“China was once unable to make 17-meter-long steel pipes. Now, Beizhong Group has spent 13 years overcoming the technology monopoly, making the inner wall of domestically produced ultra-long ultra-high-pressure steel pipes as smooth as a mirror, and the price has dropped by 70%, completely breaking the 10-meter-long ‘dead line’ blockade of foreign companies.”

December 2025, Baotou, Inner Mongolia.

A severe cold of more than 20 degrees below zero enveloped this industrial city outside the Great Wall.

But in the production workshop of the Special Steel Division of Northern Heavy Industries Group, the steam is steaming and the machines are roaring.

The CNC machine tool is accurately processing a 17-meter-long steel pipe blank.

This steel pipe has to withstand a high pressure of 250 to 350 MPa and a high temperature of about 300 degrees Celsius, and must ensure that the length exceeds 17 meters without deformation.