Define the equipment
Record design pressure, design temperature, minimum design metal temperature, service medium and governing code. Material approval may depend on elevated-temperature properties, toughness, heat treatment and supplementary examination.
Read grade and condition together
P235GH, P265GH, P295GH and P355GH belong to an EN pressure-purpose family; P275NH and P275NL variants have different requirements. ASTM A516, A537 and A724 must be checked under their own adopted specifications. Similar handbook chemistry is not code authorization.
Fabrication release
Review the plate certificate, thickness scope, forming and post-weld treatment plan. If a pressure part is to be classed, coordinate the equipment and material approval requirements. Do not copy hull-steel thickness tolerances or welding temperatures into a pressure-vessel specification.
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 a hull steel certificate serve as a vessel material certificate?
Only if the applicable equipment code and approving authority explicitly accept the material and documentation.
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.