Seamless Metric Tubing
Seamless Metric Tubing
Unlike welded tubing, the homogeneous nature of seamless stainless steel tubing makes it stronger, superior to corrosion resistance, and higher pressure resistant. These precision manufactured tubes are cold finished to tight dimensional tolerances to meet exacting engineering requirements. Key markets for seamless metric tubing include:
- Alternative fuels
- Chemical and petrochemical industries
- Marine applications
- Mechanical and plant construction
- Oil and gas applications
- Power generation
Product Specifications
ASTM A269, ASTM A213 / ASME SA213 (Seamless)
ASTM A269, ASTM A249 / ASME SA249 (Welded)
Domestic tube is bright annealed.
Imported tube is solution annealed and O.D. polished to a 320-grit finish.
Size Range
Outside Diameter (OD) | Wall Thickness |
3mm–42mm | 0.5mm–4mm |
Chemical Requirements
T316/L (UNS S31600/UNS S31603)
Composition %
UNS | C Carbon | Mn | P | S | Si | Cr | Ni Nickel | Mo Molybdenum |
S31600 | 0.08 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
S31603 | 0.030 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 16.0–18.0 | 10.0–18.0 | 2.00–3.00 |
Chemical Requirements
T316/L (UNS S31600/UNS S31603)
Composition %
UNS | C | Mn | P | S | Si | Cr | Ni | Mo |
S31600 | 0.080 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
S31603 | 0.030 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 16.0–18.0 | 10.0–15.0 | 2.00–3.00 |
Dimensional Tolerances
OD | OD Tolerance | Wall Tolerance |
≤ 38mm (1.5") excl | ± .005" (.13mm) | ± 10% |
> 38mm–89mm (1.5"–3.5") excl | ± .010" (.25mm) | ± 10% |
Mechanical Properties
Yield Strength: | 30 ksi min |
Tensile Strength: | 75 ksi min |
Elongation (min 2"): | 35% |
Hardness (Rockwell B Scale): | 90 HRB max |
