Sino Steel supplies stainless steel round, flat, square and hex bars in 201, 304/304L, 316/316L, 309/309S, 321, 2205, 410 and 904 grades. As a stainless steel bar manufacturer and supplier for machining, fabrication and project purchasing, we can arrange hot-rolled, cold-finished, peeled, ground, polished and cut-length supply routes.
Start with the cross-section on the drawing. A stainless steel bar factory measures and finishes each shape differently, so the RFQ should use the dimension format that matches the actual bar.
Common for shafts, pins, valve parts, machined components and general fabrication.
Order by diameter × length.Used for brackets, supports, fabricated components and general stainless construction.
Order by thickness × width × length.Used as solid section for fabrication, components and machining blanks.
Order by side × side × length.Useful for fittings and machined parts where a hex section reduces later machining.
Order by across-flats size × length.Send the grade exactly as written on the drawing or material list. The manufacturer review then matches the grade to the required bar shape, finish, heat-treatment condition and applicable product standard.
Regular factory and mill supply grades for machining, fabrication and general stainless bar requirements.
Supplied when the project or finished component calls for a 316-series stainless bar route.
These grades are usually quoted from a defined temperature, fabrication or project requirement rather than treated as ordinary 304 bar stock.
2205 follows a duplex stainless route, while 410 and 904 require their own material and manufacturing review.
Buyers can start with grade, bar shape and size. The stainless steel bar supplier then confirms the applicable product standard and general dimensional requirements before the factory route is released.
304, 2205 and 410 can be supplied as bars, but the final standard and condition still depend on product form and intended service.
The factory finishing route should follow the finished diameter, dimensional tolerance, surface condition and downstream machining requirement. One stainless grade can be supplied in several different bar conditions.
Common for larger sections, fabrication and machining blanks where a mill-finished surface is acceptable.
Used where closer dimensional control and a cleaner finished surface are important to the next operation.
Factory surface removal can be arranged on suitable round-bar orders when the buyer needs a cleaner machining blank.
Used where diameter control, straightness and surface condition need to be closer to the finished shaft or component requirement.
If the bar will become a shaft, pin, valve stem or precision-machined component, the buyer may care more about finished diameter, straightness and surface condition than about the original mill surface.
Useful when the outer mill surface should be removed before further machining.
Selected where closer diameter control and a more uniform finished surface are required.
Available when the component or downstream process needs a smoother visual or functional surface.
Oiling, wrapping or surface separation can be used when the finished factory surface needs protection during storage and shipment.
We do not publish one oversized range for every bar form. Send the actual section and finished length first; the factory and mill supply route can then be confirmed from grade, quantity and finish.
| Bar Shape | How to Specify It | Example RFQ Format |
|---|---|---|
| Round Bar | Diameter × Length | Ø80 mm × 6000 mm |
| Flat Bar | Thickness × Width × Length | 12 × 80 × 6000 mm |
| Square Bar | Side × Side × Length | 40 × 40 × 6000 mm |
| Hex Bar | Across Flats × Length | AF 36 mm × 3000 mm |
The manufacturer can then review whether extra material should remain for facing, turning, grinding or other later machining.
Factory dimensional inspection should follow the bar geometry rather than applying the same measurement checklist to round, flat, square and hex sections.
Diameter and straightness are checked where they affect machining allowance, shaft alignment or final assembly.
Square bar is reviewed by side and diagonal; hex bar is checked across flats, together with twist and straightness where required.
Thickness, width, straightness and edge condition are checked against the confirmed bar supply route.
PMI supports alloy identification. Clean manufacturer handling helps protect a peeled, ground or polished stainless bar after the correct grade has already been produced.
PMI can support grade-family identification where mixed stainless bars are handled in the same project.
Distinct alloy routes make physical grade verification useful when the buyer or project requires added material-identity control.
Peeled, ground and polished bars should be kept away from avoidable rough contact and carbon-steel contamination where the surface condition matters.
PMI supports physical alloy checks, while the MTC carries the broader mill / manufacturer test information for the heat.
Factory saw cutting can reduce handling and later machining work when the buyer needs short blanks rather than full mill lengths.
Bars can be prepared into shorter finished lengths or machining blanks for suitable orders.
Include the final component length or diameter if extra material should remain for turning, facing or grinding.
Finished length and cut-end condition are checked before bundling, palletizing or boxing.
Heat-treatment or other delivery condition is confirmed from the grade and product standard when it forms part of the order.
Mill and manufacturer records need to remain connected when a long stainless bar is cut into shorter machining blanks or repacked into smaller bundles.
Cutting changes the piece length, not the material identity required by the order.
A stainless steel bar supplier should match packing to bar length, weight, surface finish and handling risk instead of using one bundle method for every order.
Multiple steel straps and several support points are used to reduce bending and handling damage on long bundles.
Pallets or boxes can be used where short pieces are easier and safer to handle as compact packages.
Cleaner separators, wrapping and temporary rust protection can be added when the finished factory surface needs protection.
Bundle or box identity remains linked to grade, heat and shipment records where traceability is required.
For flat stainless material with multiple finishes, cutting and PMI options.
View Stainless Steel Plate →For master coil, slit coil and coil-fed processing with multiple stainless finishes.
View Stainless Steel Coil →For seamless and welded stainless pipe and tube with finish, PMI and testing options.
View Stainless Steel Pipe →For projects where the specified bar material is carbon steel rather than stainless.
View Carbon Steel Bar →Send grade, bar shape, size, length, quantity and destination. Add hot-rolled, cold-finished, peeled, ground or polished surface requirements when they matter to the finished component.
Yes. 316L and 2205 are part of our stainless bar supply routes. The final size, finish, standard and delivery condition are confirmed from the order requirement.
Yes. These factory finishing routes can be arranged for suitable bar orders when the buyer requires a cleaner surface, closer size control or less later machining.
Yes. Fixed-length saw cutting can be arranged, and machining allowance can be reviewed from the finished part drawing or target dimension.
No. PMI supports physical alloy identification. The MTC contains broader mill / manufacturer test information for the heat or batch.
Grade, bar shape, size, finish, quantity and destination are enough to start. If the bar will be machined later, add the finished-part requirement or upload the drawing.
