DIN 1629
DIN 1629 Seamless Steel pipe Of Non Alloys Steels are made of unalloyed steels, it's main grades are St 37.0, St44.0, St52.0.
Learn about DIN 2458 Tubo Preto, black steel pipes made from carbon steel, known for their strength and durability. Discover their key features, specifications, and applications in construction, water transport, and mechanical systems.
DIN 2458 Tubo Preto refers to black steel pipes manufactured according to the DIN 2458 standard. These pipes are commonly used in various structural and industrial applications, including construction, water transport, and mechanical systems.
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DIN 2458 Standard is applicable to the dimensions and conventional masses per unit length of welded steel pipes, in accordance with the technical conditions of delivery as stipulated in DIN 1628 Parts 1 to 4, DIN 17172 and DIN 17177. Furthermore, St37.2 welded pipe is also applicable to other technical conditions of delivery in which reference to DIN 2458 Standard is made.
It defines the sector, selected from DIN ISO 4200, within which welded steel pipes are standardised.Please note that it does not apply to precision steel tubes according to DIN 2393 and DIN 2394.
| Steel Grade | Material Number | Type of Deoxidation | C (max) | Si (max) | N | P (max) | S (max) | Addition of Nitrogen Fixing Elements |
|---|---|---|---|---|---|---|---|---|
| St 37.2 | 1.0037 | RR | 0.17 | -- | 0.009 | 0.050 | 0.050 | -- |
| Steel Grade | Material Number | Up to 16 (N/mm2 min) | 16 - 40 (N/mm2 min) | 40 - 65 (N/mm2 min) | Tensile (N/mm2) | Elongation after A5 (Longitudinal) (% min) | Elongation after A5 (Transverse) (% min) | Impact ISO V-notch test pieces at +20°C (Longitudinal) (/ min) | Impact ISO V-notch test pieces at +20°C (Transverse) (/ min) |
|---|---|---|---|---|---|---|---|---|---|
| St 37.2 | 1.0037 | 235 | 225 | 215 | 340 to 510 | 17 - 26 | --- | 27 | -- |
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