Round Metal Tube Heat Exchangers Low Carbon Steel ASTM A179 / ASME SA179

ASME SA179 Seamless cold drawn low carbon steel heat exchanger tubes

Standard: ASTM A179 / ASME SA179

Steel grade: Low carbon steel

Material shall conform to the applicable requirements of specification A450/A450M

Process: cold drawn

The tubes cover minimum wall thickness.

Application: tubular heat exchangers, condensers, and other heat transfer apparatus

Dimensional range:

OD: 19.05-76.2mm

Any specific size is to be discussed before offer

The tube be 100% eddy current tested

Ultrasonic test is as option

Straightness ≤1mm/1000mm

Roughness: Ra ≤0.8

Test

• The tubes shall have a hardness test, it is not exceeding 72HRB.
• One flattening test shall be made on specimens from each of two tubes from each lot or fraction thereof.
• One flaring test shall be made on specimens from each of two tubes from each lot or fraction thereof.
• When specified as a substitute for the flaring test, for tubes having a wall thickness (actual mean wall) less than 10% of the outside diameter, one test shall be made on specimens from each of two tubes other than specified above, the flange test shall not be required.
• Rockwell hardness tests shall be made on specimens from two tubes from each lot.(when the final heat treatment is in a continuous furnace, a lot shall include all tubes of the same size and heat, heat treated in the same furnace at the same temperature, time at heat, and furnace speed)
• Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the clients.

Mechanical properties

Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.

The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases

The case is most suitable for hanging by forklift.

EN10204-3.1 MTC shall be issued

EN10204-3.2 MTC is as option