ASME SA178 Grade A Carbon Steel ERW Tube , Boiler and Heat Exchanger Tube

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Province/State:zhejiang

Country/Region:china

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ASME SA178 Grade A Carbon Steel ERW Tube , Boiler and Heat Exchanger Tube

Brand Name	YUHONG
Model Number	ASME SA178 Grade A Carbon Steel ERW Tube
Certification	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008.
Place of Origin	CHINA
Minimum Order Quantity	1000KGS
Payment Terms	L/C, T/T
Delivery Time	7days
Packaging Details	Ply-wooden Case /Bundle with plastic Cap
Product Name	Heat Exchanger Tube
Specification	ASTM A178, ASME SA178
Material	Grade A, C, D
O.D.	1/2" to 5" (12.7 to 127 mm)
Min. Thickness	0.035 to 0.360 in. (0.9 to 9.1 mm)
Length	Single Random, Double Random & Cut Length
End	Plain Ends / Beveled Ends
Process	Cold Drawn, Hot Finished
Application	Boiler, Heat Exchanger, Superheat
High Light	ASTM A178 Grade A Heat Exchanger Tube , Carbon Steel ERW Tube

Detailed Product Description

ASTM A178 / ASME SA178 Gr.A Carbon Steel ERW Tube Heat Exchanger Tube

ASTM A178 /ASME SA178 this specification covers Grade A, C and D material with minimum-wall-thickness. The steel for Grade D shall be killed. carbon steel tubes under this specification shall be made by electric-resistance-welding / ERW process, which used in boiler, superheater, heat exchanger, etc.

Comparison with Other Standards

ASTM A192: For seamless boiler tubes, used in higher-pressure applications.
ASTM A210: Covers seamless medium-carbon steel tubes, offering higher strength than A178.
Grade A vs. Grade D: Grade D has higher carbon content (0.15–0.25%) for increased strength.

ASME SA178 Grade A Carbon Steel ERW Tube Chemical Composition

Element %.	ASTM A178/ ASME SA-178
Element %.	Grade A	Grade C	Grade D
C	0.06~0.18	≤0.35	≤0.27
Mn	0.27~0.63	≤0.80	1.00~1.50
P	≤0.035	≤0.035	≤0.030
S	≤0.035	≤0.035	≤0.015
Si	-	-	≥0.10

ASME SA178 Grade A Carbon Steel ERW Tube Mechanical Properties

ASTM A178	Grade C	Grade D
Tensile strength ksi [MPa]	60 [415]	70 [485]
Yield strength ksi [MPa]	37 [255]	40 [275]
Eelongation in 2" min. %	30	30
For longitudinal strip tests a deduction for each 1 ⁄ 32 in. [0.8 mm] decrease in 1.50A 1.50A wall thickness below 5 ⁄ 16 in. [8 mm] from the basic minimum elongation of the following percentage points shall be made.

Manufacturing Process

ERW (Electric Resistance Welding): Sheets of steel are formed into a cylindrical shape, and edges are fused using electrical resistance. This method ensures precise dimensions and cost-effectiveness.
Post-Weld Heat Treatment: Often applied to relieve residual stresses and enhance mechanical properties.

Applications

Boilers and Superheaters: Designed for high-pressure, high-temperature environments (e.g., power plants, industrial boilers).
Heat Exchangers: Efficient thermal performance in HVAC and process industries.
Pressure Vessels: Suitable for moderate-stress applications due to ERW integrity.

Product Tags: ASME SA178 Grade A ERW Tube Boiler Carbon Steel ERW Tube Heat Exchanger Carbon Steel ERW Tube

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