Development of Domestic Manufacturing Technologies for Stainless Steel Tubes and Gap with Similar Technologies developed Overseas

Detailed in the article are the development of domestic manufacturing technologies for stainless steel tubes, including hot-piercing and cold-processing techniques developed since the '50s. Also addressed here is the gap between the domestic sector and its counterpart overseas on the said technologies involving nine aspects, namely, bloom-making process, tube hot-rolling process, tube cold-rolling/drawing processes, degreasing process, heat treatment process, process lubrication, surface polishing, NDT and tube deep-processing. Proposals are put forward, covering such issues as" developing extrusion process and hot-extruded tubulars "," spreading out bright heat treatment process "," organizing specialized production of specialty tubing " and" developing steel tube deep-processing to enhance economic benefits for businesses ", etc.