Knowledge: experience, written down
Steel trading runs on experience. A missed UT class in the contract becomes an argument at delivery; a skipped preheat becomes a crack in the weld. These articles lay out the ordering sense, fabrication craft and warehouse habits we have accumulated over twenty years — may they save you a pit or two.
Ordering Q345R vessel plate: UT, heat treatment, mill certs
Vessel-plate contracts leave no room for vagueness — UT class, delivery condition and performance guarantee, sorted once and for all.
09MnNiDR low-temperature plate for -70°C service
Why nickel-bearing steel survives deep cold, and how to set impact temperature, UT and Z grades in the order.
Choosing NM400 wear plate: hardness, thickness, economics
The NM ladder is not a beauty contest, and MN13 is not a universal grade — match the plate to the wear mode.
Q690D high-strength plate: welding and carbon equivalent
Preheat, heat input and consumable selection that keep cracks out of Q+T steel.
Plate cutting from drawing to shaped parts
Flame, plasma or laser? How bevels are cut? Where nesting saves money? The profiling guide.
EN 10028 and SA516 quick reference
P355GH, P355NL2, SA516 Gr.70 — which Chinese grades do they mirror? One table to untangle export selection.
Storing steel plate: warehouse practice
Dunnage, bay layout, rust control — twenty years of warehouse habits in plain words.
Export documents and standard cross-reference
Mill certificates, class documents, fumigation marks — the export paperwork chain and the usual snag points.
常见问答
May I republish these articles?
Yes — please credit the source. Content is revised when standards change.
I have a specific technical question.
Send the service conditions (medium, temperature, loading), the drawing or the grade; first-line ordering experience is yours for the asking.
Further reading
A few related pieces worth a look: