ASTM A161 Grade C Carbon Steel Seamless Tubes are ASTM specification Tubes with low carbon content.A161 Tubes are IBR certified tubes used for producing mechanical parts.
ASTM A161 Grade T-1 Alloy Steel Seamless Tubes are called as carbon Molybdenum tubes.A161 Gr.T-1 Tubes are used for heat exchangers and boilers with IBR,NACE & HIC certification