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- Weld Seam
EN 10217-1 pipe is made from different materials, each with different welding requirements. The most common are ferritic and austenitic steels, which have to be welded with care to avoid cracking, lack of fusion, and lack of penetration. Repairs to the weld seam of EW and HFW tubes are not permitted. Repairs to the weld seam of SAW tubes may be allowed if done by an agreed documented procedure.
- Tube Surface
The EN 10217-1 pipe must have a surface that is free of any defects that can be seen with the naked eye. If there are any surface imperfections that require dressing, they shall be limited to grinding or machining. The wall thickness in the dressed area must not be less than the specified minimum wall thickness. All dressed areas shall blend smoothly into the contour of the tube. Any surface imperfection that is deeper than 5% of the wall thickness T or 3mm, whichever is smaller, shall be dressed.
| Steel Grade |
Yield Strength Reh
for T wall thickness in mm (Mpa)
|
Tensile
strength Rm
(Mpa)
|
Elongation at breakage A % min. | ||
| T ≤16 | 16<T≤ .40 | Longitudinal | Transversal | ||
| P195TR2 | 195 | 185 | 320-440 | 27 | 25 |
| Steel Grade | Chemical Composition in % in mass. | ||||
| Max C % | Max Si % | Max Mn % | Max P % | Max S % | |
| P195TR2 | 0,130 | 0,350 | 0,700 | 0,025 | 0,020 |
| Number of Tubes per Test Unit | |
| Outside diameter (mm) | Maximum number of tubes per test unit |
| D | Quality TR1 |
| D≤114.3 | 200 |
| 114.3＜D≤323.9 | 100 |
| 323.9＜D≤660 | 50 |
| D＞660 | 50 |
| NPS |
Outside Diameter
(mm)
|
Wall Thickness
(mm)
|
Tolerances on the outside
diameter (mm)
|
Mass per unit of length (Kg/m) | |
| Max. | Min. | ||||
| 1” | 33,7 | 2,30 | 34,0 | 33,4 | 1.78 |
| 1.25” | 42,4 | 2,30 | 42,7 | 42,1 | 2,27 |
| 1.5” | 48,3 | 2,30 | 48,6 | 48,0 | 2,61 |
| 2” | 60,3 | 2,30 | 60,6 | 60,0 | 3.29 |
| 2.5” | 76,1 | 2.60 | 76,4 | 75,8 | 4.71 |
| 3” | 88,9 | 2.90 | 89,2 | 88,6 | 6,15 |
| 4” | 114,3 | 3,20 | 114,6 | 114,0 | 8.77 |
| 5” | 139,7 | 3.60 | 140,0 | 139,4 | 12.1 |
| 6” | 168,1 | 4,00 | 168,7 | 167,9 | 16.21 |
| 8” | 219,1 | 5,00 | 219,5 | 218,7 | 26.4 |
| 10’ | 273.1 | 5.00 | 275.15 | 271.05 | 33.1 |
| 12’ | 323.9 | 5.60 | 326.33 | 321.47 | 43.97 |
| NPS |
Outside
Diameter (mm)
|
Minimum Wall
Thickness (mm) with Standard
Tolerance
|
Tolerances on the outside diameter (mm) | Mass per unit of length (Kg/m) | |
| Max. | Min. | ||||
| 1” | 33,7 | 2,60 | 34,0 | 33,4 | 1,99 |
| 1.25” | 42,4 | 2,60 | 42,7 | 42,1 | 2,55 |
| 1.5” | 48,3 | 2,60 | 48,6 | 48,0 | 2,93 |
| 2” | 60,3 | 2,60 | 60,6 | 60,0 | 3,70 |
| 2.5” | 76,1 | 2.6 | 76,4 | 75,8 | 4.71 |
| 3” | 88,9 | 2.9 | 89,2 | 88,6 | 6,15 |
| 4” | 114,3 | 3,20 | 114,6 | 114,0 | 8.77 |
| 5” | 139,7 | 3.6 | 140,0 | 139,4 | 12.1 |
| 6” | 168,1 | 4,00 | 168,7 | 167,9 | 16.21 |
| 8” | 219,1 | 4,50 | 219,5 | 218,7 | 23,82 |
| 10’ | 273.1 | 5 | 275.15 | 271.05 | 33.1 |
| 12’ | 323.9 | 5.6 | 326.33 | 321.47 | 43.97 |
| Length L (mm) | Tolerance (mm) for outside diameter <406,4 mm |
| L < 6000 | 0/+10 |
| 6000 < L < 12000 | 0/+15 |
