Many idler pulleys are adopted in the structure of the new type chain pumping unit instead of girder pole in traditional connection mode, which can achieve a long stroke at work.

 
  • 摘要新型鏈條抽油機采用鏈條軌來(lái)代替傳統抽油機連桿的硬連接以滿(mǎn)足大沖程的工作要求。
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