Copper pipelines and oxygen flow meters being procured The Public Works Department has tied up with other government agencies to source materials for additional oxygen beds across the State. Copper pipelines, oxygen flow meters and such other materials that are used in oxygen lines in hospitals have been in high demand. In a bid to source these materials quickly, the department had sought help from the Tamil Nadu Medical Services Corporation and the State Industries Promotion Corporation of Tamil Nadu Ltd. Work on oxygen beds was likely to be completed quickly as most of the required materials had arrived at the PWD Complex, Chennai, on Monday. Those stocked in Chennai were distributed to hospitals in other parts of the State.