本公司拥有无缝钢管穿孔机组生产线两条，冷拔生产线六条，热轧生产线一条和焊接钢管生产线两条。
This company has seamless steel pipe perforation unit production line two, cold draw production line six, hot rolling production line with welded steel pipe production line two.
结果表明，空冷器管束在失效环境中发生了腐蚀减薄和穿孔泄漏的主要原因是电化学腐蚀、坑蚀、湍流腐蚀和冲蚀以及他们的交互作用引起的。
The corrosion failure of Ni-P alloy plating was mainly caused by pitting and the process can be divided into initial stage of corrosion, propagation stage and penetration stage of pitting.
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