303 Stainless Steel Bar
Best fit for CNC machining, screw-machine work and stronger chip control.
Bar Solutions
Stainless Steel Bar Supply and
Stainless Steel Bar Supply and
Grade Selection Support
Built for machining buyers, project teams and small-batch sourcing. Review common shapes, finish options, tolerance support and grade paths before you send an inquiry.
Round / Hex / Square
Common forms
3 - 300 mm
Typical supply range
303 / 304L / 316L
Key grade paths
h8 - h11
Tolerance review
Browse by Grade
Start with the right stainless steel bar grade
304/304L Stainless Steel Bar
A practical general-purpose option for fabrication, stock supply and custom cutting.
316/316L Stainless Steel Bar
A stronger choice when chloride, marine or chemical exposure matters more.
Specification Reference
General bar supply reference
| Category | Round Bar | Hex Bar | Square Bar | Notes |
|---|---|---|---|---|
| Size Range | 3 - 300 mm | S5 - S75 mm | 4 - 100 mm | Routine stock and project-based sizes can be reviewed by grade and finish |
| Grades | 303 / 304L / 316L | 303 / 304 | 304 / 316L | Grade path depends on machining, corrosion risk and delivery target |
| Surface | Cold Drawn / Polished / Centerless Ground | Cold Drawn / Bright | Cold Drawn / Bright | Finish choice changes machining feel, appearance and tolerance range |
| Service | Cut-to-length | Small batch review | Export packing | Documents, labeling and batch release can be coordinated before shipment |
Available Formats
Choose the bar shape that fits the job
Round Bar
Common for shafts, turned parts, pins and CNC-machined components.
MachiningShaftsGeneral use
Hex Bar
Often used for fasteners, valve parts, couplings and wrench-flat parts.
FastenersValve partsAcross flats
Square Bar
Used where profile control matters for support parts, brackets and machined blanks.
Profile partsStructural blanksCut pieces
Surface Finish
Common finish options for machining and project supply
Cold Drawn
Good dimensional consistency for routine machining work.
Polished
Cleaner surface for visible parts and smoother handling.
Centerless Ground
For tighter diameter control and more demanding shaft applications.
Black Surface
A practical option for rougher project use and follow-up processing.
Service Support
Tolerance, cutting and small-order support
Share the target size, finish and application first. We can then confirm what is routine stock, what needs project review and what is better matched to another grade.
Tolerance support
h8, h9 and h11 can be reviewed by shape, size and finish.
Custom cutting
Cut-to-length support helps buyers avoid ordering full bar lengths when the job needs shorter pieces.
Small-batch review
Trial and replenishment orders can be discussed around actual stock and processing conditions.
Bar Insights
Read the core buying guides behind this bar range
Stainless Steel Bar Price Guide 2026 for Southeast Asia Buyers
See how grade, finish, tolerance and destination change the real quote logic for bar orders.
Import Stainless Steel Bars into Vietnam: 2026 Buyer Guide
Review ASTM standards, Form E, MTC and port-planning points before a Vietnam bar shipment.
316 vs 316L Stainless Steel Bar for Oil & Gas
Compare welding risk, sensitization and offshore-use logic for higher-spec 316 and 316L bar review.
Buyer FAQ
Quick answers before you send a bar inquiry
Which stainless steel bar grade is best for CNC machining?
303 is usually the first grade to review for CNC machining because it is easier to cut and helps chip control.
When should I choose 316 bar instead of 304 bar?
Choose 316 when the part will see more chloride, marine air or chemical exposure.
Can I ask for short cut lengths instead of full bars?
Yes. Cut-to-length support can be reviewed based on size, finish and order quantity.
Do you support hex and square stainless steel bars?
Yes. Round, hex and square bars can all be reviewed, but routine ranges depend on grade and finish.
Share the bar size, grade and job condition.
Send the shape, size range, finish, quantity and application. We will reply with a grade path and supply suggestion that fits the job.
Contact Sales Team