ASTM A214 Carbon Steel Heat Exchanger Electric Resistance Welded Pipe

ASTM A214 Electric resistance welded carbon steel heat exchanger and condenser tubes

Applications: for Boilers,Superheaters,Heat-Exchangers, Condensers        

            
Size range: O.D.:6-76mm     W.T.:0.9-19.0mm      L: according to customer requirement           

Manufacture:

Tubes are made by electric-resistance welding.

Surface Condition:

The finished tubes are free of scale., slight amount of oxidation is not considered as scale

Heat treatment:

After welding, all tubes are heat treated at a temperature of 1200℉(650℃) or higher and following by cooling in air or in a 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℉(650℃) or higher

Test and Inspection:

Hardness Requirement

Mechanical Test

 - Flattening Test

 - Flange Test

 - Reverse Test

 - Hydrostatic or Nondestructive Electric Test

Steel Grade and Chemical Compositions:

Mechanical Properties
Tensile Streghth:   min ksi[Mpa]  47[325]     
Yield Point:           min ksi[Mpa] 26[180]     
Elongation:          ≥35%     
Hardness:           ≤72HRB