用化学药剂进行清洗时，请仔细确认清洗管线是否正常工作。另外，请注意不要将药液混入生产过滤水中。
When cleaning in chemical medicament, please examine whether the clean pipe line operates normally. In addition, be careful not to mix medicament solution into production filter water.
文章叙述了X80管线钢的化学成分、力学性能，并重点介绍了采用全自动焊和手工焊的焊接材料及焊接工艺。
This paper depicts the chemical composition, mechanical performance of X80 line pipes, giving emphasis to the welding materials and welding processes of fully automatic welding and manual welding.
对低碳钢管线用的氩弧焊丝的化学成分、机械性能、 可焊性能、 耐腐蚀性能进行对比分析，为合理选用焊丝提供了依据。
The chemical composition, mechanic property, weldability and corrosion resistance of argon arc welding wire for low carbon steel pipe line are contrasted and analyzed.
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