Treat colour and texture separately
PVD describes a coating process; hairline and mirror describe different surface appearances. An inquiry may combine a PVD colour with a specified underlying texture. State both so the supplier does not quote a different appearance under the same colour name.
Use a reference that can be checked
Digital images are useful for narrowing a direction but do not create a reliable final colour standard. Request a physical sample and record its reference. Keep the viewing conditions in mind when reviewing adjacent surfaces and reflective material.
Mark grain direction and visible faces
For directional surfaces, show the intended grain on the cutting or panel layout. Identify the primary viewing face, exposed returns and whether the reverse is visible. This is particularly useful when a screen or partition is viewed from both sides.
Discuss fabrication sequence
Tell the supplier whether sheets will be cut, bent, welded or assembled. Ask how the proposed sequence affects the final appearance and how visible surfaces will be protected. Agree any sample or prototype scope before authorising a full production quantity.
Include the underlying material requirements
A decorative finish should not replace the grade and exposure specification. State the intended environment and maintenance conditions. Material suitability needs consideration of the complete application rather than a simple indoor-versus-outdoor label.
Confirm acceptance and handling
Record the approved finish sample, quantities, panel layout and packing requirements. Ask the supplier to explain how pieces will be labelled and protected. Inspection should refer to the agreed sample and drawing rather than marketing photographs.