... ~10mm Packing: bundle we are manufacturer fo all kinds of steel tubes, we are rich in experices and advanced technic in ... producing seamless steel tube.Material: carbon steel series such as 1010, 1018, 1020, 1026, 1045, SAE52100, GCr15 T11, T12, T22Standard: as ... per ASTM, DIN, JIS, GBSize: OD: 9-91mm, WT:1-12mm, L: 300-1200mm bearing steel tube