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A106 Gr.B steel pipes (ASTM A106 Gr.B standard) are widely used in power generation industry for medium-to-high pressure steam pipelines, boiler feedwater pipes and turbine auxiliary system pipelines; applied in petrochemical and refining sector for transporting oil, gas, steam and non-corrosive process media, such as crude oil transmission pipelines, refinery distillation unit pipelines and chemical reactor connecting pipes; used in municipal engineering for high-pressure water supply networks and natural gas transmission pipelines; suitable for general industrial pressure systems like industrial compressor pipelines, hydraulic equipment tubes and pressure vessel connecting pipes; and also adopted in shipbuilding industry for marine engine cooling water pipelines and auxiliary system pressure pipes.