其他的尺寸和规格，我厂可以根据客户的需要订做。

  Our factory can be customized according to the needs of other sizes and specifications.

  工艺：烧结、电镀。

  Process: sintering, electroplating.

  绳索取芯钻探是一种不提钻而由钻杆内捞取岩心的先进钻进方法，主要用于地质勘探。

  Rope core drilling is a drilling and drilling method by advanced drill rods up core, mainly used for geological exploration.