... St33,St330,St37-2,SS330,SS400,ASTM1010,ASTM1017,ASTM1020Manufactured to meet ISO9001,ASTM,DIN,BS,GB and JIS requirements ... our company follows business philosophy os "customers first ,to strive for progress " the "customers first" principle for the majority of customers with ... quality service .we sincerely would like to set up business ...