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西德曼乃斯曼公司早在70年代初就用连铸圆管坯代替轧制圆管坯生产无缝钢管。该公司连铸坯的碳偏析和纯洁度均优于轧制坯,连铸坯经连轧和张减后,其机械性能与轧制坯的机械性能相同,而且自1980年以来,用连铸坯生产无缝钢管的缺陷已低于由轧制坯所生产无缝钢管的缺陷。曼乃斯曼公司用连铸坯代替轧制坯后,管坯成本下降了25％左右,钢管生产成本下降了15％以上。
As early as the early 1970s, West Germany Mannheim company to produce seamless steel pipe with continuous casting round tube instead of rolling round tube. The company’s slab carbon segregation and purity are better than the rolling slab, the continuous casting slab and rolling reduction, the mechanical properties of the rolling billet the same mechanical properties, and since 1980, continuous casting Billet production of seamless steel pipe defects has been lower than the production of seamless steel pipe defects. Mannesmann company with slab instead of rolling slab, the cost of the tube decreased by about 25%, the cost of steel production decreased by 15% or more.