











C'est pour réduire la perte de chaleur dans le condenseur causée par l'élimination de l'eau de refroidissement, la perte est réduite en chauffant l'eau.
Après la pompe d'alimentation haute pression, des réchauffeurs haute pression sont ajoutés pour augmenter la température de l'eau d'alimentation de la chaudière et économiser les ressources en charbon.
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ASTM A179 |
It is used for heat exchanger, condenser and similar heat conveying equipments |
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ASTM A213 |
It is used for boiler and super heater min wall thickness seamless steel ferrite and austenitic steel tube and heat exchanger austenitic steel tube. |
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ASTM A210 |
It is used for boiler and boiler flue tubes, including safe end, vault and supporting tube, and superheater wall thickness min or medium carbon steel tube. |
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JIS G3461/2 |
It is used for boiler and heat exchanger tube inside&outside. |
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Standard |
Grade |
Chemical composition(%) |
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C |
Si |
Mn |
P |
S |
Cr |
Mo |
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ASTM A179 |
A179 |
0.06-0.18 |
- |
0.27-0.63 |
≤0.035 |
≤0.035 |
- |
- |
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ASTM A213 |
T11 |
0.05-0.15 |
0.50-1.00 |
0.30-0.60 |
≤0.025 |
≤0.025 |
1.00-1.50 |
0.44-0.65 |
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T12 |
0.05-0.15 |
≤0.50 |
0.30-0.61 |
≤0.025 |
≤0.025 |
0.80-1.25 |
0.44-0.65 |
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|
T22 |
0.05-0.15 |
≤0.50 |
0.30-0.60 |
≤0.025 |
≤0.025 |
1.90-2.60 |
0.87-1.13 |
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|
T91 |
0.05-0.15 |
≤0.50 |
1.00-1.50 |
≤0.035 |
≤0.035 |
- |
- |
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ASTM A210 |
A-1 |
0.13-0.19 |
≥0.1 |
0.45-0.65 |
≤0.035 |
≤0.035 |
- |
- |
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C |
0.18-0.24 |
≥0.1 |
0.80-1.10 |
≤0.035 |
≤0.035 |
- |
- |
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JIS G3461 |
STB340 |
≤0.18 |
≤0.35 |
0.30-0.60 |
≤0.035 |
≤0.035 |
- |
- |
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STB410 |
≤0.32 |
≤0.35 |
0.30-0.80 |
≤0.035 |
≤0.035 |
- |
- |
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STB510 |
≤0.25 |
≤0.35 |
1.00-1.50 |
≤0.035 |
≤0.035 |
- |
- |
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JIS G3462 |
STBA12 |
0.10-0.20 |
0.10-0.50 |
0.30-0.80 |
≤0.035 |
≤0.035 |
- |
0.45-0.65 |
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STBA13 |
0.15-0.25 |
0.10-0.50 |
0.30-0.80 |
≤0.035 |
≤0.035 |
- |
0.45-0.65 |
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|
STBA20 |
0.10-0.20 |
0.10-0.50 |
0.30-0.60 |
≤0.035 |
≤0.035 |
0.50-0.80 |
0.40-0.65 |
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STBA22 |
≤0.15 |
≤0.50 |
0.30-0.60 |
≤0.035 |
≤0.035 |
0.80-1.25 |
0.45-0.65 |
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STBA24 |
≤0.15 |
≤0.50 |
0.30-0.60 |
≤0.030 |
≤0.030 |
1.90-2.60 |
0.87-1.18 |
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Standard |
Grade |
Mechanical properties |
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|
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
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ASTM A179 |
A179 |
≥325 |
≥180 |
≥35 |
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ASTM A213 |
T11 |
≥415 |
≥205 |
≥30 |
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T12 |
≥415 |
≥220 |
≥30 |
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T22 |
≥415 |
≥205 |
≥30 |
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T91 |
≥585 |
≥415 |
≥30 |
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ASTM A210 |
A-1 |
≥415 |
≥255 |
≥30 |
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C |
≥485 |
≥275 |
≥30 |
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JIS G3461 |
STB340 |
≥340 |
≥175 |
≥35 |
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STB410 |
≥410 |
≥255 |
≥25 |
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STB510 |
≥510 |
≥295 |
≥25 |
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JIS G3462 |
STBA12 |
≥380 |
≥205 |
≥30 |
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STBA13 |
≥410 |
≥205 |
≥30 |
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STBA20 |
≥410 |
≥205 |
≥30 |
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STBA22 |
≥410 |
≥205 |
≥30 |
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STBA24 |
≥410 |
≥205 |
≥30 |
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