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Billet Preparation:
Seamless steel pipes are made from solid round steel billets.
Heating:
The steel billet is heated to a high temperature to make it malleable.
Piercing:
The heated billet is pierced through the center to create a hollow tube.
Elongation:
The hollow billet is elongated using a series of rollers to achieve the desired length and diameter.
Sizing:
The tube is further reduced to the required diameter and wall thickness by passing it through sizing mills.
Heat Treatment:
Depending on customer specifications and application requirements, the tubes undergo heat treatment processes to enhance properties.
Finishing:
The pipes are cut to the required length and finished according to dimensional and wall thickness specifications.
Inspection and Testing:
Pipes undergo rigorous inspection and testing to ensure they meet industry standards such as API, ASTM, and ASME.
Rolling Processes
Hot Rolling:
Metal is rolled above its recrystallization temperature, altering its grain structure for improved ductility and toughness.
Produces flat steel sheets with specific thicknesses.
Cold Rolling:
Metal is rolled below its recrystallization temperature, resulting in a smoother, more precise finish.
Enhances strength and hardness.
These processes ensure that seamless steel pipes meet precise standards and are suitable for a wide range of demanding applications.
