Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

ST45.8 boiler tube


 

1.Standard:GB5310 
2.Grade:20G 25MoG 15MoG 15CrMoG 12Cr2MoG 12Cr1MoVG 
3.Thickness:1-15mm 
4.OD:5-200mm 
ST45.8/III high pressure boiler tube

ST45.8 high pressure boiler tube

1.Standard:GB5310

2.Grade:20G 25MoG 15MoG 15CrMoG 12Cr2MoG 12Cr1MoVG
3.Thickness:1-15mm
4.OD:5-200mm
5.application:It is used for heating-pipelines,containers,coal-saving devices superheaters and reheaters of high presure boilers(P>9.8Mpa,450degree<650degree)

 6.Package:seaworthy or as per buyers'requirement

 

Standard

Grade

Chemical Composition (%)

C

Si

Mn

V

Cr

Mo

P.S

 

20G

0.17-0.24

0.17-0.37

0.35-0.65

/

/

/

<=0.03

25MnG

0.22-0.30

0.17-0.37

0.70-1.00

/

/

/

<=0.03

15MoG

0.12-0.20

0.17-0.37

0.40-0.80

/

/

0.25-0.35

<=0.03

15CrMoG

0.12-0.18

0.17-0.37

0.40-0.70

/

0.80-1.10

0.40-0.55

<=0.03

12Cr2MoG

0.08-0.15

0.17-0.37

0.40-0.70

/

2.00-2.50

0.90-1.20

<=0.03

12Cr1MoVG

0.08-0.15

0.17-0.37

0.40-0.70

0.15-0.30

0.90-1.20

0.25-0.35

<=0.03

Mechanical Properties

Tensile Strength(Mpa)

Yield Strength(Mpa)

Elongation

(%)

20G

410-550

>=245

>=24

25MnG

>=415

>=240

>=22

15MoG

450-600

>=270

>=22

15CrMoG

440-640

>=235

>=21

12Cr2MoG

450-600

>=280

>=20

12Cr1MoVG

470-640

>=255

>=21

 

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