What is ASTM A672?
ASTM A672 is a standard specification for pressure vessel grade electrofusion welded steel pipe made from pressure vessel grade steel plate. This pipe is manufactured using the electrofusion welding (EFW) process and has filler metal added, suitable for high-pressure environments at moderate temperatures.
What is ASTM A672 EFW steel pipe?
ASTM A672 EFW steel pipe is a standard specification for pressure vessel grade electrofusion welded steel pipe made from pressure vessel grade steel plate, designed for high-pressure environments at moderate temperatures.
What is the difference between ASTM A672 and ASTM A671?
Both ASTM A671 and A672 are standards for steel pipe made from pressure vessel grade steel plate using electrofusion welding (EFW) technology and with filler metal added. However, they differ in their application scope, grade, specifications, dimensions, and specific applications.
What is the difference between ERW steel pipe and seamless steel pipe?
The main difference lies in the manufacturing process: ERW steel pipe is made by welding steel strips into a tube, while seamless steel pipe is formed by punching and extruding a single piece of steel without welding; seamless steel pipe has no weld seams.
What are the advantages of ASTM A672 Electrofusion Welded (EFW) steel pipe?
ASTM A672 standard electrofusion welded (EFW) steel pipe has many advantages: high strength, suitable for high-pressure applications; excellent corrosion resistance; and good performance in high-temperature and thermal cycling environments. Its uniform, defect-free weld seam ensures structural integrity.
