GB 5310 20MnG High Pressure Boiler Tubes Quick Details Seamless steel tubes and pipes for high pressure boiler -Manufacturing methods Chemical Compositions(%) of GB 5310-2008 Mechanical Properties of GB5310-2008：
SHANDONG S-SAILING CHEMICAL CO,LTD , https://www.sdqh-chem.com
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Standard:GB 5310
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.8 mm——150 mm.
Outer diameter (OD): 23 mm——1500 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
GB 5310 standard is applicable to steam boilers and pipeline seamless pipes for the manufacture of high pressure and above.
GB 5310 20MnG Seamless steel tubes and pipes for high pressure boiler
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(1)Steel smelting method
GB 5310 20MnG steel will be smelted by electric furnace plus furnace refining, oxygen converter plus furnace refining or electroslag remelting method.
(2)Manufacturing methods and requirements for tube blanks
The tube blank can be produced by continuous casting, die casting or hot rolling (forging).
(3)Manufacturing method of steel tube
GB 5310 20MnG Steel tubes shall be manufactured by hot rolling (extrusion, expansion) or cold drawing (rolling).
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Classification, code
a) Hot rolled steel pipe, codenamed WH;
b) Cold drawn steel pipe, codenamed WC.
Steel grade
C
Si
Mn
P
S
Cr
Mo
Cu
Ni
V
20G
0.17-0.24
0.17-0.37
0.35-0.65
≤0.030
≤0.030
≤0.25
≤0.15
≤0.20
≤0.25
≤0.08
20MnG
0.17-0.24
0.17-0.37
0.70-1.00
≤0.030
≤0.030
≤0.25
≤0.15
≤0.20
≤0.25
≤0.08
25MnG
0.18-0.24
0.17-0.37
0.80-1.10
≤0.030
≤0.030
≤0.25
≤0.15
≤0.20
≤0.25
≤0.08
15CrMo
0.12-0.18
0.17-0.37
0.40-0.70
≤0.030
≤0.030
0.80-1.10
0.40-0.55
≤0.20
≤0.30
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12Cr2MoG
0.08-0.15
≤0.50
0.40-0.70
≤0.030
≤0.030
2.00-2.50
0.90-1.20
≤0.20
≤0.30
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12Cr1MoV
0.08-0.15
0.17-0.37
0.40-0.70
≤0.030
≤0.030
0.90-1.20
0.25-0.35
≤0.20
≤0.30
0.15-0.30
12Cr2MoWVTiB
0.08-0.15
0.45-0.75
0.45-0.65
≤0.030
≤0.030
1.60-2.10
0.50-0.65
≤0.20
≤0.30
0.28-0.42
10Cr9Mo1VNb
0.08-0.12
0.20-0.50
0.30-0.60
≤0.020
≤0.010
8.00-9.50
0.85-1.05
≤0.20
≤0.40
0.18-0.25
Steel Grade
Yield Strength (Mpa)
Tensile Strength (Mpa)
Elongation (%)
20G
410-550
245
24
20MnG
≥415
240
22
25MnG
≥485
275
20
15MoG
450-600
270
22
12CrMoG
410-560
205
21
12Cr2MoG
450-600
280
20
12Cr1MoVG
470-640
255
21
12Cr2MoWVTib
540-735
345
18
10Cr9Mo1VNb
≥585
≥415
≥20
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GB 5310 20MnG High Pressure Boiler Tubes Quick Details
Shandong S-Sailing Chemical Co. Ltd. is located in Dongying, a beautiful oriental pearl city in the Yellow River Delta. Founded in 2012 with a registered capital of 30 million Yuan, the company has a total asset of 120 million Yuan and 60 staffs. It is a
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