... steel pipesSteel GradeASTM A 53: Grade A, Grade B, Grade C, Type F, Type EASTM A519: 1010-1045, 4130-4142, 5135GB/T8162: 10 ... Condition: BkS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)Packing: Plastic plugs in both ends, Hexagonal bundles of max ...