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1·This article discussed the residual stress of the HU-METAL method formed large diameter longitudinal seam welded steel pipe.

对HU - METAL法卷制成型大直径直缝焊钢管残余应力进行了分析讨论。

2·A concrete gravity dam with 1 ~ 2 longitudinal seams and level keyways in seam surface was grouted when the concrete stays a stable temperature.

某大坝是混凝土重力坝，根据温控要求，坝体设置1 ~ 2条纵缝，缝面设置水平键槽，在坝体混凝土达到稳定温度后进行接缝灌浆。

3·Because of the much thick wall of large capacity boiler drum, the pressed and weld longitudinal seam is used to manufacture the drum shell ring.

由于大容量电站锅炉汽包的壁较厚，所以在汽包筒节制造时常采用压制成两个半圆瓦片再焊接而成的方法。

4·According to the domestic pipeline construction demand to the pipe, it is proposed to import a longitudinal seam SAW steel pipe mill as early as possible.

根据国内管道建设的需要，建议尽早引进一条直缝埋弧焊管机组。

5·During the modern longitudinal seam welded pipe production, the contacting pressure distribution between the roller and pipe is a very important parameter.

在现代的直缝焊管生产中，轧辊与管坯间的接触压力分布是一个非常重要的参数。

6·The company can also design and manufacture all kinds of specialized welding machines, such as automatic longitudinal seam welder, circular seam welder etc.

本公司还可为用户设计，生产各类纵缝自动焊机，环缝自动焊机等专用焊接设备。

7·Expanding and closing technique of core-die of longitudinal seam occlusion machine for automobile silencer and design calculation of such mechanics have been introduced.

介绍了汽车消声器纵缝咬边胀合技术及其咬边芯模机构的设计计算。

8·Burn through is the main problem of longitudinal seam welding of ultra-thin tube with small diameter. Assembly of the joint and welding technology are the key to solve the problem.

小直径超薄壁管纵缝焊接的主要问题是烧穿，解决这个问题的关键是严格控制焊接接头的装配质量及焊接工艺。

9·Based on the equivalent continuous model of tunnel and the limited influence area of longitudinal seam, the improved equivalent longitudinal continuous model of tunnel was put forward.

在隧道等效连续化模型基础上，认为环缝影响范围有限，尚未达到整环管片，对隧道纵向等效连续化模型进行深化。

10·The impacts of transverse and longitudinal shrinkage of welding seam on underframe positioning.

以及焊缝横向、纵向收缩对底架定位的影响。