45# Seamless Steel pipe

Short Description:

Production specification:

Outer diameter of steel pipe 20-426

Steel pipe wall thickness of 20-426

Product introduction:

The raw material of rolling seamless tube is round tube billet, round tube embryo is cut and processed by cutting machine with the growth of about 1 meter blank, and sent to the furnace by conveyor belt heating. The billet is fed into a furnace and heated to about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. After the round tube billet comes out, it is perforated by the pressure punch. Generally, the most common perforator is the conical roll perforator. This kind of perforator has high production efficiency, good product quality, large perforating diameter and can wear a variety of steel. After perforation, the round tube billet is successively rolled by three high diagonal, continuous rolling or extrusion. After extrusion, the pipe should be removed for sizing. The caliper rotates into the steel embryo through a conical drill at high speed to punch holes and form steel pipes. The inner diameter of the steel pipe is determined by the outer diameter length of the caliper drill bit. After sizing the steel pipe, it enters the cooling tower and is cooled by spraying water. After cooling the steel pipe, it will be straightened. After straightening, the steel pipe is sent by conveyor belt to the metal inspection machine (or hydraulic test) for internal inspection. If there are cracks, bubbles and other problems inside the steel pipe, it will be detected. Steel pipe quality inspection after the strict hand selection. After the steel pipe is inspected, the number, specification and production lot number are sprayed with paint. And by the crane into the warehouse.