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。

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While shielding set of processing technology mainly divided into next makings shear, rolled plate forming, welding, straightening round, test and assembly several processes.

而屏蔽套的加工工艺次要分为下料剪切、卷板成形、焊接、矫圆、试验和组装几个工序。

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Besides, assembly of complex joints, welding sequence, precision control technology and truss arching are researched.

并对复杂节点组装顺序、焊接顺序、精度控制技术和桁架起拱进行了研究。

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