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

We follow the following chemical requirements for A53 pipe:

Type S
(seamless)
 Type E Type F
   (electric-
resistance welded)
 (furnace-
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. %0.050.050.050.050.05
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. %0.150.150.150.150.15
Vanadium, max. %0.080.080.080.080.08