EN 10216-3 P275NL2 is a seamless steel pipe specifically designed for use in pressure vessels, boilers, and heat exchangers. It is a normalized fine grain steel with a minimum yield strength of 275 MPa (405,000 psi). The P275NL2 pipe is designed to operate at high temperatures, making it suitable for use in the oil and gas industry as well as power generation plants.
Steel Grade | Steel No. | C max. |
Si max. |
Mn |
P max. |
S max. |
Cr max. |
Mo max. |
Ni max. |
Al max. |
Cu max. |
N max. |
Nb max. |
Ti max. |
V max. |
Nb+Ti+V max. |
P275NL1 | 1.0488 | 0,16 | 0,40 | 0,50 to 1,50 |
0,025 | 0,02 | 0,30 | 0,08 | 0,50 | 0,02 | 0,30 | 0,02 | 0,05 | 0,04 | 0,05 | 0,05 |
P275NL2 | 1.1104 | 0,16 | 0,40 | 0,50 to 1,50 |
0,025 | 0,015 | 0,30 | 0,08 | 0,50 | 0,02 | 0,30 | 0,02 | 0,05 | 0,04 | 0,05 | 0,05 |
The material shall conform to the requirements as proscribed:
Mechanical properties in room temperature | |||||||||||||||
Pipe types |
Steel grades |
Thermal processing stage | Mechanical properties during tensile testing | ||||||||||||
Upper yield limit or yield strength Re or Rp0,2 min for wall thickness T in mm | Tensile strength Rm for wall thickness T in mm | Elongation A% min |
|||||||||||||
<\=12 | >12- <\=20 | >20- <\=40 | >40- <\=50 | >50- <\=65 | >65- <\=80 | >80- <\=100 | <\=20 | >20- <\=40 | >40- <\=65 | >65- <\=100 | |||||
MPa | MPa | 1 | t | ||||||||||||
Fine grain alloy steel pipes P275NL1, P275NL2 According to PN-EN 10216-3 |
P275NL1 | +N | 275 | 265 | 255 | 245 | 235 | 390- 530 | 390- 510 | 360- 480 | 24 | 22 | |||
P275NL2 | +N |
Outside diameter and wall thickness tolerances | |||||
Outside diameter D mm | Permissible deviations of outside diameter D | Permissible deviations of wall thickness t depending on the T/D ratio | |||
<\=0,025 | >0,025 <\=0,050 |
>0,050 <\=0,10 |
>0,10 | ||
D<\=219,1 | +\- 1% or =\- 0,5mm mm depending on which is greater | +\- 12,5% or 0,4 mm depending on which is greater | |||
D>219,1 | =\- 20% | =\- 15% | =\- 12,5% | =\- 10% |
Inside diameter and wall thickness tolerance | |||||
Permissible deviations of inside diameter | Permissible deviations of T for the given T/d ratio | ||||
d | dmin | <\-0,025 | >0,025 <\=0,050 |
>0,050 <\=0,10 |
>0,10 |
+\- 1% or +\- 2mm depending on which is greater | +2% +4mm 0 depending on which is greater |
+\-20% | +\-15% | +\-12,5% | +\-10% |
For the outside diameter of D>\=355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted |
Inspection and test type | Test frequency | Test category | ||
Mandatory tests | Ladle analysis | One per ladle | 1 | 2 |
Tensile testing in room temperature | One per every test pipe | X | X | |
Flattening test for D<600mm and the ratio of D<\=0,15 but T<\=40mm or ring testing for D>150mm and T <\=40mm | X | X | ||
Rolling test on a mandrel bar for D<\=150mm and T<\=10mm or ring testing for D<\=114,3mm and T <\=12,5mm | X | X | ||
Resilience testing at the temperature of 20 ºC | X | X | ||
Tightness testing | Every pipe | X | X | |
Dimensional testing | X | X | ||
Visual inspection | X | X | ||
NDT in order to identify longitudinal discontinuity | Every pipe | X | X | |
Material identification for alloy steel | X | X | ||
Optional tests | Final product analysis | One per ladle | X | X |
Tensile testing at elevated temperatures (NH, NL, QL grades) | One per ladle and for the same thermal processing conditions | X | X | |
Resilience testing at a temperature different than the standard test temperature | One per every test pipe | X | X | |
X | X | |||
Wall thickness measurement at a distance from pipe ends | X | X | ||
Non-destructive testing in order to identify transverse discontinuity | Every pipe | X | X | |
Non-destructive testing in order to identify delamination | X | X |
Inspection & Approval Certificates : EN10204 3.1 / DIN 50049 3.1 / isO 10474 3.1 Mill Test Certificate, NACE MR-0175 / isO 15156, NACE MR-01-03 / NACE MR-01-75 / isO 15156, CE Marked, European Pressure Equipment Directive PED-97/23/EC, AD-2000-W0, ASME Boiler & Pressure Vessel Code Sec.II Part A Ed. 2008, with 3.2 certificate duly Certified & Approved by LRS (Lloyd's Register), GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas), ABS (American Bureau of Shipping), SGS, TUV, RINA, IRS, NORSOK Approved Standard M-630, M-650 Rev.3
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EN 10216-3 P275NL2 Pipe is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.
EN 10216-3 P275NL2 Pipe packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.
Delivery: Within 10-25 days or asap if we have enough stock
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