ASTM A671 EFW Pipes, Standard Designation for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures. Grades shall designate the type of plate used while class shall designate the type of heat treatment performed during pipe manufacture.
ASTM A671 EFW pipes undergo several tests like Hydrostatic testing or Ultrasonic examination, Eddy current testing, and NDT. Besides these tests, the A671 pipe’s physical and chemical properties are inspected.
Heat treatment may or may not be required to procure the desired properties or to comply with applicable code requisites. Supplementary requisites are provided for use when adscititious testing or examination is desired. Albeit the cost of the carbon predicated ASTM A671 EFW Pipes grades are low, the metal still offers quite a few plausible properties. For instance, the ASTM A671 EFW Pipes have excellent tensile vigor and ductility properties.
A671 and A672 are EFW (Electric-Fusion Welded) Carbon Steel Pipes used for atmospheric and lower temperatures applications (A671) and high-pressure service at moderate temperatures (A672).