304
General purpose
Widely used for frames, brackets, equipment supports, architectural fabrication and general stainless structures.
Product form hub · Channel
Stainless Steel Channel
Specify stainless steel channel by grade, profile type, web depth, flange width, thickness, production route, finish and length. Use the size references and selection notes below to turn a general channel request into a clear purchasing specification.
304 / 304L / 316 / 316L
ASTM A276 / A484 route
U-channel, C-channel & formed profiles
U / C channel · product visual
Common grades304 / 304L / 316 / 316L
Common market depth20 to 200+ mm by route
Common thickness1.5 to 10+ mm by route
Build the specification
01Choose grade
02Set web depth
03Set flange / thickness
04Choose profile route
05Confirm finish / length
06Send RFQ
Product overview
What to define before buying stainless steel channel
A channel order should identify the profile geometry and the way the section is produced. Web depth, flange width and thickness may look similar across products while corner radius, taper, straightness and finish can differ by route.
Material304 / 304L
Common for general fabrication, equipment frames, supports and architectural work in moderate environments.
Material316 / 316L
Frequently selected for coastal, washdown, chemical and other more demanding corrosion conditions.
GeometryWeb × flange × thickness
State the channel dimensions directly, for example 100 × 50 × 5 mm, plus length and any critical radius or tolerance.
Profile routeHot rolled, welded or formed
The production route affects section geometry, corner radius, dimensional tolerance, surface condition and cost.
M03 · Grade selection
Choose the grade from corrosion, welding and service needs
Stainless channels are commonly welded into frames, supports and equipment structures. Grade selection should follow the actual environment, fabrication route and maintenance conditions rather than only the nominal section size.
304L
Weld-friendly low carbon
Common where substantial welding is expected and a low-carbon 304 route is preferred.
316
Higher corrosion resistance
Often considered for marine-adjacent, chemical, washdown and more chloride-exposed service.
316L
Corrosion + welding route
Frequently specified where both welding and improved chloride resistance are important.
M04 · Technical data
Common stainless steel channel size reference
The dimensions below are common market-style channel references for early design and RFQ preparation. Exact stock and dimensional series vary with grade, whether the channel is rolled or formed, and the supplier's manufacturing route.
| Nominal section H × B × t | Common grade routes | Typical profile route | Typical use | Buying note |
|---|---|---|---|---|
| 20 × 10 × 1.5 mm | 304 / 304L | Cold formed / brake formed | Light trim, guides and covers | Confirm inside radius and leg squareness |
| 25 × 15 × 1.5 mm | 304 / 304L | Cold formed | Light frames and edge protection | Often supplied from strip or sheet route |
| 30 × 15 × 2 mm | 304 / 316L | Cold formed / welded | Equipment framing | Specify visible-face finish if cosmetic |
| 40 × 20 × 2 mm | 304 / 304L / 316L | Cold formed / laser welded | Frames, rails and supports | Common fabricated profile family |
| 50 × 25 × 3 mm | 304 / 316L | Formed / welded / rolled by series | General support channel | Confirm corner radius and straightness |
| 60 × 30 × 3 mm | 304 / 316 / 316L | Formed / welded | Machine frames and equipment supports | State length and cut tolerance |
| 80 × 40 × 4 mm | 304 / 316L | Welded / hot-finished by route | Heavier frames and brackets | Confirm section tolerance and surface route |
| 100 × 50 × 5 mm | 304 / 304L / 316L | Hot rolled / laser welded / fabricated | Structural supports and skids | Specify route if section geometry is critical |
| 120 × 60 × 5 mm | 304 / 316L | Rolled / welded / fabricated | Industrial support structures | Confirm flange taper or parallel-flange requirement |
| 150 × 75 × 6 mm | 304 / 316L | Heavy welded / rolled profile | Platforms and heavier frames | Mill route and tolerance become important |
| 200 × 75 × 6–8 mm | 304 / 316L / project grades | Rolled / welded / fabricated | Heavy-duty support work | Check actual standard series and load design |
Market reference only: stainless channels are available in multiple dimensional series, from light formed profiles to much heavier structural channels. For procurement, always state the complete section geometry, grade, production route, length and any critical tolerance or finish.
M05 · Dimensions and finish
Define the channel profile, production route and finish
Two channels with the same nominal depth may have different flange widths, corner radii, wall thickness, taper and surface condition. These details should be controlled when they affect fit-up or appearance.
Dimensions
- Web depth (H)
- Flange width (B)
- Thickness (t)
- Inside radius / corner geometry when critical
- Standard length or cut length
- Straightness / twist tolerance when assembly-critical
Profile route
- Hot-rolled structural channel
- Cold-formed / brake-formed channel
- Laser-welded channel
- Built-up / fabricated channel
- Parallel flange or tapered flange where relevant
Surface & processing
- Hot-finished / pickled mill surface
- 2B / bright formed route
- Brushed / No.4 cosmetic surface
- Cut, drilled, slotted or machined ends
- Protective film / packing for visible surfaces
M06 · Selection guide
Match the channel route to the application
General welded fabrication304L is a common starting point for frames and supports when substantial welding is expected and the environment is not highly aggressive.
Visible architectural workSpecify brushed or polished faces, corner appearance and scratch protection rather than ordering only by section size.
Heavier structural supportConfirm whether the design needs a rolled structural series or whether a formed / welded channel is acceptable. Section properties and tolerances may differ.
Coastal / chloride exposure316 / 316L is commonly considered before 304, but the real environment, design and maintenance conditions still control grade selection.
Worked example
Example of a clear stainless channel specification
A useful RFQ identifies both the section geometry and the production route so the supplier can compare the request with the correct profile family.
Example only
This is a normal buying example, not a live-stock claim. Use the project drawing and real service conditions to finalize the order.
ProductStainless steel channel
Standard routeASTM A276/A276M with ASTM A484/A484M general requirements
Grade316L
Section100 × 50 × 5 mm (H × B × t)
Length6 m or cut-to-length as required
Route / finishRolled or welded channel route, mill finish
Order requirementState quantity, destination, cut tolerance and document requirements in the RFQ
M08 · Applications
Where stainless steel channel is commonly used
Frames & skids
Welded equipment bases, support frames and stainless fabrication where open-section stiffness is useful.
Brackets & supports
Wall supports, equipment mounts, reinforcement members and fabricated structural components.
Platforms & walkways
Support members for industrial platforms, access systems and stainless service structures.
Architectural framing
Visible rails, façade support, trim and decorative channel details requiring a controlled finish.
Food & process equipment
Framework and machine supports where corrosion resistance, washdown and cleanability matter.
Marine / outdoor structures
316 / 316L channels are commonly considered for more demanding chloride exposure.
Important limitation: “stainless steel channel” is not one single geometry. Hot-rolled structural channels, cold-formed channels, laser-welded channels and press-brake fabricated sections can differ in flange taper, inside radius, straightness, mechanical properties and tolerance. If these details affect the design, identify the required production route and dimensional standard rather than ordering only by H × B × t.
M10 · Standards
Standards and purchasing references
Use the latest project-approved revision and state it on the purchase specification. Standard numbers below are shown as technical references only.
Common stainless bar-and-shape specification used for hot-finished and cold-finished wrought stainless shapes in many grades.
General requirements for wrought stainless bars, billets, shapes and forgings, including dimensional and ordering controls used with product specifications.
For section geometry, radius, flange taper, finish, cutting, welding, inspection or tighter tolerance, state the requirement directly on the RFQ or drawing.
M11 · FAQ
Stainless steel channel FAQ
How is stainless steel channel sized?
A practical buying format is web depth × flange width × thickness, followed by length. For example, 100 × 50 × 5 mm channel in 6 m lengths. Add the grade, profile route, finish and any critical radius or tolerance.
What grades are most common?
304 / 304L and 316 / 316L are among the most common stainless channel grades. The correct choice depends on corrosion exposure, welding and the final service environment.
What is the difference between rolled and formed channel?
Rolled channel is produced as a structural shape, while formed channel is bent from strip, sheet or plate. Corner radius, flange geometry, dimensional tolerance and mechanical properties can differ, so specify the route when it matters.
Can stainless channel be polished?
Yes. Formed and fabricated channels are often available with brushed or polished visible surfaces. Specify which faces require a cosmetic finish and whether protective film or special packing is needed.
Which standard is commonly used for stainless channel?
ASTM A276/A276M is a common stainless bars-and-shapes route, with ASTM A484/A484M providing general requirements. The final project drawing and purchase specification should control the order.
Product details
What buyers usually verify visually
These three areas are ready for your own channel photos. Replace only the background images later; the page structure and copy can stay unchanged.
Channel geometryWeb depth, flange width, thickness, radius and section shape
Surface finishMill, pickled, brushed, polished or fabricated appearance
Cutting & packingLength, cut ends, bundled profiles and protection for visible surfaces
Channel resources
Continue from specification to purchase
Material hubStainless Steel
Review the parent material hub and related stainless steel product forms.
Open stainless steel hub → TechnicalTechnical ResourcesUse standards, comparisons and engineering references to clarify the purchase specification.
Open technical resources → SourcingRequest a QuoteMove from a reviewed specification to a purchasing conversation.
Open RFQ page →M13 · Technical reference
Reference basis for this channel guide
The page uses the ASTM A276/A276M stainless bars-and-shapes route, ASTM A484/A484M general requirements and common commercial stainless channel dimension patterns. Exact stock, tolerance, finish and certification should be confirmed for the actual order.
M14 · RFQ
Request a technical quote
For a faster review, include the grade, profile type, web depth, flange width, thickness, production route, finish, length, quantity, destination and any cutting or document requirement.
- Grade / material designation
- Web depth × flange width × thickness
- Rolled / formed / welded profile route
- Length, finish and cutting requirement
- Quantity, destination and required documents