Each alloy element in ASME SA213 T91 boier pipe has the effect of solid solution strengthening dispersion strengthening and improving the oxidation resistance a

The heat treatment and recrystallization annealing of T22 steel pipe are the key. The austenitization must be made at a sufficiently high temperature. At the s

From the analysis of the ASME SA213 T11 boiler pipe chemical composition, metallographic structure, macroscopic and microscopic fracture of the pinhole defect,

After the ASME SA213 T9 steel pipe was treated with different heat treatment process, different metallographic structure could be obtained, and the surface rou