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← Versie 16 sinds 2017-03-10 14:54:53 ⇥
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| Verwijderingen worden op deze manier gemarkeerd. | Toevoegingen worden op deze manier gemarkeerd. |
| Regel 1: | Regel 1: |
| STATUS: DRAFT This standard describes a universal way to describe a shape. = Intend = The intend is to offer a way to classify industry standard profiles, not limited to steel, based on shape only. The reasons for using this standard can be: * Shapes are described not depending on manufacturing characteristics such as "warm rolling". * Shapes are described not depending on function characteristics such as "beam". * The names are better suited for use in automation applications. * Naming is based on visible appearance like "Square" and "Rounded". * By prefixing the name with a standard institute and use a trailing general used profile designation, a global unique designation is created that is better understood. = Naming = The name is one or a combination of characters. * The first character is the main shape. Examples: "T-profile" and "Rectangular" * Subsequent characters are only designated if not corresponding to the expected default shape and or add extra shape complexity. This works like a sieve. The longer the code, the more complexity. == First character, main shape == The first character determines the basic shape. {{attachment:basic_profiles.svg|basic_profiles.svg|title=""}} The first row contains abbreviations: ||H ||Hexagonal || ||C ||Circular || ||S ||Square || ||R ||Rectangular || == Following characters, additional shape characteristics == The sieve consist of characteristics that are additional to the main shape. So what is standard, what is expected is not specified. Deviations are marked wit a character. From top to bottom: ||Standard, to be expected||Deviation||Char.||Examples||Remarks|| ||Solid||Hollow||H||CH, RH||CH is a pipe.|| ||1: Parallel thickness||Diverging thickness||D||ID, TD||This is typical for warm rolled and extruded products where internal radii change the thickness or when flanges end in a radius instead of ending straight.|| ||2: Parallel thickness||Flange is a slope||S||IDS, UDS||Also typical for some warm rolled products.|| ||Width does not equal height||Equal width and height and or equal legs||E||LE, TE, ZE||For Squares and Rectangles an E is not applicable. For Z-profiles only equality of legs is meant.|| ||No extra flanges||Extra flanges||F||UF|||| ||Sharp edges||Round edges||R||LR, UR||Typical products with one or more bending radii.|| The second row is more obvious, the letter represents the shape. O stands for omega. |
