"2005 to 2007, Huabei Oilfield pipeline for 3 years to ACTS of unlawful tying" Sword ", a total of 22 clean-up tie line 1901, in order to create good conditions for oil and gas normal delivery."

2005年到2007年，华北油田连续3年向管道违法占压行为“亮剑”，累计清理22条管线1901处占压，为油气正常输送创造良好条件。

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In general, a long distance oil transporting pipeline needs both feeding pumps (installed in the first pumping station) and main delivery pumps.

长距离输油管道一般需要给油泵(设在首站)和主输油泵两种。

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