ASTM A672 A55 EFW Pipe

ASTM A672 A55 EFW pipe is manufactured from ASTM A285 Grade C plate and is intended for high pressure service at moderate temperatures. Amardeep Steel supplies this grade for applications where fabricated EFW pipe is required under the ASTM A672 specification. Buyers may also see enquiries written as “A672 CA55”; CA55 is the A671 designation for pipe made from the same plate grade. For higher strength requirements, see our ASTM A672 C60, C65 and C70 pipes. You can also explore the complete ASTM A672 EFW pipe range and our LSAW pipes and tubes. Every order includes plate and weld certificates, radiography reports and full heat traceability.

What Is ASTM A672 A55 EFW Pipe?

ASTM A672 covers electric fusion welded steel pipe, made from pressure vessel plate with a filler metal weld, for high pressure service at moderate temperatures. Grade A55 uses ASTM A285 Grade C, a plain carbon steel plate with a minimum tensile strength of 380 MPa. It is the strongest of the three A285 based grades, A45, A50 and A55.

A672 A55 and CA55: Same Plate, Two Specifications

A672 grade names use a letter for the plate family and a number for the tensile level, so A285 Grade C pipe is A55. ASTM A671, the specification for atmospheric and lower temperatures, adds a "C" prefix and calls the same plate CA55. "A672 CA55" mixes the two. Order A672 A55 for moderate temperature pressure service and A671 CA55 for atmospheric and low temperature service.

Heat Treatment of A672 A55 Pipe

• Post weld heat treatment: 590 to 680 degrees Celsius (1100 to 1250 degrees Fahrenheit)
• Normalizing: 925 degrees Celsius (1700 degrees Fahrenheit) maximum

Applications of ASTM A672 A55 Pipe

• Water transmission and cooling water mains
• Low pressure process and utility headers
• Large diameter fabricated spools and penstock sections
• Plant piping under ASME B31.3 at moderate temperature

Testing and Documentation

Every order of A672 A55 pipe goes through the checks below at our testing facility or approved third party labs.

• Chemical analysis of plate and deposited weld metal
• Transverse tension test
• Transverse guided weld bend test
• Radiography of the weld seam (Class x1 and x2)
• Hydrostatic test (Class x2 and x3)
• Visual and dimensional inspection

Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.

Packing and Marking

Each length is marked with the specification, grade, class, size, heat number and manufacturer name. Bevelled ends are protected with caps or bevel protectors, and lengths are shipped loose with dunnage or in lashed bundles. Read more about our packing and despatch process.