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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 shapes. <<TableOfContents()>> = 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 || The second row is more obvious, the letter represents the shape. O stands for omega. == 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. || |
