Sheet metal thickness and RAL colour codes: how to read '040 7024'
TunkaForm team · · 4 min read
Short answer
In Uzbekistan's sheet metal market, materials are labelled like '040 7024': the first 3 digits are the thickness (040 = 0.40 mm), the next 4 digits are the RAL colour code (7024 = graphite grey, known locally as “mokriy asfalt”, wet asphalt). For example, '035 9003' is white sheet metal 0.35 mm thick.
Code structure
{thickness} {RAL code} - e.g. 040 7024
- Thickness is written in hundredths of a millimetre: 035 = 0.35 mm, 040 = 0.40 mm, 045 = 0.45 mm, 050 = 0.50 mm.
- RAL is a colour standard; the 4-digit number identifies an exact colour (for example, 9003 is white).
- Sometimes a note is added at the end: '035 9003 OQ' (OQ means white).
The most common RAL colours on the market
| RAL code | Official name | Local market name |
|---|---|---|
| RAL 9003 | Signal white | Oq (white) |
| RAL 7024 | Graphite grey | Mokriy (wet asphalt) |
| RAL 1015 | Light ivory | Maloshniy (milky) |
| RAL 8017 | Chocolate brown | Shikalad (chocolate) |
| RAL 3005 | Wine red | Vishnya (cherry, dark red) |
| RAL 6005 | Moss green | Dark green |
| RAL 5005 | Signal blue | Blue |
How does thickness affect price and strength?
Thicker sheet metal is stiffer and more durable, but the price per m² is also higher. Sheets of 0.40 mm and 0.50 mm in the same RAL colour must be tracked as separate products in inventory - otherwise stock balances and prices will be wrong.
Working with codes in inventory
Naming items by code keeps inventory organised: '040 7024' and '045 7024' never get mixed up. TunkaForm reads this code automatically - when an order is placed, it deducts metal of the required thickness and colour for the flashing from inventory by itself.
Questions
- What does '040 7024' mean?
- Sheet metal 0.40 mm thick in RAL 7024 colour (graphite grey, known locally as “mokriy asfalt”, wet asphalt).
- What colour is RAL 9003?
- RAL 9003 is Signal white, i.e. white. On the market it is simply called “white sheet metal”.