BS EN 10208-1/2 is a specification for pipelines designed for flammable liquid transfer on land. The material is extremely heat resistant, durable, and HIC resistant. The oil and gas sectors primarily use the BS EN 10208-2 to carry crude oil and other flammable liquids. There are several categories and dimensions as well as varying quality levels in the material. There are both cold drawn steel pipes and hot rolled seamless steel pipes in accordance with EN 10208-2. While seamless pipes are cold drawn from ingots of the same material grade, hot rolled pipes are rolled from sheets or plates of the same material grade. The diameters of EN 10208 steel pipes range from 21.3 mm to 660 mm, and wall thicknesses can reach 40 mm with seamless pipes measuring between 10.2 mm and 108 mm. The EN 10208-2 Seamless Pipes may be readily and effectively installed, have excellent dimension accuracy, and can be utilised for more accurate applications. In delicate applications like gas transmission lines, seamless pipes are therefore chosen. Carbon, manganese, phosphorus, sulphur, and silicon make up the composition of the pipes. The unique mechanical qualities of EN 10208-2 Steel Pipes are a result of this composition and the formation processes. With the majority of conventional techniques, welding these pipes is more simpler. Both preheating and post-weld heat treatment are not necessary.
EN 10208-2 Seamless Pipes
UNI EN 10208-2 Material
BS EN 10208 Pipe
application: | distribution of combustible media with determined pressure (previously DIN 17172) | |||||||||||||||||||||
production method: | – seamless: S – seamed: HFW high frequency welding SAW powder welding COW combined welding Fusion welds of strip joining for spiral pipes are acceptable after agreement |
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grade: seamed and seamless: |
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grade: seamless: |
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grade: seamless: |
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outer diameter: | Ø 33,7 up to 1.626 mm (seamless up to 660 mm) | |||||||||||||||||||||
wall thickness: | up to 40 mm | |||||||||||||||||||||
pipes type and production running: | see UNI 10208-2 Table 2 | |||||||||||||||||||||
diameter and ovality tolerance: | see DIN 10208-2 Table 9 | |||||||||||||||||||||
wall thickness tolerance: | see EN 10208-2 Table 10 | |||||||||||||||||||||
max. value of fusion weld excedance: | see 10208-2 Table 15 | |||||||||||||||||||||
straightness: | 0,2 % along whole length, locally < 4 mm/m | |||||||||||||||||||||
PE coating: | EN 10285 or 10287 in 3-layer extrusion moulding or surfacing by welding method |
En 10208-2 Steel Pipes
EN 10208-2 L 450MB steel Pipes
EN 10208 carbon steel pipes
L245NB 10208-2 SSAW Pipes 1016mm x 12.5mm PE
10208-2 L 245MB steel pipes
EN 10208-2 L245MB seamless steel pipes
En 10208-2 Steel Tubes
UNI 10208-2 Hot Rolled Seamless steel pipes
Number No. | Grade | Grade | Yield point |
Tensile strength |
Ultimate longitudinal |
Impact strength | Carbon |
---|---|---|---|---|---|---|---|
elongation | at bending | equivalent | |||||
EN10208-2 Hot Rolled Seamless Tube | |||||||
1.0457 | L 245 NB | StE 240.7 | 245-440 | 415 | 22 | 40 | 0,42 |
1.0484 | L 290 NB | StE 290.7 | 290-440 | 415 | 21 | 40 | 0,42 |
1.0582 | L 360 NB | StE 360.7 | 360-510 | 460 | 20 | 40 | 0,45 |
1.8972 | L 415 NB | StE 415.7 | 415-565 | 520 | 18 | 40 | w/uzg |
1.8948 | L 360 QB | 360-510 | 460 | 20 | 40 | 0,42 | |
1.8947 | L 415 QB | 415-565 | 520 | 18 | 40 | 0,43 | |
1.8952 | L 450 QB | 450-570 | 535 | 18 | 40 | 0,45 | |
1.8955 | L 485 QB | 485-605 | 570 | 18 | 46 | 0,45 | |
1.8957 | L 555 QB | 555-675 | 625 | 18 | 61 | w/uzg | |
1.0418 | L 245 MB | – | 245-440 | 415 | 22 | 40 | 0,4 |
1.0429 | L 290 MB | StE290.7 TM | 290-440 | 415 | 21 | 40 | 0,4 |
1.0578 | L 360 MB | StE360.7 TM | 360-510 | 460 | 20 | 40 | 0,41 |
1.8973 | L 415 MB | StE415.7 TM | 415-565 | 520 | 18 | 40 | 0,42 |
1.8975 | L 450 MB | StE445.7 TM | 450-570 | 535 | 18 | 40 | 0,43 |
1.8977 | L 485 MB | StE480.7 TM | 485-605 | 570 | 18 | 46 | 0,43 |
1.8978 | L 555 MB | 555-675 | 625 | 18 | 61 | w/uzg |
Steel designation | Pipes body (seamless pipes and welded pipes) | Spiral weld | Whole pipes | ||||
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HFW, SAW, COW | SAW, COW | ||||||
Steel symbol | Plastic limit R 10,5N/mm 2 | Tensile strength R mN/mm 2min. | R10,5/RmMax | Elongation A% min. | Tensile strength R mN/mm 2min | Diameter of the bending mandrel bar in the bending test | Pressure water test |
L245NB L245MB |
245 to 440 | 415 | 0,80 0,85 |
22 | The same values as for the pipes body apply | 3T | Every pipes should be subject to the test and it should be free of any leaks or deformations |
L290NB L290MB |
290 to 440 | 415 | 0,85 0,85 |
21 | 3T | ||
L360NB L360QB L360MB |
360 to 510 | 460 | 0,85 0,88 0,85 |
20 | 4T | ||
L415NB L415QB L415MB |
415 to 565 | 520 | 0,85 0,88 0,85 |
18 | 5T | ||
L450QB L450MB |
450 to 570 | 535 | 0,90 0,87 |
18 | 6T | ||
L485QB L485MB |
485 to 605 | 570 | 0,90 0,90 |
18 | 6T | ||
L555QB L555MB |
555 to 675 | 625 | 0,90 0,90 |
18 | 6T |
Coefficient of thermal expansion | 1.08E-5 1/K at -100 °C |
Density | 7.85 g/cm³ at 20 °C |
Elastic modulus | 217 GPa at -100 °C |
Grade | Permissible yield point ratio | Yield Strength MPa(min) | Tensile Strength MPa | Elongation % (min) |
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L245NB | ≤ 0.85 | 240 | 370 - 490 | 24 |