Stainless Steel 316L Seamless Pipes Manufacturer in India

What are Stainless Steel 316L Seamless Pipe?

Stainless Steel 316L Seamless Pipes are low-carbon austenitic stainless steel pipes known for excellent corrosion resistance, good mechanical properties and reliable performance in demanding industrial environments. The addition of molybdenum improves resistance to pitting and crevice corrosion, while the low carbon content makes Grade 316L well suited for welded and fabricated piping systems.

Manufactured without a longitudinal weld seam, Stainless Steel 316L Seamless Pipes provide uniform construction for pressure and process piping applications. Their chromium, nickel and molybdenum content provides good resistance to chlorides, chemicals, moisture and other corrosive media, making them suitable for demanding service conditions.

Stainless Steel 316L Seamless Pipes are commonly used in chemical processing plants, pharmaceutical facilities, marine equipment, food processing systems, petrochemical plants, water treatment systems and other applications where corrosion resistance and dependable piping performance are required. They are available in different outside diameters, wall thicknesses, schedules and lengths according to applicable standards and project requirements.

Kamal Steels is a Stainless Steel 316L Seamless Pipes Manufacturer & Stockist in India, supplying SS 316L Seamless Pipes in standard and customized sizes, schedules, wall thicknesses and lengths. Products can be supplied with applicable testing, inspection, material certificates and documentation according to customer and project specifications.

Stainless Steel 316L Seamless Pipe Specifications

Table of Contents

Stainless Steel 316L Seamless Pipe Specifications

Specification Details
Product Name Stainless Steel 316L Seamless Pipe
Grade SS 316L / Type 316L
UNS S31603
EN Grade 1.4404
Material Type Austenitic Stainless Steel
Manufacturing Process Seamless
Product Standard ASTM A312
ASME Specification ASME SA312
Size Range 1/8" to 24" and above as required
Schedule 5S, 10S, 40S, 80S, 160 and other schedules
Wall Thickness As per applicable schedule or specified requirement
Length Random, Double Random or Fixed Length
End Type Plain End, Bevelled End or Threaded End as required
Surface Finish Pickled & Passivated, Annealed, Bright Annealed or Polished
Heat Treatment Solution Annealed and Rapidly Cooled as specified by the applicable standard
Testing Hydrostatic, PMI, Ultrasonic, Flattening, Flaring and other applicable tests
Inspection Third Party Inspection available as required
Certification EN 10204 3.1 / Material Test Certificate (MTC)
Packaging Bundles, Wooden Cases, Wooden Boxes, Plastic End Caps and Export Packing

Stainless Steel 316L Seamless Pipe Size Chart

Stainless Steel 316L Seamless Pipes are available in a broad range of nominal pipe sizes and outside diameters for different industrial piping requirements. The required size is generally selected according to flow requirements, pressure conditions, piping design and applicable standards.

NPS Nominal Size Typical Outside Diameter
1/8" DN 6 10.3 mm
1/4" DN 8 13.7 mm
1/2" DN 15 21.3 mm
1" DN 25 33.4 mm
2" DN 50 60.3 mm
3" DN 80 88.9 mm
4" DN 100 114.3 mm
6" DN 150 168.3 mm
8" DN 200 219.1 mm
10" DN 250 273.1 mm
12" DN 300 323.9 mm

Other sizes and dimensions can be supplied according to the applicable specification, project requirements and availability.

Stainless Steel 316L Seamless Pipe Weight Chart

The weight of Stainless Steel 316L Seamless Pipe depends mainly on its outside diameter, wall thickness and length. Heavier schedules have greater wall thickness and therefore higher weight per metre. Actual supplied weight may vary according to dimensional tolerances and the applicable manufacturing standard.

Pipe Size Schedule Approx. Weight
1/2" SCH 40S Approx. 1.27 kg/m
1" SCH 40S Approx. 2.09 kg/m
2" SCH 40S Approx. 5.03 kg/m
3" SCH 40S Approx. 7.68 kg/m
4" SCH 40S Approx. 10.79 kg/m
6" SCH 40S Approx. 18.97 kg/m

For exact weight calculations, the pipe outside diameter, wall thickness, length and material density should be considered. The final shipping weight should be confirmed from the actual product dimensions and applicable tolerances.

Stainless Steel 316L Seamless Pipe Schedule Chart

Pipe schedules indicate the wall thickness of a pipe for a particular nominal pipe size. Stainless Steel 316L Seamless Pipes can be supplied in different schedules depending on the required pressure rating, dimensions and application.

Schedule Common Description Typical Application
SCH 5S Light Wall Low-pressure and utility services
SCH 10S Light Wall Process and general industrial piping
SCH 40S Standard Wall General industrial and process applications
SCH 80S Heavy Wall Higher-pressure service applications
SCH 160 Extra Heavy Wall Specialized high-pressure applications

ASTM A312 TP316L Seamless Pipe

ASTM A312 TP316L Seamless Pipe is manufactured from Type 316L stainless steel according to the applicable requirements of ASTM A312. TP316L is identified as UNS S31603 and is commonly selected for corrosive service, process piping and applications where the combination of molybdenum alloying and low carbon content is beneficial.

The corresponding ASME designation is commonly identified as SA312 where the applicable ASME Code requirements apply. Pipe dimensions, schedules, heat treatment, mechanical properties, testing and acceptance requirements should be confirmed against the applicable specification and purchase requirements.

Stainless Steel 316L Seamless Pipe vs Welded Pipe

Both seamless and welded stainless steel pipes are used in industrial piping systems, but their manufacturing methods are different. A seamless pipe is produced without a longitudinal weld seam, while a welded pipe is manufactured by forming stainless steel material and joining the longitudinal edges using an appropriate welding process.

Feature SS 316L Seamless Pipe SS 316L Welded Pipe
Manufacturing Produced without a longitudinal weld Manufactured using a welded longitudinal joint
Pressure Service Suitable for specified pressure applications Suitable where permitted by the applicable specification
Size Range Commonly used across small and medium pipe sizes Can be advantageous for larger diameter requirements
Selection Selected where seamless construction is required Selected based on specification, dimensions and application

The choice between Stainless Steel 316L Seamless Pipe and welded pipe should be based on the applicable standard, pressure and temperature conditions, pipe dimensions, fabrication requirements and project specifications.

Stainless Steel 316L Seamless Pipe Chemical Composition

Stainless Steel 316L Seamless Pipes contain chromium, nickel and molybdenum as the principal alloying elements. The low carbon content of Grade 316L helps reduce the risk of carbide precipitation after welding, while molybdenum improves resistance to pitting and crevice corrosion in chloride-containing environments.

Element Composition (%)
Carbon 0.030 max.
Chromium 16.0 - 18.0
Nickel 10.0 - 14.0
Molybdenum 2.0 - 3.0
Manganese 2.00 max.
Silicon 1.00 max.
Phosphorus 0.045 max.
Sulfur 0.030 max.

The chemical composition of SS 316L Seamless Pipes should be verified against the applicable ASTM or ASME specification and the material test certificate supplied with the product.

Stainless Steel 316L Seamless Pipe Mechanical Properties

Stainless Steel 316L Seamless Pipes provide a combination of tensile strength, yield strength and ductility suitable for industrial pressure and process piping applications. The grade also offers good toughness and dependable performance across a wide range of corrosive service conditions.

Mechanical Property Minimum Requirement
Tensile Strength 485 MPa
Yield Strength 170 MPa
Elongation 40%

Mechanical properties may vary according to the applicable material specification, pipe dimensions, heat-treatment condition and testing requirements. Final values should be confirmed against the relevant standard and material test certificate.

Stainless Steel 316L Seamless Pipe Applications & Industries

Stainless Steel 316L Seamless Pipes are used in applications requiring excellent corrosion resistance, particularly where piping may be exposed to chlorides, chemicals, moisture, or aggressive process media. The low-carbon composition and molybdenum content make the grade suitable for demanding process and fabricated piping systems.

Application / Industry Typical Use
Chemical Processing Corrosive chemical process piping and fluid handling.
Pharmaceutical Industry Process piping and hygienic fluid-handling systems.
Marine Industry Piping and equipment exposed to marine environments.
Food Processing Corrosion-resistant and sanitary process piping.
Petrochemical Industry Process piping and corrosion-resistant equipment.
Water Treatment Water and chemical treatment piping systems.
Heat Exchangers Corrosion-resistant heat-transfer systems.

Industries Using Stainless Steel 316L Seamless Pipe

Stainless Steel 316L Seamless Pipes are widely used across industries that require reliable corrosion-resistant piping for demanding process and fluid-handling conditions. Their combination of low carbon content and molybdenum alloying makes them suitable for applications where corrosion resistance and fabrication performance are important.

Industry Typical Applications
Chemical Industry Chemical processing and corrosive fluid piping.
Oil & Gas Industry Process, utility, and fluid-handling systems.
Pharmaceutical Industry Process piping and hygienic manufacturing systems.
Marine Industry Marine piping and chloride-exposed equipment.
Food Processing Industry Sanitary processing and fluid-handling applications.
Petrochemical Industry Corrosion-resistant process piping and equipment.
Water Treatment Industry Water treatment and chemical handling systems.

Kamal Steels supplies Stainless Steel 316L Seamless Pipes in different sizes, schedules, wall thicknesses and lengths according to customer and project requirements.

Frequently Asked Questions

ASTM A312 TP316L Seamless Pipe is a low-carbon austenitic stainless steel pipe containing chromium, nickel and molybdenum. It offers excellent corrosion resistance, superior weldability and is widely used in chemical, marine, pharmaceutical and food processing industries.

The primary difference is carbon content. TP316L contains a maximum of 0.03% carbon compared to 0.08% in TP316. This lower carbon content improves weldability and reduces the risk of intergranular corrosion after welding.

SS 316L Seamless Pipes are commonly available from 1/8" NB to 24" NB in various schedules including SCH 5S, SCH 10S, SCH 40S and SCH 80S according to ASTM A312 and ASME standards.

The molybdenum content in 316L Stainless Steel Pipe provides excellent resistance to pitting and crevice corrosion caused by chlorides and seawater, making it ideal for marine and offshore environments.

ASTM A312 TP316L Pipes are available in SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 120 and SCH 160 depending on project requirements and pressure ratings.

Yes. TP316L Pipe is specifically preferred for welding applications because its low carbon content minimizes carbide precipitation and improves resistance to weld-related corrosion.

These pipes are widely used in chemical processing, oil & gas, pharmaceuticals, food processing, marine engineering, offshore platforms, power generation and water treatment industries.

Yes. SS 316L Seamless Pipes are generally supplied with EN 10204 3.1 Mill Test Certificates (MTC) and can also be provided with third-party inspection reports upon request.

The price depends on pipe size, schedule, quantity, testing requirements and current stainless steel raw material costs. Contact Kamal Steels for the latest TP316L Pipe price and stock availability.

Kamal Steels is a leading manufacturer, stockist, supplier and exporter of ASTM A312 TP316L Seamless Pipe in India, offering ready stock, competitive pricing and worldwide delivery.

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