Features: 1) Seamless Low Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes 2) Manufactured as per ASME SA213 Features:Seamless Low Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes Grades: T12/T22 In accordance with ASTM SA213 Packing:In bundles Seamless Steel Pipe , and Heat-Exchanger Tubes ASTM A53 GR.B