• The center pipe is machined from 64mm tubing, and the sand filter is made from silica sand, cement, additive.

    根据不同技术标准筛选不同粒度的石英砂、油井水泥添加剂水按配比加工压制

    youdao

  • The center pipe is machined from 64mm tubing, and the sand filter is made from silica sand, cement, additive.

    根据不同技术标准筛选不同粒度的石英砂、油井水泥添加剂水按配比加工压制

    youdao

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