Factory Casing Technology:


Ingot heating hydraulic punching reheating extension regular rolling reheating sizing cooling straightening pipe cutting inspection


Ingot heating: ring furnace for 216mm periodic tube mill and double ring furnace for 318mm periodic tube mill.
Hydraulic punching: 216mm is 10 kN hydraulic punching, 318 mm stamping, 18 kN hydraulic press.
Extension: Casing plant uses two roller-guided extenders.
Reheating: Use tray oven, use rolling mill cycle, and then do not use heat in the oven.
Dimension: Use double-roll 5-frame sizing machine.


The cold bed in tubing and casing plant is a one-way chain cold bed. The product specifications of 216mm circular rolling mill are 114.3-319 mm, the wall thickness is 6-40 mm, and 318 mm circular rolling unit rolling product specifications 168-377 mm, the wall thickness is 6-40 mm. As a well pipe, it can produce all kinds of casing and some drill pipes.


In order to improve the quality of casing body, a set of 180 mm precision tube rolling mill was designed in China and the United States in 1994 by introducing technology, jointly designing and manufacturing equipment. Continuous casting round pipe, annular heating furnace heating, conical roll piercing, precision rolling mill rolling, 12-stand three-roll micro-tensioning sizing, cold bed cooling. The only seamless steel tube production line in the world has been formed. Its production process is EAF furnace smelting vacuum degassing continuous casting heat conversion tube heating piercing rolling sizing cooling tempering on-line quenching (reservation) tempering sizing cooling straightening sawing. Cutting Cutting Head Inspection Straight Pipe Processing of Guideway.