SS 316L Seamless Pipe Manufacturer in India
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Neeka Tubes manufactures and supplies SS 316L seamless pipes in India, providing clients across chemical processing, marine, pharmaceutical, and food-grade industries. These are Stainless Steel pipes made from low-carbon austenitic material with carbon capped at 0.03% maximum. That low carbon content prevents carbide precipitation at weld joints. In practical terms, the pipe does not suffer intergranular corrosion after fabrication, which is a real failure mode with higher-carbon grades.
ASTM A312 TP316L pipe is produced for service in pressurised and chemically aggressive conditions. The material handles temperatures up to 870°C and holds its mechanical properties under sustained load. The 2–3% molybdenum content in the alloy significantly improves resistance to pitting and crevice corrosion in chloride-containing environments. This is not a minor detail in marine, coastal, and chemical environments.
We supply these Stainless Steel pipes in different sizes, wall schedules from Schedule 10 to Schedule 80, and surface finishes according to the application needs. These pipes are also available in custom lengths. 316L seamless pipe price per kg also depends on diameter, wall schedule, order quantity and delivery location.
All shipments include Mill Test Certificates (EN 10204 3.1) with complete chemical and mechanical data. Third-party inspection through TUV, SGS, or BV is available where required. Global shipping is managed with export-standard packaging to protect the material during transit.
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What Is ASTM A312 TP316L Seamless Pipe?
ASTM A312 TP316L is a low-carbon austenitic Stainless Steel pipe manufactured to ASTM A312 specifications. Carbon is kept below 0.03%. This is what qualifies it as an L-grade material, and it is the reason this pipe is specified for welded assemblies in corrosive service. Higher-carbon grades sensitize during welding. 316L does not. The corrosion resistance stays intact at and around the weld joint.
The alloy contains 2 to 3% molybdenum. This addition specifically targets pitting and crevice corrosion in chloride-containing environments. Local plants and marine structures specify this grade because standard austenitic stainless steel is not adequate under those conditions. The grade is also identified as UNS S31603.
Seamless construction means no weld seam in the pipe body. It has a uniform wall thickness, tight tolerances and a structurally sound tube that is ideal for high-pressure lines. Variations in wall thickness impact pressure ratings and long term reliability in pressurized service.
Neeka Tubes is a reputed SS 316L pipe manufacturer in India that offers this grade for projects where pipe needs to survive fabrication and then perform in aggressive service conditions.
Benefits of Stainless Steel 316L Seamless Pipe
- Great Strength and Durability: SS 316L seamless pipes are built to last, handling heavy loads and daily wear without bending or breaking. They provide long-term reliability in demanding applications.
- Superior Weldability: These pipes weld easily without cracking or weakening. Smooth welds create secure connections, making installation and fabrication straightforward.
- Smooth Inner Surface: The seamless design ensures a clean, smooth interior. This reduces fluid resistance, prevents debris buildup, and supports consistent flow efficiency.
- Available in Different Types: SS 316L seamless pipes come in a range of diameters, wall thicknesses, and finishes. This flexibility allows you to choose the right type for your system needs.
- High Temperature Resistance: They are the type of pipes that keep their hardness and form the same even after being heated to very high temperatures. Such pipes can be trusted to be part of elevated, temperature operations and industrial applications.
SS 316L vs SS 304 vs SS 304L: Grade Comparison
SS 316L, SS 304, and SS 304L are all austenitic Stainless Steel grades. They are grouped together often in material comparisons because the names are close and the base structure is similar. But differences in chemistry directly affect where each one performs and where it does not.
Carbon content splits them into two groups. SS 304 has carbon up to 0.08%. SS 316L and SS 304L both cap carbon below 0.03%, which is why they carry the L designation. Lower carbon reduces the risk of sensitization during welding, making both 316L and 304L better suited for welded fabrications than standard 304.
The more consequential difference is molybdenum. SS 304 and SS 304L contain none. SS 316L has 2 to 3%. That addition specifically targets pitting and crevice corrosion in chloride environments. Marine installations, coastal structures or chemical lines with chloride exposure are more susceptible with 304 and 304L. 316L holds up better.
So between 304L and 316L, the carbon level is the same but performance in aggressive environments is not. For clean water systems, general food contact, or light indoor applications, 304L may be sufficient. Where chloride contact is a regular factor, 316L is the more appropriate specification.
SS 304 is commonly used in kitchen equipment, storage tanks and for general industrial applications where the exposure to corrosion is moderate. SS 304L is the preferred material for welded piping, vessels and fabrication projects where low sensitization is important. SS 316L is widely used in marine, chemical, pharmaceutical and coastal environments where resistance to chlorides and welded corrosion performance are key requirements.
Most Common Types of Stainless Steel 316L Seamless Pipe
SS 316l Seamless Pipe
316l SS Round Pipe
SS 316l Schedule 5S Pipe
SS 316l Polished Pipe
SS 316l Schedule 40 Seamless Pipe
316l Stainless Steel Thin Wall Pipe
Stainless Steel 316l Custom Pipe
Stainless Steel 316l Cold Drawn Seamless Pipe
Stainless Steel 316L Seamless Pipe Specifications
This section lists key specifications of SS 316L seamless pipes, including standards, size range, form, and finish options for industrial use.
| Specifications | ASTM A312 / ASTM SA312 |
| Dimensions | ASTM, ASME and API |
| Range | 6NB to 1200NB |
| Outer Diameter | 1/8″ NPS to 12″ NPS |
| Thickness | 0.6 mm to 12.7 mm |
| Schedules | SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS |
| Length | Single Random, Double Random & Cut Length |
| Types | Round, Square, Rectangle, Hydraulic, Honed Tubes |
| End | Plain End, Beveled End |
316L Stainless Steel Seamless Pipe Chemical Composition
The detailed chemical makeup of SS 316L pipes, showing exact percentages of chromium, nickel, molybdenum, and other elements.
| Grade | Ni | N | Cr | C | Si | Mn | P | S | Mo |
| SS 316L | 10 – 14 | 0.10 max | 16 – 18 | 0.08 max | 0.75 max | 2 max | 0.045 max | 0.030 max | 2.00 – 3.00 |
Mechanical Properties of SS 316L Seamless Pipe
This mechanical strength of 316L pipes includes tensile strength, yield strength, elongation and hardness values.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness |
| SS 316L | 485 | 170 | 40 | Rockwell B (HR B) max 95, Brinell (HB) max 217 |
Equivalent Grades For 316L Stainless Steel Seamless Pipe
The table shows global grade equivalents for SS 316L, allowing users to match international standards like as UNS, EN, and JIS codes.
| STANDARD | UNS | WERKSTOFF NR. | JIS | AFNOR | BS | GOST | EN |
| SS 316L | S31603 | 1.4404 / 1.4435 | SUS 316L | Z3CND17‐11‐02 / Z3CND18‐14‐03 | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
Contact Neeka tubes today for a best offer & competitive quotation Of Stainless Steel 316L Seamless Pipes
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Stainless Steel 316L Seamless Pipe Dimensions In MM
The standard pipe dimensions in millimeters, covering outer diameter, wall thickness and approximate weight per meter.
| Outside Diameter | Qty/B | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.2 | 1.5 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | mm | Lgh | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs | Kgs |
| 3/8″ | 9.5 | 100 | 0.81 | 0.94 | 1.06 | 1.18 | 1.29 | 1.51 | 1.82 | |||||
| 1/2″ | 12.7 | 100 | 1.10 | 1.28 | 1.45 | 1.61 | 1.78 | 2.10 | 2.55 | |||||
| 5/8″ | 15.9 | 100 | 1.39 | 1.62 | 1.84 | 2.05 | 2.26 | 2.68 | 3.28 | |||||
| 3/4″ | 19.1 | 100 | 1.69 | 1.96 | 2.22 | 2.49 | 2.75 | 3.26 | 4.01 | |||||
| 7/8″ | 22.2 | 100 | 1.97 | 2.29 | 2.60 | 2.91 | 3.22 | 3.83 | 4.72 | |||||
| 1″ | 25.4 | 100 | 2.26 | 2.63 | 2.99 | 3.35 | 3.71 | 4.41 | 5.45 | |||||
| 11/8″ | 28.6 | 50 | 2.55 | 2.97 | 3.38 | 3.79 | 4.19 | 5.00 | 6.18 | |||||
| 11/4″ | 31.8 | 50 | 2.84 | 3.31 | 3.77 | 4.23 | 4.68 | 5.58 | 6.91 | |||||
| 11/2″ | 38.1 | 50 | 3.42 | 3.98 | 4.53 | 5.09 | 5.64 | 6.73 | 8.34 | |||||
| 15/8″ | 41.3 | 50 | 3.71 | 4.32 | 4.92 | 5.52 | 6.12 | 7.31 | 9.07 | |||||
| 13/4″ | 44.5 | 50 | 4.00 | 4.66 | 5.31 | 5.96 | 6.61 | 7.90 | 9.80 | |||||
| 2″ | 50.8 | 10 | 6.08 | 6.82 | 7.57 | 9.04 | 11.24 | 14.83 | 21.79 | |||||
| 21/2″ | 63.5 | 10 | 7.62 | 8.56 | 9.50 | 11.36 | 14.13 | 18.69 | 27.58 | |||||
| 3″ | 76.2 | 10 | 9.17 | 10.30 | 11.43 | 13.68 | 17.03 | 22.55 | 33.37 | 43.88 | ||||
| 31/2″ | 88.9 | 10 | 10.71 | 12.03 | 13.36 | 15.99 | 19.92 | 26.41 | 39.16 | 51.60 | ||||
| 4″ | 101.6 | 10 | 18.31 | 22.82 | 30.27 | 44.95 | 59.32 | 73.39 | 87.16 | |||||
| 5″ | 127 | 10 | ||||||||||||
| 6″ | 152.4 | 10 | ||||||||||||
SS 316 Seamless Pipe Thickness Chart
This chart lists available thickness options for SS 316L seamless pipes, helping buyers choose the right wall thickness for their application.
| Outside Diamter, OD (in mm) | Wall Thickness, WT (in mm) |
|---|---|
| 6mm – 630mm | 0.5mm-30mm |
| 12.7mm* 12.7mm to 300mm* 300mm | 0.5mm-30mm |
| 10*20mm to 100*200mm | 0.5mm-30mm |
| 6mm to 630mm | 0.5mm-30mm |
| 12.7mm to 250mm | 0.5mm-30mm |
| 16mm to 85mm | 0.5mm-3.0mm |
| 13mm to 85mm | 0.5mm-2.0mm |
| 20mm to 200mm | 0.5mm-2.0mm |
| 22mm*0.7mm to 108mm*2.0mm | 0.5mm-2.0mm |
| 12.5mm to 203.2mm | 1.0mm – 5mm |
| 0.28mm to 10mm | 0.08mm – 1.2mm |
| 6mm to 430mm | 0.8mm – 30mm |
Manufacturing Process for SS 316L Seamless Pipe
The manufacturing of SS 316L seamless pipes involves precise hot working methods and quality checks to deliver pipes that perform well under pressure and in corrosive environments.
- Billet Selection – First step is to select high-quality SS 316L billets that are sourced to ensure purity and consistent mechanical properties.
- Heating & Piercing – Then the billets are uniformly heated and pierced through a mandrel to create a hollow tube structure.
- Hot Rolling/Extrusion: The pierced shell is hot rolled or extruded to achieve the appropriate outer diameter and wall thickness.
- Cold Drawing (if needed) – Pipes are redrawn at room temperature to improve surface finish and maintain tighter tolerances.
- Solution Annealing – Heat treatment is applied to restore corrosion resistance and relieve internal stress from forming.
- Straightening & Finishing – Pipes are straightened, trimmed, and cleaned for smooth appearance and accurate length.
- Final Inspection & Testing – Each pipe undergoes hydro testing, NDT, and dimensional checks to meet strict quality standards.
The SS 316L seamless pipe manufacturing process ensures durable, precise, and corrosion-resistant pipes for demanding industrial use.
Heat & Corrosion Resistance Ratings
Stainless steel 316L seamless pipe offers excellent resistance to heat and corrosion, making it a strong choice for harsh environments. At temperatures as high as 870°C, it is resistant to oxidation and scaling, which makes it suitable for high-temperature service and thermal systems. Its low carbon content (L grade), helps prevent intergranular corrosion after welding, which is critical in systems that require clean welds and long-term durability. This alloy performs well in chloride-rich situations, and holds up against acids in chemical processing setups. Its proven reliability in chemical, marine and pharmaceutical industries reflects its broad corrosion resistance and stable composition. It also stands up to indoor and outdoor elements like industrial gases and moisture, keeping its structure and strength over time. Whether under high pressure or temperature shifts, SS 316L pipe performance remains consistent, making it a trusted material for heat exchangers, reactors, and pressurized systems. This combination of 316L pipe heat resistant protection provides long-term use under even the harshest conditions.
Packaging & Delivery – Domestic & Export
Each stainless steel 316L seamless pipe is carefully packed to avoid damage, corrosion, and moisture, during storage and transportation. We employ ISPM-15 approved wood crates, HDPE-wrapped bundles, and plastic end caps to protect the pipes from scratches and contamination. All packing meets seaworthy standards to keep the pipes undamaged during long-distance transportation. For domestic delivery, we assure quick dispatch, proper layering, and clear barcode or tag labeling to facilitate handling and tracking. Every order comes with complete paperwork, such as Mill Test Certificates (EN 10204 3.1 or 3.2), heat number markings and detailed specification tags. We partner with trusted logistics providers to make sure deliveries arrive safely and on time whether across India or to global destinations.
Why Choose Neeka Tubes for Stainless Steel 316L Seamless Pipes
Neeka Tubes is a trusted SS 316L seamless pipe supplier in India. We are known for our certified quality, timely delivery and export ready solutions to your industry needs.
- Trusted SS 316L seamless pipe manufacturer in India with global export capabilities
- Supplies ASTM A312 TP316L pipe with Mill Test Certificates (EN 10204 3.1)
- We maintain ready stock in a wide range of sizes, schedules, and surface finishes
- Provides unique lengths and cut-to-size alternatives based on your project requirements.
- Fast dispatch and reliable delivery across India and international locations
- Follows tight dimensional tolerances with strict in-house quality checks
- Our team packs every order securely using HDPE wrapping, plastic end caps, and ISPM-15 wooden crates
- Handles both bulk and small quantity orders with equal care
- We are also known for responsive customer service and prompt technical support
- All pipes are tested through hydrostatic pressure checks, non-destructive examination, PMI verification, and mechanical testing before dispatch
- Each batch includes a Mill Test Certificate (EN 10204 3.1), and third-party inspection through TUV, SGS, or BV is available on request
Applications of SS 316L Seamless Pipes
Stainless steel 316L seamless pipes are utilized in industries requiring exceptional corrosion resistance, strength and hygiene. Their performance in aggressive and sanitary environments makes them a top choice across sectors.
- Chemical Processing – These pipes are designed to handle severe acids, alkalis, and corrosive fluids without degrading or contaminating the system.
- Pharmaceutical & Food Industries – SS 316L’s non-reactivity and ease of sterilization, making it perfect for cleanrooms, processing lines, and hygienic situations where contamination is a concern.
- Marine Applications – Known for its resistance to saltwater and moisture, SS 316L performs well in marine structures, piping, and underwater equipment exposed to harsh coastal and offshore conditions.
- Oil & Gas – These pipes are capable of withstanding high temperatures and pressures, which are used in drilling, exploring, and refining processes. They’re a safe and durable choice for pipelines and processing units.
- Heat Exchangers & Boilers – SS 316L resists scaling and oxidation at elevated temperatures, making it suitable for systems where heat transfer efficiency and metal stability are critical.
- Power Plants and Refineries – The alloy is perfect for power generation and refining units that operate continuously under heavy loads because it is resistant to temperature cycling, vibration and stress.
- These uses for stainless steel 316L pipes show their significance in terms of safety, hygiene, and long-term durability in difficult conditions.
FAQ
How is 316L different from 316 seamless pipe?
316L has less carbon than 316, making it more corrosion resistant after welding. Both have equal mechanical strength and seamless structure.
What are the typical sizes and schedules of SS 316L seamless pipe?
Common sizes range from 1/8″ to 24″ NB, with schedules from SCH 5S to SCH 160 and even XXS.
What is the maximum operating pressure of SS 316L seamless pipe?
Depends on size and schedule. For example, 1″ SCH 80 pipe can handle up to 5,100 psi at room temperature. Always refer to ASME B31.3 or manufacturer specs.
How does SS 316L seamless pipe compare with 304L?
316L has added molybdenum, offering better resistance to pitting and corrosion, especially in chloride or marine environments. It’s more durable but slightly more expensive than 304L.
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