Product Overview – ASTM A312 TP316L Welded Pipes
ASTM A312 TP316L is the low carbon version of 316 stainless steel. The reduced carbon content (maximum 0.03%) minimizes carbide precipitation during welding, reducing the risk of intergranular corrosion.
TP316L welded pipes are manufactured through precision forming and longitudinal welding, followed by solution annealing and inspection in accordance with ASTM standards.
This grade is widely selected for marine installations, pharmaceutical plants, chemical processing units, and fabricated structures exposed to chloride-rich conditions.
Compared to standard 316, 316L offers improved reliability in welded assemblies.
Standard & International Identification - ASTM A312 TP316L Welded Pipes
Technical Specifications – TP316L Welded Pipes
| Manufacturing Method: | Welded / ERW |
| Available Sizes: | 1/8″ NB to 36″ NB |
| Wall Thickness: | SCH 5S to SCH 160 |
| Standard Length: | 6m, 12m, Custom Length |
| Surface Finish: | Pickled, Annealed, Industrial Finish |
| Pipe Ends: | Plain End (PE), Beveled End (BE) |
| Inspection: | Hydrostatic, Weld Seam Testing, PMI |
| Certification : | EN 10204 3.1 / 3.2 MTC |
| Dimensional compliance: | ASME B36.19M. |
All specifications are in accordance of ASTM A312 / ASME SA312 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition of ASTM A312 TP316L Welded Pipes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C) | 0.03% |
| Manganese (Mn) | 2.00 % |
| Silicon (Si) | 1.00% |
| Phosphorus (P) | 0.045 % |
| Sulfur (S) | 0.030 % |
| Chromium (Cr) | 16.0 – 18.0% |
| Nickel (Ni) | 10.0 – 14.0% |
| Molybdenum (Mo): | 2.00 – 3.00% |
| Iron (Fe) | Balance |
Note: Low carbon improves post-weld corrosion resistance.
Mechanical Properties of ASTM A312 TP316L Welded Pipes
| Property | Minimum Value |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | 35% |
316L maintains strength while enhancing weld performance.
Corrosion Behaviour & Operational Advantages- ASTM A312 TP316L Welded Pipes
SS 316L welded pipes provide:
For fabricated marine or chemical systems, TP316L is widely specified.
Industrial Usage Areas of ASTM A312 TP316L Welded Pipes
- 🔸Coastal construction projects
- 🔸Marine piping systems
- 🔸Pharmaceutical manufacturing
- 🔸Chemical transfer lines
- 🔸Water treatment facilities
- 🔸Food processing equipment
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