The delivery status of DIN 1630 ST52.4 seamless steel pipe is generally hot-rolled and delivered after heat treatment. DIN 1630 ST52.4 seamless steel pipe should be strictly selected by hand after quality inspection. After quality inspection, the surface should be oiled, followed by several cold drawing experiments, and piercing experiments after hot rolling. If the piercing diameter is too large, straightening and correction should be carried out.
The DIN 1630 ST52.4 seamless steel pipe is straightened and then transferred to the flaw detector by the conveyor for flaw detection test. After labeling and specification arrangement, it is placed in the warehouse.
The outer diameter of DIN 1630 ST52.4 seamless steel pipe is generally greater than 32mm and the wall thickness is 2.5-200mm. The outer diameter and wall thickness of cold-rolled DIN 1630 ST52.4 seamless steel pipe can reach 6mm and 0.25mm respectively. The outer diameter of thin-walled steel pipe can reach 5mm and the wall thickness is less than 0.25mm. The dimension precision of cold-rolled DIN 1630 ST52.4 seamless steel pipe is higher than that of hot-rolled DIN 1630 ST52.4 seamless steel pipe.
