Frequently asked questions
Is 310S bar available by rolled and forged routes?
Both routes can be reviewed. Published references include hot-rolled round bar at Φ20–Φ100 mm and forged round bar at Φ140–Φ240 mm, with broader special routes assessed separately.
Does the Φ12–Φ800 mm envelope mean every 310S diameter is readily available?
No. It describes a broader multi-route China special-metallurgy envelope. Exact 310S availability depends on the bar standard, diameter, condition, quantity, inspection and selected rolling or forging route.
What machining allowance should I request on 310S bar?
Send the finished drawing, starting diameter or section, surface route, datum, heat-treatment condition and required cleanup. The allowance is then reviewed against forging or rolling variation and the machining plan.
Which straightness and surface details belong in the RFQ?
Name the product or dimensional standard, bar length, straightness acceptance, diameter tolerance, rolled, peeled, turned or ground surface and any surface-defect or testing requirement.
What NDT can be requested for forged 310S bar?
UT, PT or other project-defined examination can be reviewed. State the method, test condition, coverage, acceptance class, sampling, reporting and whether inspection occurs before or after machining.