Send two section dimensions
Flat bar needs both thickness and width, for example 6 x 40 mm. A single number does not identify the rectangular section.
Stainless Steel Flat Bar Supplier
Flat Bar Ordered by
Flat Bar Ordered by
Thickness x Width and Edge Route
FX Stainless Steel supplies 304, 304L, 316 and 316L stainless steel flat bar from China for brackets, frames, supports and machined rectangular blanks. Send thickness x width, manufacturing route, edge condition, tolerance, cut length, quantity and destination so we can confirm the right material and export packing path.
Thickness x Width
Required size wording
Mill / Slit Route
Source to confirm
Edge + Camber
Fabrication checks
Cut Pieces
Length option
Quick Answer
What makes a stainless steel flat bar quotation accurate?
Name the manufacturing route
True mill flat bar, slit or sheared material and cold-drawn bright bar can have different edges, tolerances and fabrication behavior.
Add length and edge requirements
Camber, twist, burrs and cut-length tolerance matter when the bar will be welded into frames or loaded directly into machining.
Section Definition
Thickness x width is only the starting point
A 5 x 50 mm flat bar can arrive through more than one production route. The nominal section may match while the edge profile, surface, camber and width tolerance differ. Buyers should state whether the drawing accepts slit material, requires mill flat bar, or needs a bright route with additional dimensional control.
Thickness
Controls section strength, bending behavior and machining allowance through the narrow face.
Width
Sets the broad face used for brackets, support strips, frames and rectangular blanks.
Edge route
Mill, slit, sheared, deburred or machined edges should be stated where fit-up or handling matters.
Specification Reference
Flat bar details that change supply and fabrication results
| Purchase Item | What to State | Buyer Consequence |
|---|---|---|
| Grade and standard | 304, 304L, 316, 316L or drawing wording; applicable ASTM, JIS, EN or GB/T requirement | Keeps the quotation, MTC, labels and receiving documents aligned |
| Section size | Thickness x width, unit and dimensional tolerance | Prevents confusion with square bar and establishes machining or fabrication allowance |
| Manufacturing route | Mill flat bar, slit or sheared material, cold-drawn bright bar, or supplier proposal | Changes edge shape, surface, tolerance and sometimes the practical size range |
| Edge condition | Mill edge, slit edge, sheared edge, deburred edge or drawing requirement | Affects handling, weld preparation, appearance and width acceptance |
| Length geometry | Full length or fixed cut length, camber, twist and straightness requirements | Important for frame fit-up, automated cutting and long support strips |
| Traceability and packing | MTC, heat number, labels, bundle separation, rust-prevention and destination marks | Keeps grades, sizes and batches identifiable after export transport |
Useful Tool
Open Bar Weight Calculator
Estimate flat bar theoretical weight
Enter thickness, width, grade, length and quantity to estimate theoretical order weight before quotation.
Fabrication Uses
Flat bar applications driven by the rectangular section
Brackets and mounting strips
The broad face provides room for holes, slots and welded connections when thickness, width and edge condition match the drawing.
Mounting stripsBrackets
Frames and support members
Camber and twist deserve attention when several lengths must align during welding or site assembly.
FramesSupports
Guards, rails and visible trim
Visible work needs an agreed surface, edge finish and protective packing rather than a generic polished description.
GuardsVisible trim
Rectangular machined blanks
Fixed cut pieces can reduce saw work, but cut tolerance, burr removal and machining allowance should be written into the order.
Machined blanksCut pieces
Manufacturing Route
Why the source route matters for stainless steel flat bar
Price comparisons are meaningful only when the quotations describe the same route, section tolerance, edge condition and length service.
| Flat Bar Route | What the Buyer May See | RFQ Check | Common Next Step |
|---|---|---|---|
| Mill flat bar | A bar product with mill-defined section and edge profile | Standard, dimensional tolerance, corner or edge condition and surface | Welding, supports, general fabrication or machining |
| Slit or sheared from plate or coil | Cut edges and a surface inherited from the parent sheet, plate or strip | Parent material, burr direction, edge condition, width tolerance and camber | Strips, brackets, formed parts and cut blanks |
| Cold-drawn or bright flat bar | Cleaner surface and a more controlled rectangular section | Actual tolerance, edge profile, straightness and residual machining stock | Fixtures and machining where less surface removal is desired |
| Fixed-length flat pieces | Full material cut to a specified piece length | Length tolerance, end squareness, burrs, piece count and labels | Drilling, milling, welding or assembly batches |
Receiving Inspection
Check edges and full-length geometry before fabrication
A caliper reading at one end cannot show edge burr, camber or twist along the full bar. For export orders, the PO should state the agreed inspection points and whether the material will be accepted by nominal bar dimensions, drawing tolerance or a project-specific check.
Measure thickness and width
Take readings at agreed positions and keep the thickness and width axes clear in inspection records.
Inspect camber and twist
Lay long pieces on a suitable reference or use the buyer's agreed method before bundles are closed.
Record the edge condition
Photos should show burrs, mill edges, deburring and cut ends when these features affect receiving acceptance.
Connect heat and size labels
Bundle marks should link the ordered section to the correct MTC heat number and packing-list line.
Related Pages
Continue the flat bar buying path
Stainless Steel Bar
Browse bar grades, shapes, processing routes and export document options.
Stainless Steel Square Bar
Use square bar when all section sides are equal and corner or twist control drives the blank geometry.
Stainless Steel Round Bar
Use round bar for shafts, pins and turned components specified by diameter.
304 and 304L Stainless Steel Bar
Check grade wording, low-carbon requirements and MTC details for general stainless bar supply.
How to Buy Stainless Steel Bar from China
Compare tolerance, MTC, weight basis, packing and freight terms before choosing a quotation.
Stainless Steel Bar Complete Guide
Compare bar shapes, standards, tolerances and purchasing checks across common routes.
MTC Checklist Before Shipment
Confirm grade wording, heat number, labels and packing list before release.
FAQ
Stainless steel flat bar FAQ
How should I write stainless steel flat bar dimensions?
Write thickness x width, for example 6 x 50 mm, followed by the required length and tolerance. Do not send only one side dimension.
What is the difference between flat bar and square bar?
Flat bar has a rectangular section with width normally greater than thickness. Square bar has equal side dimensions and is ordered by side size.
Is slit flat bar the same as mill flat bar?
No. Slit or sheared material comes from plate, sheet or strip and may have different edges, camber and dimensional behavior. State which route the drawing accepts.
Can stainless steel flat bar be cut to fixed lengths?
Yes. Send the piece length, cut tolerance, end condition, quantity and labeling requirement so the cutting and packing plan can be confirmed.
Which edge conditions can buyers request?
Depending on the route, the order may use mill, slit, sheared, deburred or machined edges. Availability and tolerances must be confirmed for the requested size.
What should be checked before shipment?
Check thickness, width, edge condition, cut length, camber or twist where specified, surface, bundle labels, heat number, MTC and packing-list consistency.
Send thickness x width and the required flat bar route.
Share grade, standard, section size, tolerance, manufacturing or edge requirement, cut length, quantity, application, MTC needs and destination. We will confirm practical supply and export packing options.
Send Flat Bar Inquiry