... ductile iron k9 tube OD:6-1000mm WT:1-1200mm Series:200/300/400 Seamless.welded,hot rolled,cold drawn,ERW ductile iron ... /316L, 310S etc. 2.Factory price Detailed discription :2. Process Method: cold drawn and cold rolled3.Standards:ASTM / ASME, GB ... and decorations, railroad vehicles.Some seamless stainless steel pipe/tube which has excellent corrosion resistant, mechanical properties are suitable to ...