高强度管—高抗挤套管：

该产品具有独特的变螺纹？头设计和复合管柱优化设计。在不改变钻开工艺的情况下，为解决油田盐岩层、盐膏层、射孔段的套管损坏防治难题，提供了全新可靠的技术途径，延长了套管使用寿命。已在中原大量油田使用。

High strength tube - Gao Kangji drive pipe:

this product has uniquely changes a thread? Design and graduated string optimization design. In does not change the bore holes in craft in the situation, to solve the oil field salt rock layer, the salty paste level, the perforation section drive pipe to damage against smelts the difficult problem, has provided the brand-new reliable technical way, lengthened the drive pipe service life. Already in the area south of Yellow River massive oil field use.