1) pipes with small diameter and large wall-thickness
小径厚壁管
1.
Before installation,it has been discovered that the boiler water-wall pipes with small diameter and large wall-thickness of ultra-supercritical units in second-phase project for Huaneng Yuhuan Power Plant have comparatively serious unfused weld-joint defects,needing to carry out a large amount of inspection.
华能玉环电厂二期超超临界机组锅炉水冷壁小径厚壁管安装前发现焊缝存在较严重的未熔合缺陷,需进行大量检测。
2) Small-sized heavy-wall steel tube
小直径厚壁钢管
3) small-diameter and thick-wall pipe
小口径厚壁管
1.
The results show that with the advantages of large inspection range and high sensitivity,the γ-ray radiography is suitable for small-diameter and thick-wall pipes.
将γ射线透照工艺用于锅炉高温过热器安装焊口的探伤,并与X射线透照工艺对比,试验结果表明:对小口径厚壁管焊口采用γ射线透照具有检出范围大,灵敏度符合要求,缺陷检出率高等优点。
4) small diameter and thickness welded tube
小直径厚壁焊管
1.
The roller bend forming process of small diameter and thickness welded tube was simulated using nonlinear finite element software Msc.
Marc对小直径厚壁焊管的辊弯成型工艺过程进行了模拟。
5) Tube diameters/wall thickness
管径/壁厚
6) small-diameter and thick walled subsea pipe
小管径、厚管壁海底管道
1.
Three magnet systems, which magnetize the small-diameter and thick walled subsea pipe,are designed and tested.
分析了用MFL法检测管道缺陷时缺陷漏磁信号分辨率的特征,设计计算机控制的管道漏磁场分布测试系统检测、分析管道内漏磁场,优化设计用于小管径、厚管壁海底管道(273×12。
补充资料：小径
【诗文】：
环遶无十步，捷行财半之。
安西九千里，自有著鞭时。
【注释】：
【出处】：
环遶无十步，捷行财半之。
安西九千里，自有著鞭时。
【注释】：
【出处】：
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