American Piping Products stocks a full range of A53 pipe (SA53 Pipe) in:

We follow the following chemical requirements for A53 pipe:

Type S
 Type E Type F
resistance welded)
welded pipe)
Grade AGrade BGrade AGrade BGrade A
Carbon max. %0.250.300.250.300.3
Manganese %0.951.20.951.21.2
Phosphorous, max. %
Sulfur, max. %0.0450.0450.0450.0450.045
Copper, max.%0.400.400.400.400.4
Nickel, max. %0.400.400.400.400.4
Chromium, max. %0.400.400.400.400.4
Molybdenum, max. %
Vanadium, max. %