JUDE STEEL MANUFACTURING CO., LTD
| Packaging Details | Standard Package |
| Standard | ASTM A312 / ASME SA312 |
| Supply Ability | Adequate production |
| Delivery Time | 8 ~ 14 days |
| Length | 5.8 m, 6 m, 11.8 m, 12 m; Custom Lengths Available |
| WT | 0.5–40 mm |
| Shape | Round |
| Advantage | High Corrosion Resistance |
| Payment Terms | T/T |
| Grade | 316L |
| OD | 6–630 mm |
| Product name | 316L Seamless Stainless Steel Pipe |
| Place of Origin | China |
| Model Number | 316L |
| Certification | ISO,SGS,CE,BIS |
| Brand Name | JUDE STEEL |
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Product Specification
| Packaging Details | Standard Package | Standard | ASTM A312 / ASME SA312 |
| Supply Ability | Adequate production | Delivery Time | 8 ~ 14 days |
| Length | 5.8 m, 6 m, 11.8 m, 12 m; Custom Lengths Available | WT | 0.5–40 mm |
| Shape | Round | Advantage | High Corrosion Resistance |
| Payment Terms | T/T | Grade | 316L |
| OD | 6–630 mm | Product name | 316L Seamless Stainless Steel Pipe |
| Place of Origin | China | Model Number | 316L |
| Certification | ISO,SGS,CE,BIS | Brand Name | JUDE STEEL |
| High Light | 316H Stainless Steel Welded Pipe ，316L Stainless Steel Welded Pipe ，Stainless Steel Weld Pipe ASTM A213 | ||
Standard: ASTM A312
Grade: 316L
OD: 6 - 630mm
WT: 0.5–40 mm
Length: 5.8 m / 6 m / 11.8 m / 12 m
Custom Sizes: Available upon request
| Specification | Details |
|---|---|
| Product Name | 316L Seamless Stainless Steel Pipe |
| Standard | ASTM A312 / ASME SA312 |
| Grade | 316L |
| UNS | S31603 |
| Material Type | Austenitic Stainless Steel |
| Manufacturing Process | Seamless |
| Outside Diameter (OD) | 6–630 mm |
| Wall Thickness | 0.5–40 mm |
| Length | 5.8 m, 6 m, 11.8 m, 12 m; Custom Lengths Available |
| Schedule | SCH 5S, 10S, 40S, 80S, 160S, XXS; Custom Available |
| Surface Finish | Pickled & Annealed; Bright Annealed Available |
| Pipe Ends | Plain End, Beveled End, Threaded End |
| Heat Treatment | Solution Annealed |
| Tolerance | According to ASTM A312 |
| Testing | Hydrostatic / Nondestructive Testing as Applicable |
| Inspection | Dimensional, Surface, Chemical & Mechanical Testing |
| MTC | EN 10204 3.1 Certificate Available |
| Protective Packaging | Plastic Caps, PVC Film, Bundles, Export Packaging |
| Customization | OD, Wall Thickness, Length & End Finish Available |
| Main Applications | Chemical Processing, Marine Engineering, Petrochemical, Seawater Systems, Heat Exchangers |
316L stainless steel welded pipe, sometimes referred to as A4 stainless steel or marine grade stainless steel, is the second most common austenitic stainless steel pipe after 304/A2 stainless steel. Its primary alloying constituents after iron are chromium (between 16-18%), nickel (10-12%), and molybdenum (2-3%), with small quantities of silicon, phosphorus & sulfur also present.
The addition of molybdenum provides greater corrosion resistance than 304, with respect to localized corrosive attack by chlorides and to general corrosion by reducing acids, such as sulfuric acid. 316L grade is the low carbon version of 316 stainless steel. When cold worked, 316 can produce high yield and tensile strengths similar to Duplex stainless grades.
It is commonly used in the chemical and petrochemical industry, in food processing, pharmaceutical equipment, medical devices, potable water, wastewater treatment, marine applications, and architectural applications near the seashore or in urban areas.
Common Size Range of 316L Stainless Steel Tube| Nominal Pipe Size | Typical OD |
|---|---|
| 1/2" | 21.3 mm |
| 1" | 33.4 mm |
| 1-1/2" | 48.3 mm |
| 2" | 60.3 mm |
| 3" | 88.9 mm |
| 4" | 114.3 mm |
| 6" | 168.3 mm |
| 8" | 219.1 mm |
| 10" | 273.1 mm |
| 12" | 323.9 mm |
| 16" | 406.4 mm |
| 20" | 508.0 mm |
| 24" | 609.6 mm |
316L stainless steel is an austenitic stainless steel with low carbon content. According to ASTM A312 / ASME SA312, the typical chemical composition requirements are:
| Element | Composition (wt. %) |
|---|---|
| Carbon (C) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.0–18.0 |
| Nickel (Ni) | 10.0–14.0 |
| Molybdenum (Mo) | 2.0–3.0 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
| Property | Typical Value |
|---|---|
| Material | 316L / UNS S31603 |
| Material Type | Austenitic Stainless Steel |
| Density | ~8.00 g/cm³ |
| Melting Range | ~1375–1400°C |
| Elastic Modulus | ~193 GPa |
| Poisson's Ratio | ~0.30 |
| Thermal Conductivity | ~16.3 W/m·K at 100°C |
| Specific Heat Capacity | ~500 J/kg·K |
| Electrical Resistivity | ~0.74 μΩ·m at 20°C |
| Coefficient of Thermal Expansion | ~15.9 × 10⁻⁶ /K (20–100°C) |
| Magnetic Property | Generally non-magnetic in annealed condition |
| Crystal Structure | Face-Centered Cubic (FCC), Austenitic |
According to ASTM A312 / ASME SA312, the typical minimum mechanical requirements for 316L stainless steel pipe (UNS S31603) are:
| Property | Requirement |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength (0.2% Offset) | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness, Brinell | ≤ 217 HB |
| Hardness, Rockwell B | ≤ 95 HRB |
| Feature | 316L Seamless Pipe | 316L Welded Pipe | 316H Welded Pipe |
|---|---|---|---|
| Grade | 316L / S31603 | 316L / S31603 | 316H / S31609 |
| Manufacturing | Seamless | Welded | Welded |
| Carbon | ≤0.030% | ≤0.030% | 0.04–0.10% |
| Weld Seam | None | Yes | Yes |
| Corrosion Resistance | Excellent | Excellent | Excellent |
| Weldability | Excellent | Excellent | Good |
| High-Temperature Strength | Good | Good | Better |
| Sensitization Resistance | Excellent | Excellent | Lower than 316L |
| Cost | Higher | Lower | Medium–High |
| Typical Standard | ASTM A312 | ASTM A312 | ASTM A312 / A358 depending on product |
| Main Applications | Chemical, high-pressure piping, marine grade 316L steel pipe | Chemical, water, process piping | High-temperature & pressure service |
ASTM A312 316L seamless stainless steel pipe is an austenitic stainless steel pipe manufactured without a welded seam, typically supplied in accordance with ASTM A312 / ASME SA312. It is widely used for corrosive and demanding industrial services.
2. What is the UNS number for 316L stainless steel?The UNS designation for 316L is UNS S31603.
3. Why is 316L suitable for chemical applications?316L contains chromium, nickel, and 2–3% molybdenum, providing excellent resistance to general corrosion, pitting, and crevice corrosion. Its low carbon content also provides good resistance to sensitization after welding.
4. Is 316L suitable for marine applications?Yes. 316L provides significantly better chloride and seawater corrosion resistance than 304 stainless steel, making it suitable for many marine and coastal applications.
However, continuously immersed or highly aggressive seawater environments may require Duplex 2205 or higher-alloy materials.
5. What is the difference between 316 and 316L?The main difference is carbon content:
The lower carbon content of 316L makes it particularly suitable for welded piping systems.
6. Is ASTM A312 316L pipe seamless?Yes. ASTM A312 covers seamless, welded, and heavily cold-worked austenitic stainless steel pipes. When specified as 316L seamless pipe, the pipe is manufactured without a longitudinal welded seam.
7. What sizes are available?Typical supply ranges can include:
Actual available combinations depend on the manufacturing process and applicable dimensional requirements.
8. What surface finishes are available?Common finishes include:
The appropriate finish depends on the application and customer requirements.
9. Can 316L seamless pipe be welded?Yes. 316L has excellent weldability and is widely used in welded piping systems. Its low carbon content helps reduce the risk of carbide precipitation during welding.
10. What industries use 316L seamless stainless steel pipe?Common applications include:
316L is generally non-magnetic in the annealed condition. However, some magnetism may develop after significant cold working.
12. Why choose 316L seamless pipe instead of 304L?316L contains molybdenum, giving it superior resistance to chloride-induced pitting and crevice corrosion compared with 304L. It is therefore preferable for many chemical, marine, coastal, and chloride-containing environments.
Company Details
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
40,000 tons-50,000 tons
Employee Number:
80~99
Ecer Certification：
Verified Supplier
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