ASTM A192/A192M-02

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OD(mm)

Wall Thickness Unit(mm)

2-3

3-4

4-5

5-6

6-7

7-8

8-9

9-10

10-11

11-12

12-16

16-18

18-20

20-24

24-30

Φ20-Φ23

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Φ24-Φ36

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Φ38-Φ43

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Φ44-Φ60

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Φ61-Φ76

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Φ89-Φ114

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Φ121-133

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Φ140-Φ159

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Φ168-Φ180

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OD(mm)	Wall Thickness Unit(mm)
/	10.5-12	12.5-17	18-20	21-25	26-30
Φ127	●	●	●	●	●
Φ133	●	●	●	●	●
Φ140	●	●	●	●	●
Φ146	●	●	●	●	●
Φ152	●	●	●	●	●
Φ159	●	●	●	●	●
Φ168	●	●	●	●	●
Φ180	●	●	●	●	●

Seamless Carbon Steel Bolier Tubes for High-Pressure
Application:	For seamless carbon steel bolier and superheater tubes for high-pressure service
Size(mm):	O.D.:28∼168 W.T.:2∼30 L:max 12000

Grade and Chemical Composition (%)

Chemical Composition	C	Mn	P≤	S≤	Si≤
Chemical Composition	0.06-0.18	0.27-0.63	0.035	0.035	0.25

SA-450/SA-450M):

OD In (mm)	+	-	WT In(mm)	+	-
<1(25.4)	0.10	0.10	≤1.1/2(38.1)	20%	0
1∼1.1/2(25.4∼38.1)	0.15	0.15	>1.1/2(38.1)	22%	0
>1.1/2∼<2(38.1∼50.8)	0.20	0.20
2∼<2.1/2(50.8∼63.5)	0.25	0.25
2.1/2∼<3(63.5∼76.2)	0.30	0.30
3∼4(76.2∼101.6)	0.38	0.38
>4∼7.1/2(101.6∼190.5)	0.38	0.64
>7.1/2∼9(190.5∼228.6)	0.38	1.14

Brinell Hardness Number
(WT≥)0.200In(5.1mm)

Rockwell Hardness Number

(WT��)0.200In(5.1mm)

137HRB

77HRB