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Seamless carbon steel boiler tubes for high

Seamless carbon steel boiler tubes for high1

release time:2018-03-16 10:09:41
Seamless carbon steel boiler tubes for high1

 

 

Standard of implementation: ASTM A192/ A192M/ASME SA-192/ SA-192M

Application: the manufacture of boiler water cooling wall, coal heater, steam  heater and steam pipe

Major grade: SA192, etc. through consultation, can also supply other special  grade of steel pipe

Chemical composition and mechanical properties

Standard

Steel grade

Chemical constituents (%)

Mechanical properties

Elongation (%)

C

Mn

Si

P.S

Tensile strength( MPa )

Yield strength( MPa )

ASTMA192

A192

0.06 ~ 0.18

0.27 ~ 0.63

≤ 0.25

≤ 0.035

≥ 325

≥ 180

≥ 35

Hardness requirements

Brinell hardness

Hardness of the Luo

S≥5.1mm

S<5.1mm

≤137 HB

≤77  HRB

Dimensional tolerance

Type of steel tube

Outside diameter(D)

Wall thickness(S)

Outside diameter(mm)

Deviation(mm)

Outside diameter(mm)

Deviation(mm)

Hot rolling tube

≤101.6

+0.4~-0.8

76~168.3

+28%~0

>101.6~168.3

+0.4~-1.2

Cold drawn pipe

<25.4

+0.10

≤38.1

+20%~0

25.4~38.1

+0.15

>38.1~<50.8

+0.20

>38.1

+22%~0