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Ống trao đổi nhiệt ASTM A249

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Ống trao đổi nhiệt ASTM A249

ASTM A249 Heat Exchanger Service Tubes or Pipe
 

Product Catalogues

Ống inox / thép không gỉ trao đổi nhiệt (ASTM A-249)

Heat Exchanger Service Tube or pipe (ASTM A-249)

 

Standard Dimension

Outside Diameter

Wall Thickness(mm)

NF A 49-249

ASTM A-249

1.2

1.50

1.60

1.65

2.0

25

19.05

●

●

 

⊙

 

25.40

25.40

●

●

 

⊙

 

28

31.80

●

●

 

⊙

 

38

35

●

●

 

 

 

40

36

●

●

 

 

 

51

38.10

●

●

 

⊙

 

52

41.30

●

●

 

 

 

53

44.45

●

●

 

 

 

63.50

50.80

 

●

●

●

 

70

63.50

 

●

●

●

●

76.10

76.20

 

●

●

●

●

85

 

 

●

●

●

●

101.60

101.60

 

●

●

●

●

104

 

 

●

●

●

●

4.00

101.60

 

●

●

●

●

⊙ =Made to order ● =Usual production

Note: Other sizes required upon request

 

Chemical Composition

Elements

304 (wt %)

304L (wt %)

316L (wt %)

(C)

Carbon, Max.

0.080

0.035

0.035

(Mn)

Manganese, Max

2.00

2.00

2.00

(P)

Phosphorus, Max.

0.040

0.040

0.040

(S)

Sulfur, Max.

0.030

0.030

0.030**

(Si)

Silicon, Max.

0.75

0.75

0.75

(Ni)

Nickel

8.0–11.0

8.0–13.0

10.0–15.0

(Cr

Chromium

18.0–20.0

18.0–20.0

16.0–18.0

(Mo)

Molybdenum

N/A

N/A

2.0–3.0

(Fe)

Iron

Bal.

Bal.

Bal.

(Cu)

Copper

N/A

N/A

N/A

(N)

Nitrogen

N/A

N/A

N/A

 

Surface Condition

The tubes or pipe, after final heat treatment, shall be chemically descaled or pickled free of scale. When bright annealing is used, pickling or chemical descaling is not necessary.

Product Marking

In addition to the marking prescribed in Specification A 1016/ A 1016M, the marking for Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H shall also include the heat number and the heat-treatment lot identification.

Ordering Information

It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this specification. Such requirements may include, but are not limited to, the following:

● Quantity (feet, metres, or number of lengths)

● Name of material welded tubes or pipe (WLD) or heavily cold worked tubes or pipe (HCW)

● Grade

● Size (outside diameter and nominal wall thickness)

● Length (specific or random)

● Optional requirements

● Test report required (Specification A 1016/A 1016M)

● Specification designation

● Special requirements and any supplementary requirements selected

*** Due to continuous product development, information may change without notice.

LƯU Ý:

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