Contact Us
Products
Home Products Stainless Steel Pipes

Stainless Steel Pipes

Walmay Stainless supplies high-quality stainless steel pipe tube in 304, 316L, 2205, 310S, 904L and more. Sizes from OD 3–630 mm with NO.1/2B/BA/HL finishes, cut-to-size, polishing, passivation, and SGS/ISO certified fast delivery worldwide.

Stainless Steel Pipes Featured Image
Filter by Form
  • Coils
  • Sheets
  • Pipes
  • Bars
  • Profiles
Filter by Grade Family
  • Austenitic Grades
  • Duplex Grades
  • Ferritic Grades
  • Martensitic Grades
  • Precipitation Hardening Grades
Filter by Rolling Condition
  • Cold Rolled
  • Hot Rolled

Reset Filters

Stainless Steel Pipes

Filter By :All
  • All
  • 630
  • 904

Why Walmay for Stainless Steel Pipes

Engineered for endurance

Pipes and tubes meet ASTM A312 / SA312 with high pressure resistance (up to 20 MPa for 304/316L ranges) and proven corrosion performance.

Tailored to your system

From 316L chemical pipelines with smooth IDs to 304 decorative railing tubes in OD 12–630 mm, we align specs to flow, finish, and safety needs.

Certified quality, delivered on time

ISO 9001 + SGS material reports, stable inventory (WT 0.5–20 mm) and logistics coverage via our five subsidiaries (e.g., Shanghai, Wuxi).

Collaborative project support

Free technical consultation, fast response 24/7, documentation packages for audits and commissioning.

Typical Specifications

Item Range / Options
Outside Diameter (OD) 3–630 mm (sanitary: 10–108 mm; precision: 3–25 mm)
Wall Thickness (WT) 0.5–20 mm (common: 0.8/1.2/1.5/2.0/3.0/4.5/6.0 mm)
Length 1–12 m (standard 6 m & 12 m), coil available ≤ 38 mm OD
Finishes NO.1 / 2B / BA, brushed/HL, mechanical/electropolish
Processes Seamless (piercing/rolling), TIG/ERW welded, leveling, passivation
Tests & Docs Hydrostatic / helium leak (as specified), roughness report, MTC, ISO/SGS

Note: Actual pressure/temperature ratings vary by grade, OD/WT, weld vs seamless, and finish; consult Walmay for a verified datasheet per line class.

Product Applications

  • Process & Utilities

    Chemical transfer, steam/condensate, CIP/SIP sanitary loops

  • Water & Marine

    RO/desalination, seawater lines, potable water distribution, heat-exchange coils

  • Energy & Power

    Superheaters, furnace tubes, balance-of-plant piping

  • Architecture & Fabrication

    Handrails, frames, canopies, decorative profiles

  • Precision & Instrumentation

    Sleeves, sensor housings, semiconductor gas lines

How to Select the Right Stainless Steel Pipe Tube

Medium & Corrosion Type

  • Chlorides/sea water → 316L / 2205 / 904L / 444

  • Non-oxidizing acids → 904L / 317L

  • Food contact & hygiene → 304 sanitary (Ra ≤ 0.6 μm), BA/electropolish

Pressure & Temperature

  • High pressure → seamless 316L / 2205

  • ≥ 800 °C service → 310S / 321

Finish & Roughness (Ra)

  • Sanitary/precision → BA + electropolish
  • Architectural → HL/brush, mirror, or PVD color

Fabrication

  • Tight bends/forming → specify WT, grain direction, heat treatment
  • Welding → match filler metal; ensure post-weld cleaning/passivation

Quality & Compliance

  • ISO 9001 quality system; SGS material verification

  • MTC to ASTM/ASME/EN as ordered; optional 3.1/3.2 reports

  • Roughness (ISO 4288), hydro/helium leak, pressure hold, passivation records

  • Partner mills include POSCO and other qualified sources

FAQs

What's the difference between stainless steel pipe and tube?
"Pipe" typically follows nominal pipe size for pressure-bearing service; “tube” focuses on precise OD/WT and finishes. This page uses stainless steel pipe tube to cover both purchasing intents.
Seamless vs welded — how to choose?
For higher pressure or severe cyclic loads, choose seamless; for sanitary/architectural with defined Ra or finish, welded with TIG and inner weld leveling is often ideal.
What Ra is recommended for sanitary media?
For dairy/beverage, Ra ≤ 0.6 μm (ID) is a common target; CIP/SIP systems often require passivation or electropolish.
Do you provide cut-to-length and surface treatments?
Yes. We supply cut-to-size, BA/electropolish, HL/mirror finishing, passivation, marking/traceability, and test documentation for every stainless steel pipe tube order.
Can you help with grade verification and testing?
Yes. PMI, hydrostatic, helium leak, pressure hold, roughness, and corrosion testing are available per project spec.

Contact Us

Connect with our experts for quotations, technical support or tailored stainless steel solutions delivered worldwide.

Download Catalog

Download our full product catalog to explore specifications, certifications and applications trusted by global customers.

Related applications

Need more details on stainless steel products? Feel free to contact Walmay anytime.

Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.

Have Questions? Need Support? Talk to an Expert

    Your Information How can we help?
    Select Your Language