Seamless thick-walled pipe uneven

Seamless thick-walled pipe uneven
1, in the seamless steel pipe perforation process, the extension coefficient is too large, the rolling speed is too high, smooth rolling.


2, stamping punch steel capillary instability, easily lead to uneven tail thickness.


3, seamless steel pipe sharp cut slope, elbow is too large, tube error in the hole larger, easily lead to uneven head tube thickness.


Thick-walled seamless steel pipe uneven effect
1, pay attention to the use of the state guide plate, increase guide plate bolt inspection efforts to reduce the seamless steel plate guide rolling amplitude, to ensure the stability of castings.


2, check the quality of seamless steel pipe to prevent pipe cutting, a substantial reduction, replacement or repair should be corrected through the center hole.