Carbon content is closely related with quality of the seamless steel tube.

碳含量的高低对无缝钢管的质量影响较大.

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Introduced hot - rolling seamless steel tube to produce development trend of the technology.

介绍了热轧无缝钢管生产技术的发展趋势.

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No quality round bloom , no quality seamless steel tube.

优质的圆管坯是生产高质量无缝钢管的前提.

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PROPORTIONAL CHARGE - OVER VALVE AND ITS APPLICATION TO φ140 SEAMLESS STEEL TUBE ROLLING MILL ( concluded )

换向-比例阀及其在φ140无缝钢管厂的应用 ( 续完 )

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The results showed, that tube was welding tube, it wast the seamless steel tube.

结果表明, 该钢管实为焊管, 不是技术规范所要求的无缝钢管.

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Seamless steel tube industry, the parties concerned regulation is what can have more effect, the iron?

无缝钢管业内各方关注的是,这次整治效果, 究竟能有多铁?

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