The results show that the distributions of the surface heat fl ow density and temperature around tube billets are relative.
计算结果表明，管坯表面热流密度沿周向分布的不均匀性造成了管坯温度沿周向分布不均。
The world steel pipe market does not show a good situation but the horizontal continuous casting technology for tube billets has been successfully developed.
世界钢管市场并不景气。水平连铸的管坯生产技术已经成熟。
The world, steel pipe market does not show a good situation but the the horizontal continuous casting technology for tube billets has been successfully developed.
世界钢管市场并不景气。水平连铸的管坯生产技术已经成熟。
This paper analysed emphatically the surface qualities of HCC round billets of grade 20 made in Hengyang Steel Tube Plant and the control methods of it.
本文着重分析了衡阳钢管厂20钢水平连铸管坯的表面质量及现场控制方法。
The exterior quality of the hollow billets for indirect tube extrusion is presented.
挤压铝合金管材用空心铸块外观质量提出了要求。
The exterior quality of the hollow billets for indirect tube extrusion is presented.
挤压铝合金管材用空心铸块外观质量提出了要求。
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