ASTM 178, Grade D Heat Exchanger Tube

ASTM 178, Grade D Heat Exchanger Tube

ASTM 178, Grade D Heat Exchanger Tube with plain end

ASTM A178 Grade D heat exchanger tube Measurement wall thickness

ASTM A178 Grade D heat exchanger tube Measurement out diameter

ASTM A178 Grade D heat exchanger tube Measurement length

ASTM A178 Grade D heat exchanger tube qualified products stacked

Standards: ASTM A178 (ASME SA178)

ASTM A178/A 178M Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes

Grade: Grade A Grade C Grade D

Size: OD 1/2in-5in(12.7-127mm)

Wall thickness:0.035in-0.360in(0.9-9.1mm)

Different name

Condenser steel tube,heat-exchanger tube,low carbon steel pipe,Resistance welded steel tube ,Bolier flues,Spoerheater flues and safe ends,ERW carbon steel pipes.

Chemical Composition:

Element % Grade D
Manganess Steel
C 0.27 Max
Mn 1.00-1.50
P 0.030
S 0.015
Si 0.10 Min.

Mechanical Property:

Grade C & Grade D tubes shall conform to the requirements -tensile properties prescribed below:







For longitudinal strip tests a deduction for






From the basic minimum elongation of the following percentage points shall be made

Outside diameter and Wall ThicknessTolerance:

Outside Diameter tol Wall thickness tol

OD < 50


S < 4mm


OD > 50






Referenced Documents:

ASTM standards:

  • A450/A450M Specification for General Requirements for Carbon,Ferritic Alloy,and Austenitic Alloy steel tubes.
  • E213 Practice for Ultrasonic Examination of Metal pipe and tubing.
  • E273 Practice for Ultrasonic Examination of Longitudinal Welded Pipe and Tubing.

Manufacturing Process: ERW

Heat treatment:

After welding,all tubes shall be heat treated at a temperature of 1650°F(900℃) or higher and followed by cooling in air or in the cooling chamber of a controlled-atmosphere furnace,Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F(650℃)or higher.

Surface Condition:

Finished tubes shall be free of scale,A slight amount of oxidation will not be considered as scale.

Mechanical Tests Required:

Flattenting Test/Flaring test/Flange test/Crush test/Tension test/Reverse Flattening test/Hydrostatic or Nondestructive Electric Test


Used in boiler, superheater, heat-exchanger and pressure equipment in Petrochemical factory, Refinery factory, sugar mill, power plant, power plant, shipbuilding.

SA178 Heat Exchanger and Condenser Tubes in various Application Industries

  • Air Preheater Unit
  • Steam generating Boiler
  • Power Generation
  • Economiser
  • Heat Exchangers
  • Electric Power Plants
  • Fossil Fuel Plants
  • Water Supply Systems
  • Waste Heat Plants
  • Cogeneration Facilities


Bundle package

Protected by plastic bag outside

Packed in container

Packed in container

Pipe caps as customer request

As per your requirement

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Weled steel pipe specification, Standard and identification

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.