How are steel pipes produced
Steel pipe is an important type of steel pipe, steel pipe production process and various ways of production are more, generally speaking, the production of steel pipe specific operation steps and specific procedures are what? The following are the specific production procedures and main technological processes of common steel pipes for your reference:
Steel pipe production process
① Main production process of hot rolled steel pipe (△ main inspection process) :
Preparation and inspection of tube blank △ Heating of tube blank → perforation → Rolling of tube → reheating of steel tube → fixed (reduced) diameter → Heat treatment △ Straightening of finished pipe → finishing → inspection △(non-destructive, physical and chemical, table inspection) → storage
② Cold rolled (drawing) steel pipe main production process:
Blank preparation → pickling and lubrication → cold rolling (drawing)→ Heat treatment → straightening → finishing → inspection
The production process of cold steel pipe can be divided into two kinds: cold drawing and hot rolling. The production process of cold rolled steel pipe is generally more complicated than that of hot rolling. The tube billet should first be rolled by three rolls, and the sizing test should be carried out after extrusion. Then enter the annealing process, annealing to acid liquid pickling, pickling should pay attention to whether there is a large number of surface bubbling, if there is a large number of bubbling indicates that the quality of the steel pipe can not reach the corresponding standard. The appearance of cold-rolled steel pipe is shorter than that of hot-rolled steel pipe, the wall thickness of cold-rolled steel pipe is generally smaller than that of hot-rolled steel pipe, but the surface looks brighter than that of thick-walled steel pipe, the surface is not too rough, and the diameter is not too much burr.
