VT machining offers CNC Polishing for SGCC Steel (JIS G3302 hot-dip galvanised), typically supplied cold-rolled, HDG coated. Thicker hot-dip zinc than SECC for outdoor corrosion protection.
CNC Polishing Notes for SGCC Steel
SGCC Steel polishes to a bright finish; the final grit is chosen to meet the cosmetic standard.
Process Data for CNC Polishing SGCC Steel
| Best achievable finish | Ra 0.03-0.05 µm |
|---|---|
| Final abrasive | Fine alumina or polishing compound |
Typical values for SGCC Steel, Cold-rolled, HDG coated; confirmed on the first part.
SGCC Steel Data Relevant to CNC Polishing
| Equivalent designations | JIS G3302 hot-dip galvanised |
|---|---|
| Typical supply condition | Cold-rolled, HDG coated |
| Hardness (typical) | ~50-65 HRB |
Typical values; we work to your drawing and mill certificate.
More on CNC Polishing Steel
Finishing options, quality documentation and general cnc polishing guidance for all steel grades are on our CNC Polishing Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Polishing SGCC Steel
Send a STEP/IGES model or PDF drawing, confirm SGCC Steel and its condition (we usually see it supplied cold-rolled, HDG coated), the quantity, critical tolerances and any finish or certificate requirements.
SGCC Steel in Other Processes
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Send the drawing, the SGCC Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What is the typical lead time and minimum order for CNC Polishing SGCC Steel?
CNC Polishing prototypes for SGCC Steel can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Why is SGCC Steel a good choice for CNC Polishing?
SGCC Steel is strong, economical and widely available, which makes it well suited to CNC Polishing. We tune the process to the alloy so the finished SGCC Steel finishing part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Polishing SGCC Steel?
Achievable tolerances for SGCC Steel finishing depend on the alloy, geometry and feature size. We hold tight, repeatable tolerances appropriate to the feature and material. Exact figures are confirmed against your drawing callouts.
Can VT machining make custom SGCC Steel parts to my drawing?
Yes. SGCC Steel finishing is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
How clean are the edges produced by CNC Polishing on SGCC Steel?
Our deburring leaves SGCC Steel with a consistent, controlled edge break and burr-free surfaces.