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- Weld Seam
The weld area of an EN 10217-1 pipe must be free of cracks, lack fusion, and lack of penetration. If there are any issues with the weld area, the entire pipe must be scrapped. Repairs to the weld seam of EW and HFW tubes are not permitted. However, repairs to the weld seam of SAW tubes may be allowed if done by an agreed documented procedure. This is to ensure that the final product is up to par and will not cause any issues down the line. Quality control is essential when it comes to welding, and this standard ensures that only the best products are being put out on the market.
- Tube Surface
As specified in EN 10217-1, the surface of pipes must be free from any defects that can be detected by visual examination. This includes surface imperfections that require dressing, such as grinding or machining. However, it is permissible to dress these areas provided that the wall thickness in the dressed area is not less than the specified minimum wall thickness. All dressed areas must blend smoothly into the contour of the tube. Any surface imperfection that is deeper than 5% of the wall thickness or 3mm, whichever is smaller, must be dressed.
| Steel Grade |
Yield Strength ReH
for T wall thickness in mm (Mpa)
|
Tensile
strength Rm
|
Elongation at breakage A % min. | ||
| T ≤16 | 16<T≤ .40 | (Mpa) | Longitudinal | Transversal | |
| P195TR1 | 195 | 185 | 320-440 | 27 | 25 |
| Steel Grade | Chemical Composition in % in mass. | ||||
| Max C % | Max Si % | Max Mn % | Max P % | Max S % | |
| P195TR1 | 0,130 | 0,350 | 0,700 | 0,025 | 0,020 |
| 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 |
