ASTM A213(ASME SA213)

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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	●	●	●	●	●

Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel oiler, Superheater,and Heat-Exchanger Tubes
Application:	For manufacturing wall panel,economizer,superheater and steam pipeline of boilers
Size(mm):	O.D.: 28-168 W.T.: 2∼30 L: max 12000

Grade and Chemical Composition (%)

Grade	C	Mn	P≤	S≤	Si	Cr	Mo
T11	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	0.50-1.00	1.00-1.50
T12	0.05-0.15	0.30-0.61	0.025	0.025	≤0.50	0.80-1.25	0.44-0.65
T13	0.05-0.15	0.30-0.60	0.025	0.025	≤0.50	1.90-2.60	0.87-1.13

Mechanical Properties(MPa):

Grade	Tensile Point	Yield Point
T11	≥415	≥205
T12	≥415	≥220
T13	≥415	≥205