Coated steel buying guide

Profiled Steel Sheet RFQ: Drawing to Receipt

Turn a profile drawing into effective cover width, finished quantity, color and receipt criteria.

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01

Provide the profile drawing

Send the full profile drawing, not only a trade name such as corrugated sheet. The drawing should define pitch, depth, crest and valley geometry, lap direction and the formed edge. Ask the supplier to mark which drawing revision it can manufacture through its partner route. A similar-looking profile may not fit an existing overlap or fixing pattern.

02

Confirm effective cover width

Distinguish overall sheet width, feed width and effective cover width after side laps. Ask the supplier to annotate the proposed finished drawing with the width that will actually cover the roof or wall. A catalogue wave name or nominal width is not proof that adjacent sheets will fit your fixing and overlap pattern.

  • Profile pitch/depth

    State the required profile pitch/depth and how it will be verified for this order.

  • Overall versus effective width

    State the required overall versus effective width and how it will be verified for this order.

  • Length

    State the required length and how it will be verified for this order.

  • Lap direction

    State the required lap direction and how it will be verified for this order.

03

Calculate ordered piece schedule

Use the approved effective width and required run length to prepare a piece schedule by finished length. Include lap direction, cut sequence, quantity by bundle and any special edge or opening details. A coil-tonnage estimate is not a replacement for a panel count, especially when the project has multiple lengths or visible elevations.

  • Lap directionState the required lap direction and how it will be verified for this order.
  • Painted faceState the required painted face and how it will be verified for this order.
  • Stack and markingState the required stack and marking and how it will be verified for this order.
04 · Agree coating and visible

Agree coating and visible face

Specify PPGI or PPGL substrate, metallic coating and paint system separately. Identify the weather-facing side, physical color reference or controlled sample, and any protective film. If the panel is formed from coated feedstock, request confirmation that the proposed combination is suitable for the agreed profile and test basis. A roof-system wind or water-tightness guarantee is not established by the material enquiry.

05

Check bundle and receipt

Agree how long sheets are stacked and protected, how bundles are marked, and how visible damage is recorded at delivery. A parent-coil certificate does not prove finished profile, length, count or condition. At receipt, compare the drawing revision, effective cover width, paint face and piece schedule before installation; keep photos and labels if anything differs. ZIVO checks the profiled-sheet route with a partner supplier order by order.

  1. Send the order basis

    Include use, drawing, form and material system.

  2. Confirm the offer

    Check each proposed difference, test and delivery term.

  3. Keep the receipt record

    Match labels, documents and visible condition to the agreed order.

Sources

  1. ASTM A755/A755M-18(2024): prepainted metallic-coated building sheetASTM International · Accessed 2026-09-30
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