20#
seamless steel pipe is made of steel ingot or solid tube blank through perforation, and then made by hot rolling, cold rolling or cold drawing. The raw material for rolling 20 tube seamless pipe is round tube blank. The round tube embryo is cut into a blank of about 1 meter in length by a cutting machine and sent to the furnace for heating via a conveyor belt. The billet is fed into a furnace and heated to a temperature of approximately 1200 degrees Celsius.
