S195T

The chemical composition of EN 10255 S195T has a considerable impact on its mechanical properties. Among all the elements of S195T. Carbon is a toughening element. Silicon contributes to strength. Manganese is essential austenite stabilizing element that contributes to texture structure creation and increases firmness, strength, and wear resistance. Phosphorus reduces plasticity and toughness, as well as the appearance of cold brittleness. Meanwhile, it may considerably raise the strength of steel and improve the stability of atmospheric corrosion. Sulfur increases the hot brittleness of steel.

There is a wide range of steel tube dimensions and weight by the European standard EN 10255 “Non-Alloy Steel Tubes Suitable for Welding and Threading” and British Standard BS 1387:1985 “Specification for screwed and socketed steel tubes and tubular, and for plain end steel tubes suitable for welding or screwing to BS 21 pipe threads”. This table allows easy comparison between different types of steel tubes to choose the most suitable one for a particular application. The table shows that the weight of steel tubes can vary significantly, from less than 1 kg/m to more than 30 kg/m. The diameter of the tube also has a significant impact on the weight, with larger diameters generally being thicker and therefore heavier. The table also shows that there are different types of steel tubes available with different thicknesses, which can be selected to suit the required application.

- Type L - Dimension Tolerance and Unit Mass

- Type L1 - Dimension Tolerance and Unit Mass

- Type L2 - Dimension Tolerance and Unit Mass

- Wall Thickness

  • ±10%. for M and H series & Type L;

- Weight

- Straightness

The markings should be placed at least once within one meter of one end of the tube, and the tubes shall be marked with the following information by suitable and durable methods:

  • The name or trademark of the manufacturer;
  • The serious symbol (H or M) and the type (L, L1, or L2);
  • The symbol of the manufacturing process (S or W)

Colors can be a helpful way to organize and identify different objects, and this is especially true when it comes to tubes. Tubes are often used in a variety of settings, from construction sites to laboratories, and they come in a wide range of sizes and materials. While each type of tube has its unique properties, they all need to be marked so that they can be easily identified. The manufacturer may opt to use color coding instead of series or type markings. This will make it easy to quickly identify the different types of tubes, saving time and preventing confusion. By using colors to mark tubes, manufacturers can help to ensure that they are used safely and correctly.

Heavy	Medium	Types
Red	Blue	See Tolerance Table

The following information shall appear on the label of each bundle:

  • The name or trademark of the manufacturer;
  • The standard code EN 10255;
  • The symbol of the manufacturing process (S or W)
  • The D (outside diameter) or R (thread size);
  • The series or type or specified wall thickness.

The surface finish of a tube plays an important role in determining its quality. For this reason, manufacturers must take care to ensure that their products are free from defects that can be detected by visual examination. The internal and external surfaces of the tube must be smooth, with no imperfections or marks that would require dressing. Any surface imperfections that encroach on the specified minimum wall thickness are considered defects. It is permissible to dress surface imperfections by grinding or machining provided that the wall thickness in the dressed area is not less than the specified minimum. All dressed areas must blend smoothly into the contour of the tube. By paying close attention to these details, manufacturers can produce high-quality tubes that meet the needs of their customers.