Receiving inspection
Check plate identity, dimensions, edge damage, scale, pitting and visible discontinuities. Record defect location, length, depth and photographs. Remove only enough scale to inspect without concealing the original condition or reducing thickness below the limit.
Internal quality
Ultrasonic testing can assess internal discontinuities but requires an agreed standard, coverage, sensitivity and acceptance level. A visual pass cannot exclude lamination. A routine mill certificate does not necessarily mean every plate has been ultrasonically examined.
Repair decisions
Grinding or weld repair must comply with the applicable rule and approval process. Recheck remaining thickness and repaired areas. Traceable nonconformance records should show the original indication, disposition, repair procedure and final inspection.
Information to record
- Exact product standard and edition; approved drawing or specification revision.
- Grade, dimensions, final condition and heat-to-piece traceability.
- Acceptance test, inspection document and responsible approving party.
Frequently asked questions
Can all visible defects be ground out?
No. Defect type, depth, remaining thickness and applicable acceptance limits determine whether grinding is permitted.
Sources and reference scope
- Procurement and editorial guidance — Cross-checked against product terminology and the cited material rules
Guidance describes checks to request. It is not a claim of available stock, certificates or completed project engineering. - 钢材产品简介 — Slides 3, 5–6, 15–19
Product forms, units and grade vocabulary; not proof of current stock or class certification.