Girgaon, Mumbai - 400004
Stainless Steel 316 Seamless Pipes are manufactured from austenitic Grade 316 stainless steel and are widely selected for applications requiring good corrosion resistance, strength and reliable performance in demanding service environments. The seamless construction provides a continuous pipe structure without a longitudinal welded joint, making these pipes suitable for various process, chemical, marine and industrial piping systems.
Kamal Steels supplies Stainless Steel 316 Seamless Pipes in different sizes, wall thicknesses, schedules, lengths and end configurations according to applicable specifications and customer requirements. Grade 316 contains molybdenum in addition to chromium and nickel, which helps provide improved resistance to chloride-containing and more aggressive environments compared with conventional Grade 304 stainless steel.
| Specification | Details |
|---|---|
| Product Name | Stainless Steel 316 Seamless Pipe |
| Grade | SS 316 / Type 316 |
| UNS | S31600 |
| EN Grade | 1.4401 |
| 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 316 Seamless Pipes are available in different nominal pipe sizes and outside diameters to meet the requirements of process piping, equipment connections and industrial fluid-handling systems. Pipe size and wall thickness are selected according to pressure, temperature, flow, mechanical and installation requirements.
Common sizes can be supplied in accordance with applicable ASME B36.19M dimensions and customer specifications. Smaller sizes are commonly used for instrumentation and utility services, while larger diameters are suitable for process and plant piping applications.
| Nominal Pipe Size | Outside Diameter | Common Applications |
|---|---|---|
| 1/2 Inch | 21.34 mm | Instrumentation and utility lines |
| 1 Inch | 33.40 mm | Process and fluid service |
| 2 Inch | 60.33 mm | Process piping and equipment connections |
| 3 Inch | 88.90 mm | Industrial process piping |
| 4 Inch | 114.30 mm | Plant and utility piping |
| 6 Inch | 168.28 mm | Process and transfer lines |
| 8 Inch | 219.08 mm | Large process piping systems |
| 10 Inch | 273.05 mm | Industrial and plant piping |
Other nominal sizes, outside diameters and wall thicknesses can be supplied based on the required specification, schedule and project requirements.
The weight of Stainless Steel 316 Seamless Pipe depends mainly on its outside diameter, wall thickness, nominal size and pipe length. Heavier schedules have greater wall thickness and therefore higher weight per metre compared with lighter schedules of the same nominal size.
The following values provide a general reference for commonly used Stainless Steel 316 pipe sizes. Actual weight may vary according to dimensional tolerances, material density, manufacturing requirements and applicable standards.
| Nominal Size | Outside Diameter | Typical Schedule | Approx. Weight |
|---|---|---|---|
| 1/2 Inch | 21.34 mm | SCH 40S | Approx. 1.00 kg/m |
| 1 Inch | 33.40 mm | SCH 40S | Approx. 2.10 kg/m |
| 2 Inch | 60.33 mm | SCH 40S | Approx. 4.70 kg/m |
| 3 Inch | 88.90 mm | SCH 40S | Approx. 7.50 kg/m |
| 4 Inch | 114.30 mm | SCH 40S | Approx. 9.70 kg/m |
| 6 Inch | 168.28 mm | SCH 40S | Approx. 16.70 kg/m |
For accurate procurement, shipping and project calculations, the actual outside diameter, wall thickness, length and material density should be considered rather than relying only on nominal size.
Pipe schedules identify the wall thickness of a pipe for a particular nominal size. For Stainless Steel 316 Seamless Pipes, commonly specified schedules include SCH 5S, SCH 10S, SCH 40S, SCH 80S and SCH 160. The appropriate schedule depends on the required pressure rating, temperature, service conditions and design requirements.
| Schedule | General Description | Typical Use |
|---|---|---|
| SCH 5S | Light wall | Low-pressure and selected process services |
| SCH 10S | Light wall | General process and utility piping |
| SCH 40S | Standard wall | General industrial piping |
| SCH 80S | Heavy wall | Higher-pressure service applications |
| SCH 160 | Extra heavy wall | Selected high-pressure applications |
Schedule availability varies with nominal pipe size. Final wall thickness, pressure rating and allowable service conditions should be confirmed against the applicable piping code and project specification.
ASTM A312 TP316 Seamless Pipe is manufactured from Type 316 austenitic stainless steel and is covered by ASTM A312 requirements for seamless, welded and heavily cold-worked austenitic stainless steel pipe intended for corrosive and high-temperature service. Grade 316 is identified by UNS S31600 and is commonly selected for applications requiring improved resistance to chloride-containing environments.
Stainless Steel 316 Seamless Pipe can be supplied in different nominal sizes, schedules, lengths and end configurations according to the applicable specification. ASME SA312 may also be specified where the applicable ASME Code or project documentation requires the corresponding material designation.
| ASTM Specification | ASTM A312 |
|---|---|
| ASME Specification | ASME SA312 |
| Grade | TP316 |
| UNS | S31600 |
| Material | Austenitic Stainless Steel |
| Product Form | Seamless Pipe |
| Service | Corrosive and high-temperature service |
Stainless Steel 316 is an austenitic chromium-nickel-molybdenum stainless steel. The addition of molybdenum helps improve resistance to pitting and crevice corrosion in chloride-containing environments. The exact chemical and mechanical requirements should be verified against the applicable material specification and product form.
| Element | Typical / Specification Limit (%) |
|---|---|
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Carbon (C) | 0.08 max. |
| Manganese (Mn) | 2.00 max. |
| Silicon (Si) | 1.00 max. |
| Phosphorus (P) | 0.045 max. |
| Sulfur (S) | 0.030 max. |
| Property | Typical Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa min. |
| Yield Strength | 205 MPa min. |
| Elongation | 35% min. |
Actual chemical composition and mechanical properties may vary according to the applicable specification, product size, heat treatment and manufacturing requirements. Mill Test Certificates should be referred to for the certified values of a specific supply.
Both Stainless Steel 316 Seamless Pipes and welded pipes are used in industrial piping systems, but their manufacturing methods are different. Seamless pipe is produced from a solid billet without forming a longitudinal weld seam, whereas welded pipe is manufactured from stainless steel strip or plate and joined along the seam.
| Feature | SS 316 Seamless Pipe | SS 316 Welded Pipe |
|---|---|---|
| Manufacturing | Produced without a longitudinal weld | Formed and joined using a welded seam |
| Construction | Continuous pipe structure | Contains a longitudinal welded joint |
| Typical Selection | Suitable for specified demanding service conditions | Suitable for many general and process piping applications |
| Size Availability | Wide range depending on manufacturing capability | Can be advantageous for larger diameters |
| Cost Consideration | Generally higher manufacturing cost | Often more economical for suitable applications |
The selection between seamless and welded construction should be based on pressure, temperature, corrosion conditions, pipe dimensions, applicable standards, fabrication requirements and project specifications rather than on construction type alone.
Stainless Steel 316 Seamless Pipes are used across industries where corrosion resistance, strength, durability and reliable performance are required. The molybdenum-bearing composition of Grade 316 makes it a suitable material for many applications involving chloride exposure and demanding process conditions.
Industry: Chemical Processing
Application: Corrosive fluid handling, process lines and chemical transfer systems.
Industry: Petrochemical
Application: Process piping, plant utilities and equipment connections.
Industry: Marine & Offshore
Application: Seawater-related systems, marine equipment and offshore process piping.
Industry: Food & Beverage
Application: Hygienic process piping, fluid transfer and processing equipment.
Industry: Pharmaceutical
Application: Clean process lines, utility systems and hygienic fluid handling.
Industry: Power Generation
Application: Utility piping, process systems and equipment connections.
ASTM A312 TP316 Seamless Pipe is a stainless steel pipe manufactured without welded joints and produced according to ASTM A312 specifications. It contains molybdenum, which provides enhanced corrosion resistance, strength and durability in aggressive industrial environments.
ASTM A312 TP316L Pipe contains lower carbon content than TP316, which improves weldability and reduces the risk of carbide precipitation during welding. TP316L is commonly used in welded structures and corrosive applications.
Stainless Steel 316 Seamless Pipes offer excellent corrosion resistance, superior strength, resistance to chlorides and seawater, leak-free performance and suitability for high-pressure and high-temperature applications.
ASTM A312 TP316 Seamless Pipes are widely used in chemical processing plants, oil and gas refineries, marine engineering, pharmaceutical industries, food processing plants, heat exchangers, condensers and water treatment facilities.
Yes, TP316 Stainless Steel Pipe is highly resistant to chloride attack and seawater corrosion, making it an excellent choice for marine, offshore and coastal applications.
SS 316 Seamless Pipes are available in sizes ranging from 1/8" NB to 24" NB with schedules including SCH 5, SCH 10, SCH 40, SCH 80, SCH 160 and SCH XXS according to project requirements.
Seamless pipes are manufactured without welded joints, providing higher strength and pressure resistance. Welded pipes are produced by rolling and welding stainless steel strips and are generally used for lower-pressure applications.
Kamal Steels offers premium-quality ASTM A312 TP316 Seamless Pipes with ready stock availability, competitive pricing, third-party inspection, Material Test Certificates (MTC), customized solutions and worldwide export support.