... ,TA3,TA9,TA10,Gr.1,Gr.2,Gr.3,Gr.7,Gr.12 3.Best quality with low cost and short delivery ... ,TA3,TA9,TA10,Gr.1,Gr.2,Gr.3,Gr.7,Gr.123..Standard:ASTM B348-06,SB/T3624-1995,GB ... , electric power industry,shipbuilding industry construction industry and so on.7.Best quality with low cost and short delivery .