1000MW 超超临界压力发电机组管道用P92钢焊接缺欠及质量控制
1000MW 초초림계압력발전궤조관도용P92강한접결흠급질량공제
Welding Imperfection and Quality Control of P92 Steel Used for Pipelines of 1 000 MW Ultra Supercritical Pressure Generating Unit