Recently, baosteel special steel to hubei yichang a polysilicon project delivery 2 sets of heater with large diameter UNS N08810 pipes. The two sets of equipment, pipe is the first 2012 sets of supply pipe after 12 and 13 sets of equipment. Upon examination, the pipe after the mechanical performance, organizational performance and bend surface quality fully meet the requirements of users. Marks of baosteel special steel has UNS N08810 large-diameter pipe stable batch manufacturing capacity.

UNS N08810 alloy can be stable when exposed to high temperature environment for a long time of austenitic organization, has excellent high temperature mechanics, high temperature oxidation resistance and certain corrosion resistance, and therefore suitable for the production of polysilicon production equipment with heater parts. Since hot extrusion machine production line put into production in 2009, baosteel research institute of technology center of special steel and baosteel special steel technology research and development and marketing team, have conquered UNS N08810 nickel-based alloy of large diameter pipeline key manufacturing technology and the whole process of using technology, solved the microstructure, mechanical properties and surface quality control, and pipe material use and technical problems, and implements the heater equipment, in 2012 first sets the supply of large diameter UNS N08810 pipes.

In recent years, the project team with equipment manufacturers and equipment using the enterprise positive communication and the continuous tracking of domestic polysilicon project, further expand the use of performance of the product, we have accumulated supply pipe 13 sets of equipment, hundreds of tons in weight. Use of baosteel special steel pipe heater equipment is mainly used in xinjiang, qinghai, Inner Mongolia, and luoyang big polysilicon