line pipe steel 管线钢
pipe line steel 管线钢 ; 管道钢
HTP Line-pipe Steel HTP管线钢
Line pipe steel quality 线用钢品质
grade x line pipe steel x70级管线钢
pipe-line steel 管线钢
line steel pipe 管道钢管
It is found that the 'delamination always takes place along the centerline segregation band in pipe-line steel produced by continuous casting and then controlled rolling.
初步研究发现，对由连铸然后经控制轧制生产的管线钢层状撕裂几乎总是沿中心线偏析带发生。
The longitudinal cracks along bond line and the transverse cracks which cut across the weld metal cross section inside weld metal were formed, while X65 pipe line steel was welding.
X65管线钢在焊接过程中，内侧焊缝金属出现横向和纵向沿熔合线方向的裂纹，横向裂纹贯穿焊缝金属横截面。
Precision measuring hot rolling seamless steel pipe on line is a new technology to enhance quality of steel pipe.
热轧无缝钢管在线精度测量是近年来为了提高无缝钢管质量采取的一项新技术。
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