ASTM B474/B474M-19(2023)

Annotation of standard text ASTM B474/B474M-19(2023) :

This specification covers electric fusion welded pipe suitable for high-temperature or corrosive service. The pipes are designated into five classes namely Class 1, Class 2, Class 3, Class 4 and Class 5, according to how they are to be welded. The joints shall be full penetration double-welded or single-welded butt joints employing fusion welding processes. The furnished pipe shall undergo heat treatment and a chemical analysis shall be employed for both plate and weld. Each pipe shall be subjected to transverse tension test, transverse guided weld bend test and hydrostatic pressure test.


Keywords:
fusion welded, high-temperature alloy, pipe,, ICS Number Code 77.150.40 (Nickel and chromium products)