P265GH Superheater Tube
P265GH is a low alloy high temperature structural steel, material number 1.0425, implementing the German standard EN10028-2. It is a kind of European standard boiler vessel steel. The steel number G means other, H means high temperature, P means pressure element steel, 265 means the standard yield strength. Equivalent to 25MnG in China, it has good weldability. Used in the manufacture of boilers, pressure vessels and pipelines to transport hot liquids.
P265GH High-Pressure Boiler Tube Description
P265GH is an unalloyed steel with special high-temperature properties, good plasticity, toughness, cold bending, and welding properties. It is a steel for pressure purposes (weldable high-temperature properties of alloys and alloy steels) according to the German and European standard DIN EN 10216 and is used for the manufacture of pressure vessels, boilers, and heat exchangers, steam pipes, and pressure vessels.
Standards: EN10216-1, EN10216 -2
Diameter (OD): 21.3 mm-610.0 mm
Wall thickness (WT)：2.0 mm-60.0 mm
Length: 5.8-11.8m
Treatment condition：+N
P265 Seamless steel tubes for pressure purposes Chemistry Composition
| Material | No. | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Al |
| P265 TR1 | 1.0258 | 0.2 | 0.4 | 1.4 | ≤0.025 | ≤0.02 | 0.3 | 0.08 | 0.3 | 0.3 | / |
| P265 TR2 | 1.0259 | 0.2 | 0.4 | 1.4 | ≤0.025 | ≤0.015 | 0.3 | 0.08 | 0.3 | 0.3 | 0.02 |
| P265 GH | 1.0345 | 0.2 | 0.4 | 1.4 | ≤0.025 | ≤0.02 | 0.3 | 0.08 | 0.3 | 0.3 | 0.02 |
P265 alloy steel pipe Mechanical Properties
| Materials | Yield strength ReH b min. for Wall Thickness T mm, Mpa | Tensile Strength Rm | Elongation A min. % | ||
| T =16 | 16 < T =40 | 40 < T =60 | |||
| P265 TR1 | 265 | 255 | 245 | 410-570 | 21 |
| P265 TR2 | 265 | 255 | 245 | 410-570 | 21 |
| P265 GH | 265 | 255 | 245 | 410-570 | 21 |
Dimensions tolerances of P265GH Steel Pipe
Tolerances on outside diameter and wall thickness
| Outside Diameter D mm | Tolerances on D |
Tolerances on T for a T/D ratio | |||
| ≤ 0,025 | > 0,025 ≤ 0,050 |
> 0,050 ≤ 0,10 |
> 0,10 | ||
| D ≤ 219,1 | ± 1% or ± 0.5mm whichever is the greater |
± 12,5% or ± 0.4mm whichever is the greater | |||
| D > 219,1 | ± 20% | ± 15% | ± 12,5% | ± 10% a | |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
P265GH boiler tubes Tolerances on the inside diameter and wall thickness
| Tolerances on inside diameter | Tolerances on T for a T/d ratio | |||||
| d | d min | ≤ 0,03 | > 0,03 ≤ 0,06 |
> 0,06 ≤ 0,12 |
> 0,12 | |
| ± 1% or ± 2 mm whichever is the greater | (+ 2% ,0)or (+ 4 mm,0) | whichever is the greater | ± 20% | ± 15% | ± 12,5% | ± 10% a |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | ||||||
P265GH Seamless Steel Pipe Tolerances on outside diameter and minimum wall thickness
| Outside diameter D mm | Tolerances on D | Tolerances on T min for a T min /D ratio | |||
| ≤ 0,02 | > 0,02 ≤ 0,04 |
> 0,04 ≤ 0,09 |
> 0,09 | ||
| D ≤ 219,1 | ± 1% or ± 0.5mm whichever is the greater |
(+ 28%,0) or (+ 0.8 mm,0) whichever is the greater | |||
| D > 219,1 | + 50% 0 |
+ 35% 0 |
+ 28% 0 |
+ 22% a 0 |
|
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
GNEE Supply P265GH Superheater Pipe
About Us
GNEE Group is a famous steel pipe supplier in China, with more than 16 years of supply experience, specializing in supplying high-temperature and high-pressure boiler pipe, low-pressure boiler pipe, alloy pipe, spiral welded pipe, and so on. We have obtained ISO, SGS, CE, and other organizations' qualification certificates, and our products are manufactured and tested in strict accordance with national standards, and we support third-party testing. We have a large number of stock in stock, within 3 days of day delivery, welcome you to contact us at any time.
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