food-grade piping systems.
Inox Steel India supplies globally via JNPT, Mundra, Hazira with export-compliant packaging.
ASTM A312 / ASME SA312 TP304 and TP316L Stainless Steel Seamless Pipes from Inox Steel India are used in industries where hygiene, corrosion resistance, durability, and high-temperature performance are essential. These pipes are widely supplied in polished, annealed & pickled, and mill-finish conditions depending on application requirements.
Below are the grade-wise applications, dimensional chart, indicative pricing, HSN code, and QA protocol, designed exactly like your previous product pages.
ASTM A312 TP304 — General Purpose Stainless Steel Pipe
Service Use:
Industrial, chemical, hygienic, and structural applications.
Typical Applications:
Temp Range:
−196°C to 870°C
Size Range:
½″ – 24″ NPS (SCH 5 to SCH XXS)
Industries:
Chemical | Food | Pharma | Water Treatment | Fabrication
ASTM A312 TP316L — Premium Marine & Chemical Grade (Low Carbon)
Service Use:
Marine, corrosive, acidic, pharmaceutical, and hygienic environments.
Typical Applications:
Temp Range:
−196°C to 870°C
Size Range:
½″ – 24″ NPS (SCH 5 to SCH XXS)
Industries:
Marine | Pharma | Chemical | Oil & Gas | Food | Beverage
| NPS (Inch) | OD (mm) | Wall Thickness (SCH 40) | Approx. Weight (kg/m) |
|---|---|---|---|
| ½″ | 21.3 | 2.77 | 1.27 |
| 1″ | 33.4 | 3.38 | 2.73 |
| 2″ | 60.3 | 3.91 | 5.44 |
| 3″ | 88.9 | 5.49 | 10.88 |
| 4″ | 114.3 | 6.02 | 14.98 |
| 6″ | 168.3 | 7.11 | 28.26 |
| 8″ | 219.1 | 8.18 | 41.95 |
| 10″ | 273.1 | 9.27 | 62.42 |
| Grade / Finish | Avg. Price (INR/kg) | Approx. USD/kg | Condition |
|---|---|---|---|
| TP304 – Mill Finish | ₹ 265 – ₹ 290 | $3.50 – $3.85 | A/P |
| TP304 – Polished (180/240 Grit) | ₹ 295 – ₹ 330 | $3.85 – $4.25 | Polished |
| TP316L – Mill Finish | ₹ 350 – ₹ 390 | $4.60 – $5.15 | A/P |
| TP316L – Polished (180/240 Grit) | ₹ 380 – ₹ 430 | $5.10 – $5.70 | Polished |
| TP316L – High-Polish (320/400 Grit) | ₹ 450 – ₹ 525 | $6.00 – $6.90 | Pharma Grade |
✔ HSN 7304.41.00
(Seamless Alloy Steel Pipes for High Temperature Service)
Applies to all P-Grades: P1, P5, P9, P11, P22, P91.
Every stainless steel seamless pipe undergoes rigorous testing to meet hygiene, corrosion, and pressure requirements.
Quality Tests Conducted:
Documentation Supplied:
Inox Steel India is a trusted and established supplier of TP304 and TP316L Stainless Steel Seamless Pipes, supplying to pharmaceutical, dairy, chemical, marine, food & beverage, and oil & gas industries across India and 60+ countries.
We specialize in corrosion-resistant stainless steel solutions with precise dimensional accuracy, superior mechanical strength, and international-grade finishing.
Top Reasons to Choose Inox Steel India
Inox Steel India ensures hygiene, corrosion resistance, and long-term reliability — essential for stainless steel applications.
| Industry | Application | Preferred Grade |
|---|---|---|
| Pharmaceutical | Process piping, cleanroom systems | TP316L |
| Food & Dairy | Milk, beverage & edible fluid lines | TP304 / TP316L |
| Chemical & Acid Lines | Chemical transfer lines | TP316L |
| Marine & Offshore | Seawater & high chloride exposure | TP316L |
| Water Treatment & RO | RO pipelines & desalination | TP304 / TP316L |
| Oil & Gas | Instrumentation & process lines | TP316L |
| Beverage Manufacturing | Hygiene piping & tanks | TP316L |
| Construction & Fabrication | Structural & architectural | TP304 |
To ensure 100% protection during transport, Inox Steel India follows international packaging standards:
🌍 Major Export Locations:
UAE • Saudi Arabia • Qatar • Oman • Kuwait • Bahrain
USA • Canada • Mexico
Germany • Italy • Netherlands • UK
South Africa • Kenya • Nigeria
Malaysia • Singapore • Indonesia
Searching for a TP304 & TP316L Stainless Steel Seamless Pipe Supplier near Alankar Cinema, Mumbai?
Inox Steel India is your reliable partner for stainless steel seamless pipes in all sizes and finishes.
We provide:
Trusted by hundreds of fabricators, plant contractors, and industrial users.
Get technical guidance, MTC samples, and a full quotation within 24 hours.
📥 Downloads:
Datasheet • Price List • Polishing Options • Size Chart • MTC Sample
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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316L contains 2–3% molybdenum, offering superior resistance to chlorides, acids, and marine environments.
We supply both, but seamless is most preferred for high corrosion resistance & pressure stability.
HSN: 7304.41.00
Yes — EN 10204-compliant documents available
Yes — regular shipments to UAE, Saudi Arabia, Qatar, Oman, Germany, Italy, Netherlands, UK.
Yes — 1m, 3m, 6m, 12m & custom cut lengths.
Inox Steel India supplies premium-quality TP304 and TP316L Stainless Steel Seamless Pipes for industrial, hygienic, marine, and chemical applications.
We ensure certified quality, fast delivery, and unmatched export support.