China Grade TA1,TA2,TA3,TA4,TC4,TA9,TA18,TA23. America Grade:Gr1,Gr2,Gr3,Gr4,Gr5,Gr7,Gr9,Gr12. China Standard:GB/T 2965 GB/T32185. America Standrd:ASTM B348. Specifications: 2 mm~100 mm. Surface: black, pickling. Product characteristics: small density, high specific strength, acid resistance, alkali, salt, seawater corrosion resistance, superior mechanical performance. Main uses: used for petroleum industry, electric power industry, seawater desalination industry, salt and alkali production industry, coking industry, medical and surgical implants.
