Water Treatment 304 Seamless Stainless Steel Pipe ASTM A312 OD 6mm-630mm
This Water Treatment 304 Seamless Stainless Steel Pipe is produced for municipal water supply, drinking water distribution and wastewater treatment plants where reliable, hygienic and long-lasting piping is required. The 304 austenitic grade resists rust and general corrosion in fresh water, so the pipe keeps the water clean and avoids the discolouration and leaks that affect ordinary carbon steel or galvanised pipe over time.
Because it is seamless, the pipe has no internal weld bead that could trap deposits or reduce flow, making it a practical choice for pumps, filtration skids and distribution manifolds.
The pipe is supplied in outside diameters from 6 mm to 630 mm and wall thickness from 0.5 mm to 30 mm, pickled and annealed for a clean internal and external surface. Smooth bore, precise dimensions and full traceability help water utilities and contractors meet project specifications. Lengths of 6 m or 12 m are standard, and cut-to-length supply keeps site waste to a minimum on large distribution projects.
| Parameter | Value |
|---|---|
| Material Grade | 304 / UNS S30400 / EN 1.4301 |
| Standard | ASTM A312 / ASME SA312 |
| Outer Diameter | 6 mm – 630 mm |
| Wall Thickness | 0.5 mm – 30 mm |
| Length | 6 m / 12 m or cut to length |
| Water Quality | Suitable for potable water service |
| Surface Finish | Pickled and annealed |
| Manufacturing Process | Cold drawn seamless |
- 304 stainless resists rust and corrosion in fresh water, keeping the water clean and colourless.
- Seamless bore has no weld bead, reducing pressure loss and deposit build-up in the line.
- Smooth pickled surface is easy to clean and supports hygienic water treatment service.
- Wide OD range suits everything from instrument lines to main distribution headers.
- Long service life lowers replacement and maintenance costs for water utilities.
- Full mill test certificate and traceability for project quality assurance.
- Drinking water supply and distribution mains
- Wastewater and sewage treatment plants
- Pump stations and filtration skids
- Irrigation and industrial water lines
- Swimming pool and process water systems
A: Yes. 304 stainless steel is widely used for potable water because it does not rust in fresh water and does not release harmful substances, keeping the water safe and clean.
A: We supply outside diameter from 6 mm to 630 mm and wall thickness from 0.5 mm to 30 mm, which covers small instrument tubing through to large distribution main headers.
A: Yes. Standard lengths are 6 m and 12 m, and we can cut to your exact project length to reduce site waste.
A: The minimum order quantity is 1 ton, stock ships in 7 to 15 days and production takes 20 to 30 days. Contact us for a quotation for your water project.
Every shipment is backed by our experienced export team, who assist with material selection, documentation and logistics so that your procurement runs smoothly from enquiry to delivery. We welcome OEM and ODM orders and can supply trial quantities for evaluation. Please contact us with your drawing or specification for a quotation, free technical advice and the latest stock list for this corrosion-resistant seamless stainless steel pipe range.
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