n the production process of LSAW steel pipe, heating operation is a very important process to solve product quality because the primary process is in the hot state.


Heating with the furnace, according to the results, the furnace is divided into two kinds: the former is used to heat the billet from room temperature to processing temperature; the latter is used to reheat the required processing temperature in the billet.


Heating errors may occur, and cracks, wrinkles and migraines may occur on the outside surface of the tube.


There are many ways to use the furnace, but the main purpose is the annular furnace. The furnace has an annular furnace, which can slowly change the load in the direction of billet diameter from the inlet. The opposite furnace can be used at the outlet of heating and outlet water temperature. This operation is to heat the key billet evenly to a suitable temperature for processing. Because of the great influence on the quality of perforation, that is to say, when the temperature of process perforation is an important condition affecting the quality, the temperature of blank perforation is usually operated.