Specifications
Chinese GB/T5310 Seamless steel tubes for high pressure boiler
Chinese GB/T5310 Seamless steel tubes for high pressure boiler
Application It is used for heating-pipelines,containers,coal-saving devices superheaters and reheaters of high pressure boilers (P>9.8Mpat;9.8Mpa, 450 <T< 650 )
Main steel pipe grade 20G 25MnG 15MoG 15CrMoG 12Cr2MoG 12Cr1MoVG Other grade is also negotiable.
Chemical Compositon & Mechanical Propertise
0.17~0.37
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Standard
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Grade
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Chemical Composition(%)
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C
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Mn
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Si
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V
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Cr
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Mo
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P.S
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GB5310
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20G
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0.17~0.24
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035~0.65
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0.17~0.37
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/
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/
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/
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≤ 0.030
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25MnG
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0.22~0.30
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0.70~1.00
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0.17~0.37
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/
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/
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/
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≤ 0.030
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15MoG
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0.12~0.20
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0.40~0.80
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0.17~0.37
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/
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/
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0.25~0.35
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≤ 0.030
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15CrMoG
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0.12~0.18
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0.40~0.70
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0.17~0.37
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/
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0.80~1.10
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0.40~0.55
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≤ 0.ter">≤ 0.030
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12Cr2MoG
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0.08~0.15
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0.40~0.70
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≤ 0.50
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/
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2.00~2.50
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0.90~1.20
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≤ 0.030
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12Cr1MoVG
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0.08~0.15
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0.40~0.70ot;c;p align=">0.40~0.70
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0.15~0.30
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0.90~1.20
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0.25~0.35
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≤ 0.030
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>
Mechanical Propertise
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Tensile Strength(Mpa)
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Yield Strength(Mpa)
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Elongation(%)
Elongation(%)&ation(%) Elongation(%)
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20G
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410~550
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≥ 245
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≥ 24
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25MnG
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≥ 415
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≥ 240
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≥ 22
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15MoG
|
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450~600
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≥ 270
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≥ 22
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15CrMoG
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440~640
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≥ 235
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≥ 21
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12Cr2MoG
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450~600
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≥ 280
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≥ 20
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12Cr1MoVG
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470~640
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≥ 255
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≥ 21
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