Crack Reasons of ASTM A53 Seamless Steel Tube:
Firstly, most of the causes of pipe (circle) include internal cracks, inclusions, airbags, etc. The uneven structure of the pipeline is the cause. We should pay attention to the implementation of pipeline standards, and bar manufacturers with a certain scale will do so.


Secondly, the perforation temperature and technical adjustment should not be neglected. If the puncture temperature is low, improper regulation will lead to the tearing of internal capillary tissue.


Third, the final annealing temperature is appropriate. The heating temperature of perforation is 1180 ~ 1230 C, which is lower, that is, the temperature of carbon steel is 1230 - 1250. Furnace time generally exceeds 60 minutes