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JIS G 3462 STBA 12 STBA 13 STBA 20 Alloy Steel Seamless Tube For Heat Exchanger / Boiler
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JIS G 3462 STBA 12 STBA 13 STBA 20 Alloy Steel Seamless Tube For Heat Exchanger / Boiler

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JIS G 3462 STBA 12  STBA 13  STBA 20  STBA 22  STBA23  STBA 24  STBA 25  STBA 26 Alloy Steel Boiler and Heat Exchanger

 

 

JIS G 3462 Alloy steel boiler and heat exchanger

Standard:JIS G 3462

Wall thickness    0.5-50mm  Diameter   5-420mmLength        Upon request

 

Application: for boiler and heat exchanger

 

Produce method:

               STBA 12,STBA13,STBA20,,STBA 22 :electric resistant welding

               STBA 25  STBA 26 :Seamless

 

Heat treatment:

              STBA 12,STBA13:Low temperature annealing,

                                             isothermal  annealing, full annealing,

                                             normalizing followed by tempering.

               STBA 20  STBA22: Low temperature annealing,

                                              isothermal annealing, full annealing,

                                              normalizing followed by tempering.

               STBA 23  STBA 24  STBA 25  STBA 26:Isothermal annealing,

                                                                              full annealing followed by tempering.

 

CHEMICAL COMPOSITION %  max

Steel grade

C

Si

Mn

P

S

Cr

Mo

STBA 12

0.10-0.20

0.10-0.50

0.30-0.80

0.035

0.035

-

0.45-0.65

STBA 13

0.15-0.25

0.10-0.50

0.30-0.80

0.035

0.035

-

0.45-0.65

STBA 20

0.10-0.20

0.10-0.50

0.30-0.60

0.035

0.035

0.50-0.80

0.45-0.65

STBA 22

0.15

0.5

0.30-0.60

0.035

0.035

0.80-1.25

0.45-0.65

STBA 23

0.15

0.50-1.00

0.30-0.60

0.035

0.030

1.00-1.50

0.45-0.65

STBA 24

0.15

0.5

0.30-0.60

0.035

0.030

1.90-2.60

0.87-1.13

STBA 25

0.15

0.5

0.30-0.60

0.035

0.030

4.00-6.00

0.45-0.65

STBA 26

0.15

0.25-1.00

0.30-0.60

0.035

0.030

8.

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TORICH INTERNATIONAL CO.,LTD
706 Qiling Mansion North Building Yinzhou District, Ningbo, Zhejiang, China (Mainland)
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