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■ Overview
Varies sizes stock of GB/T5310 specifications grade 25mng seamless steel pipes,25mng seamless steel tubes,25mng boiler steel pipes,25mng boiler steel tubes in xinsteel's warehouses ready for shipment.In chinese specificaiton GB/T 5310,there are all seamless type pipes and tubes grades for high pressure boiler using as carbon structural steels 20g,20Mng,25Mng and alloy steels 15MoG,20MoG,12CrMoG,15CrMoG,12Cr2MoG,12Cr1MoVG,12Cr2MoWVTiB,07Cr2MoW2VNbB,
12Cr3MoVSiTiB,15Ni1MnMoNbCu,10Cr9Mo1VNbN,10Cr11MoW2VNbCu1BN,11Cr9Mo1W1VNbBN.
12Cr3MoVSiTiB,15Ni1MnMoNbCu,10Cr9Mo1VNbN,10Cr11MoW2VNbCu1BN,11Cr9Mo1W1VNbBN.
■ Full Data
Technical Requirements & Additional Services:
♦ Normalized Heat treatment at Temp.880-940 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Normalized Heat treatment at Temp.880-940 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Expansion test comply to GB/T 242
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
■ Techicals
►Mechnical property for 25Mng boiler steel pipes:
|
25MnG |
|
|
Yield strength (≥Mpa) |
275 |
|
Tensile strength (≥Mpa) |
485-640 |
►Chemical composition for 25Mng boiler steel pipes (Heat Analysis Max%)
|
Main chemical elements composition of 25MnG |
|||||
|
C |
Si |
Mn |
P |
S |
Cr |
|
0.22-0.27 |
0.17-0.37 |
0.70-1.00 |
0.025 |
0.015 |
0.25 |
|
Cu |
Ni |
Mo |
V |
Ti |
Zr |
|
0.20 |
0.25 |
0.15 |
0.08 |
- |
- |
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