The manufacturing history of stainless steel seamless pipes epitomizes the evolution of precision machining. In the early 20th century, the Mannesmann brothers' hot piercing method initiated industrial production, yet early products suffered from ±1 mm wall thickness tolerances, limiting use to low-pressure steam pipelines. The 1950s cold rolling breakthrough redefined industry standa... https://www.sinosteel-pipe.com/en/blog-5581883437491190.html