The corrosion characteristic, causes and laws of pipe connection bands are extensively studied, which shows that a sharp change of stress is the critical factor for corrosion, especially axial stress.
笔者对接箍腐蚀的特点、原因和规律等问题开展了研究。结果表明，应力突变是发生腐蚀最关键的原因，特别是轴向应力占主导作用。
The spiral bands are basically equal in length to a condenser heat-exchange straight pipe and are inserted in the condenser straight pipe.
螺旋纽带与凝汽器换热直管道基本等长并插装在凝汽器直管道内。
The utility model relates to a special machine for printing blue bands on the two ends of a finished steel pipe.
本实用新型涉及一种在生产好的钢管两端打蓝带的专用机 械。
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