Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
316/316L stainless steel seamless pipe is an austenitic chromium-nickel-molybdenum alloy pipe known for its superior corrosion resistance, especially against chlorides and acidic environments.
316L is the low-carbon version of 316, offering better weldability and resistance to intergranular corrosion after welding. Both grades are widely used in marine, chemical, and pharmaceutical applications.
Key Advantage: Excellent resistance to pitting and crevice corrosion in chloride environments.
Specifications
Parameter
Available Options
Material Grade
316, 316L (1.4401, 1.4404)
Standard
ASTM A312 / ASME SA312 / EN 10216-5 / JIS G3459
Outer Diameter (OD)
6.0mm - 610mm (1/8" - 24")
Wall Thickness (WT)
0.5mm - 40mm (Schedule 5S - XXS)
Length
6m / 12m / custom cut-to-length
Surface Finish
Annealed & Pickled / Bright Annealed / Polished
End Finish
Plain ends / Beveled ends / Threaded
Packing
Wooden crates / Bundles / Plastic caps on both ends
Schedule Chart (Standard Sizes)
NPS (inch)
OD (mm)
Schedule 10S
Schedule 40S
Schedule 80S
1/2"
21.3
2.11mm
2.77mm
3.73mm
1"
33.4
2.77mm
3.38mm
4.55mm
2"
60.3
2.77mm
3.91mm
5.54mm
4"
114.3
3.05mm
6.02mm
8.56mm
6"
168.3
3.40mm
7.11mm
10.97mm
8"
219.1
3.76mm
8.18mm
12.70mm
Other sizes and custom schedules available upon request.
Mechanical Properties (Typical)
Property
316
316L
Tensile Strength
≥ 515 MPa
≥ 485 MPa
Yield Strength (0.2%)
≥ 205 MPa
≥ 170 MPa
Elongation
≥ 35%
≥ 35%
Hardness (Brinell)
≤ 217 HB
≤ 217 HB
Hardness (Rockwell B)
≤ 95 HRB
≤ 95 HRB
Chemical Composition (%)
Element
316
316L
Carbon (C)
≤ 0.08
≤ 0.030
Manganese (Mn)
≤ 2.00
≤ 2.00
Silicon (Si)
≤ 0.75
≤ 0.75
Phosphorus (P)
≤ 0.045
≤ 0.045
Sulfur (S)
≤ 0.030
≤ 0.030
Chromium (Cr)
16.0 - 18.0
16.0 - 18.0
Nickel (Ni)
10.0 - 14.0
10.0 - 14.0
Molybdenum (Mo)
2.00 - 3.00
2.00 - 3.00
Key Features & Benefits
Molybdenum addition (2-3%)
Superior resistance to pitting and crevice corrosion
Low carbon (316L)
Excellent weldability, no post-weld annealing required
Seamless construction
No weld seam, uniform structure, higher pressure rating
Austenitic structure
Good toughness even at cryogenic temperatures
Wide size range
6mm to 610mm OD, suitable for various applications
Applications
Industry
Application
Why 316/316L
Marine / Offshore
Seawater piping, shipbuilding, and oil rigs
Excellent chloride corrosion resistance
Chemical Processing
Chemical reactors, heat exchangers, storage tanks
Resists acids (acetic, citric, formic)
Oil & Gas
Downhole tubing, flow lines, refineries
High pressure & corrosion resistance
Pharmaceutical
Clean steam lines, process piping
Smooth interior, easy to clean
Food & Beverage
Processing equipment, beer brewing lines
Non-reactive, sanitary surface
Pulp & Paper
Bleaching systems, digesters
Resists sulfite and sulfate liquors
Water Treatment
Desalination plants, RO systems
Seawater and brine resistance
Power Generation
Condenser tubes, cooling water systems
Resists cooling water corrosion
Quality Assurance
Certification
Description
Mill Test Certificate
EN 10204 3.1 - traceable to heat number
Third-party Inspection
SGS, BV, or as requested
Hydrostatic Test
100% tested per ASTM A312
Eddy Current Test
Optional per ASTM A213
PMI Test
Positive Material Identification - available
Intergranular Corrosion Test
Per ASTM A262 - available
316 vs 316L - When to Choose Which?
Criteria
Choose 316
Choose 316L
General corrosion service
✓
✓
Welding involved
-
✓ (preferred)
Thick-wall welding
-
✓ (avoid sensitization)
High temperature service (>450°C)
✓
-
Maximum strength requirement
✓ (higher yield)
-
Standard pressure piping
✓
✓
Quick Rule: For welded applications, choose 316L. For high-temperature service, choose 316.
Frequently Asked Questions (FAQ)
Q: What is the difference between 316 and 316L?
A: 316L has lower carbon content (≤0.03% vs ≤0.08%), which prevents carbide precipitation during welding and eliminates the need for post-weld annealing.
Q: Can 316L pipe be used in high-temperature applications?
A: For continuous service above 450°C, standard 316 is preferred as 316L may have lower creep strength at elevated temperatures.
Q: Is 316 seamless pipe suitable for saltwater?
A: Yes. 316/316L offers excellent resistance to seawater and brackish water, though for stagnant seawater conditions, super duplex (2507) may be recommended.
Q: What standards apply to 316L seamless pipe?
A: Most common: ASTM A312 (general service), ASTM A213 (boiler/heat exchanger), ASTM A269 (precision tubing).
Q: Do you provide custom sizes?
A: Yes. We offer custom OD, WT, and length. Minimum order quantity for custom sizes - please inquire.
Why Choose Our 316/316L Seamless Pipe?
Factory direct - Competitive pricing
Full traceability - Heat number on every pipe
Short lead time - Stock available for standard sizes
Global export - 20+ countries served
Flexible MOQ - Small trial orders welcome
Request a Quote Free samples available for qualified inquiries. A mill test certificate is provided with every shipment.