The production process of seamless steel pipes mainly includes the following steps:

a. Preparation of raw materials: Select suitable steel billets, requiring smooth surface, no bubbles, no cracks, and no obvious defects.

b. Heating: Heat the steel billet to a high temperature state to make it plastic and easy to form.

c. Perforation: The heated steel billet is pierced into a tube billet through a piercing machine, which is the preliminarily formed steel pipe.

d. Rolling tube: Rolling the tube blank multiple times to reduce its diameter, increase its wall thickness, and eliminate internal stress.

e. Sizing: The steel pipe is finally shaped using a sizing machine to meet the standard requirements for diameter and wall thickness.

f. Cooling: The solidified steel pipe is cooled to increase its hardness and strength.

g. Straightening: Straightening the cooled steel pipe to eliminate its bending deformation.

h. Quality inspection: Conduct quality inspection on finished steel pipes, including dimensions, wall thickness, hardness, surface quality, and other aspects