lowest cost of silicon nitride ceramic tube bobbin
Si3N4 Silicon Nitride Ceramic Guide Roll For HF Tube . Si3N4 Silicon Nitride Ceramic Guide Roll For HF Tube And Pipe Welding. The electric resistance welding (ERW) is used to fabricate steel pipes and tubes.Silicon Nitride Ceramic is typically used to make welding guide rolls for the high frequency ERW in continuous steel tube & aluminium tube production.
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