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DIN EN 10253 specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of carbon and alloy steel which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases.
- type A : Butt-welding fittings with reduced pressure factor
- type B : Butt-welding fittings for use at full service pressure
P265GH is a low alloy high temperature structural steel, in accordance with the European standard EN10253-2. It is a kind of European standard boiler vessel plate.
In P265GH steel grade, G stands for others, H stands for high temperature, P stands for steel for pressure bearing components, and 265 stands for standard yield strength. It is equivalent to 25MnG in China. 25MnG is GB 5310-2008 high pressure boiler material, the performance and material of both are roughly the same. P265GH has good plasticity, toughness, cold bending and weldability, and is often used in nuclear power plant, boiler manufacturing, pressure vessel and pipeline transportation of hot liquid.
P265GH Chemical composition:
C | Si | Mn | p | S | Cr | Cu |
<=0.20 | <=0.40 | <=0.80-1.40 | <=0.025 | <=0.010 | <=0.30 | <=0.30 |
Mo | Nb | Ni | Ti | V | N | Alt |
<=0.08 | <=0.020 | <=0.30 | <=0.03 | <=0.02 | <=0.012 | <=0.020 |
P265GH Mechanical properties:
Thickness | Y.S | T.S | E% | impulse test -20ºC | impulse test 0ºC | impulse test +20ºC |
t<=16 | 265 | 410-530 | 22 | 27 | 34 | 40 |
16 | 255 | 410-530 | ||||
40 | 245 | 410-530 | ||||
60 | 215 | 410-530 | ||||
100 | 200 | 400-530 | ||||
150 | 185 | 390-530 |
Fitting type | Elbow 45deg, 90deg, 180deg, 2D, 3D, 5D |
Tee, reducing tee, equal tee, cross | |
Reducer eccentric, concentric | |
Cap | |
Wall thickness | 2mm to 60mm |
Outside Diameter size | 17.2mm to 610mm for seamless type |
60mm to 1500mm for welded type | |
Antirust coating | Rust-proof oil, hot dip galvanized, electric galvanized, |
Weld end type | plaine end, bevel end, shinning bevel after sandblasting |
Packing | carton box for szie up to 60mm, seaworthy plwood case or pallet for big size |