ASTM A178 ERW Welded Tubes Super Heater Tubes

ASTM A178 ERW Welded Tubes Super Heater Tubes

Grade A, Grade C, or Grade D
OD: 1/2 to 5 in. [12.7 to 127 mm]
WT:0.035 to 0.360 in. [0.9 to 9.1 mm]
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Product Details

Grade A, Grade C, or Grade D

OD: 1/2 to 5 in. [12.7 to 127 mm]

WT:0.035 to 0.360 in. [0.9 to 9.1 mm] 

The steel shall be of Grades A (low-carbon steel), C (medium-carbon steel), or D (carbon-manganese steel). All tubes shall be submitted to heat treatment after welding, followed by cooling. The steel shall conform to stated compositions of carbon, manganese, phosphorus, sulphur, and silicon. Grades C and D shall conform to given tensile requirements, that is tensile strength, yield strength, and elongation.

Type: ERW/Welded/Fabricated/CDR

Form: Round pipe/tube. Square pipe/tube . Rectangle pipe/tubes

End:Plain/Beveled End Protection : Plastic cap

Outside Coating : Black Painting. Anti-Corrosion Oil. Galvanised finish . finished as per custom requirement .

Chemical Composition

Element

Composition %

Gr A(low-carbon steel)

Gr B(medium-carbon steel)

Gr D(C-Mn steel)

C

0.06-0.18

0.35

0.27

Mn

0.27-0.63

0.8

1-1.5

p

0.035

0.035

0.03

S

0.035

0.035

0.015

Si

...

...

0.1 min

Mechanical Properties


Gr C

Gr D

Tensile strength min ksi [MPa]

60[415]

70[455]

Yield strength min ksi [MPa]

37[255]

40[275]

Elonation in 2in %

30

30

Application: use as boiler tubes, boiler flues, superheater flues, and safe ends 

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