In water processing, pipe system reliability starts with the right material. Our water treatment grade stainless steel tubing is designed for high-purity applications where leaching is unacceptable. The welded stainless pipe for water purification we manufacture features a full-penetration weld, matching base metal properties. For submerged chemical delivery, our aquatic treatment stainless welded conduit withstands fluctuating pH and pressure. The water system stainless steel welded tube completes the portfolio, offering diameters up to 24 inches for trunk mains. All tubes are solution annealed for maximum ductility.
The Water processing stainless welded steel tube integrates seamlessly into modern treatment plants. Its longitudinal weld is inspected using phased-array ultrasonic testing, guaranteeing integrity. The inside diameter is calibrated to reduce pressure drop, and the external surface is pickled and passivated for optimal hygiene. Available in mill-produced lengths or precision-cut pieces ready for orbital welding, its uniform chemistry ensures compatibility with electro-polishing when a mirror-smooth finish is required. The tube supports velocities up to 15 ft/s without erosion, and its low thermal expansion coefficient reduces joint stress during CIP cycles. With certifications to NSF/ANSI 61 and ASME BPE, this product supports compliance in food-grade and pharmaceutical water handling.
Key Parameters
| Property | Value |
|---|---|
| Chemical Composition (316L) | Cr 16.5-18.5%, Ni 10-13%, Mo 2-2.5%, C ≤ 0.03% |
| Tensile Strength | ≥ 485 MPa (70 ksi) |
| Yield Strength | ≥ 170 MPa (25 ksi) |
| Elongation | ≥ 35% in 2" |
| Hardness | ≤ 90 HRB |
| Operating Temperature | -325°F to 1000°F (-198°C to 537°C) |
| Dimension Tolerance | Specification |
|---|---|
| OD Under 1" | ±0.005 in (0.13 mm) |
| OD 1" to 4" | ±0.010 in (0.25 mm) |
| Wall Thickness | ±10% of nominal |
| Length | Cut to length ±0.125 in (3 mm) |
All dimensions comply with ASTM A554/A554M. Custom cut-to-length services eliminate field welding. We provide full material traceability with each shipment. The product inventory includes schedules 5S, 10S, 40S, and 80S, accommodating diverse pressure ratings. Optional end finishes include plain, beveled, or tri-clamp, simplifying installation in existing skids.
