Low-carbon 316L welded stainless steel pipe with molybdenum addition for superior chloride and seawater corrosion resistance. Bright annealed, pickled and polished as required.
316L welded pipe is formed from a pickled 316L strip, welded longitudinally, then bright annealed. The “L” means extra low carbon (≤ 0.03 %), which resists carbide precipitation and intergranular corrosion after welding.
Why 316L over 304?
Chemical Composition (AISI 316L)
| Element | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| Content % | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 16.0 – 18.5 | 10.0 – 14.0 | 2.0 – 3.0 |
Mechanical Properties
- Tensile strength (σb): ≥ 480 MPa (70 ksi)
- Yield strength (σ0.2): ≥ 175 MPa (25 ksi)
- Elongation (δ): ≥ 40 %
- Density: 7.98 g/cm³
Standard Sizes
| Parameter | Range |
|---|---|
| Outer Diameter | 6 mm – 630 mm |
| Wall Thickness | 0.5 mm – 12 mm |
| Length | 5.8 m / 6 m (cut to length on request) |
| Surface | 2B / pickled / bright annealed / brushed / mirror |
| Standard | ASTM A312 / AISI 316L / EN 1.4404 / JIS SUS316L |
Applications
316L welded pipe is used in seawater piping, chemical and petrochemical lines, desalination, food and dairy processing, pharmaceutical tubing, heat exchangers, architectural handrails and general welded pipe systems. For seamless alternative, see our 304 seamless stainless tube.
Quality Tests
Hydrostatic test, eddy current test, flattening, flaring, intergranular corrosion test and PMI spectrometer check are all available. Mill test certificate (EN 10204 3.1) included with every order.
Send OD, wall, length and quantity — we confirm price, stock and delivery within 24 hours.
GET A QUOTE
