SUS316L SCH 40 SS Welded Pipe is a welded stainless steel pipe that conforms to JIS G3459 (Japanese Industrial Standard). It is made of SUS316L alloy (a low-carbon, corrosion-resistant steel) and is classified as Schedule 40 pipe (referring to its wall thickness and pressure rating). It is used for fluid and gas transportation in industries such as chemical processing, petrochemical, and shipbuilding.
JIS G3459 Standards and Grades
SUS316 – Equivalent to ASTM A312 TP316, contains molybdenum for enhanced corrosion resistance, especially in marine and chemical environments.
SUS316L – A low-carbon version of SUS316,offering improved weldability and resistance to sensitization.
JIS G3459 Stainless Steel Pipes Specification
| Product Attributes | Description |
|---|---|
| Standard | JIS G3454 |
| Material Grades | SUS304, SUS304L, SUS316, SUS316L, SUS321, etc. |
| Manufacturing Process | Seamless (SMLS), Welded (WLD) |
| Outer Diameter | 6 mm – 508 mm |
| Wall Thickness | 0.5 mm – 40 mm |
| Length | 4000 mm – 12000 mm (or as per requirements) |
| End Finish | Plain End (PE), Beveled End (BE), Threaded End (TE) |
| Surface Treatment | Pickling, Polishing, Annealing, and Pickling |
JIS G3459 SUS304 SUS316L Stainless Steel round Pipes Chemical Composition
| Grade | Carbon (C) | Chromium (Cr) | Nickel (Ni) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Molybdenum (Mo) |
|---|---|---|---|---|---|---|---|---|
| SUS304 | ≤ 0.08% | 18.0 – 20.0% | 8.0 – 10.5% | ≤ 2.0% | ≤ 1.0% | ≤ 0.045% | ≤ 0.030% | – |
| SUS316 | ≤ 0.08% | 16.0 – 18.0% | 10.0 – 14.0% | ≤ 2.0% | ≤ 1.0% | ≤ 0.045% | ≤ 0.030% | 2.0 – 3.0% |
JIS G3459 SUS304 SUS316L Stainless Steel Pipes Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| SUS304 | ≥ 520 MPa | ≥ 205 MPa | ≥ 40% | ≤ 200 HB |
| SUS316 | ≥ 515 MPa | ≥ 205 MPa | ≥ 40% | ≤ 200 HB |
JIS G3459 SUS304 SUS316L Stainless Steel Welded Pipes Applications
Chemical and petrochemical processing
Food and beverage industries
Heat exchangers and boilers
Pharmaceutical and medical equipment
Oil and gas pipelines
Marine and seawater systems
Gnee Factory Capacity
Factory Capacity: Over 50,000 square meters of production area, equipped with CNC cutting, slitting, and polishing lines, with an annual export volume exceeding 30,000 tons. Fully ISO 9001, SGS, and BV certifications are in place.
Quality Assurance: 100% PMI testing, ultrasonic flaw detection, and mechanical property testing are performed. Advanced annealing and leveling equipment ensures consistent flatness and precision.
Global Market: Renowned for consistent quality and on-time delivery, we supply customers in Europe, the Middle East, Southeast Asia, and South America.
Packaged in bales or laminated wooden crates, wrapped in plastic, and appropriately protected to ensure seaworthiness for transport, or as required.
Marking should comply with Specifications . Marking should include whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.
