· PDF fileNBR Alloyd Steel PTFE NBR Ductile Iron Alloyd Steel NBR Metal+TFE Carbon Steel...
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· PDF fileNBR Alloyd Steel PTFE NBR Ductile Iron Alloyd Steel NBR Metal+TFE Carbon Steel Carbon Steel Ductile Iron Carbon St eel Ductile Iron Alloyd Steel Alloyd Steel