Drilling derricks and Rig Masts consist of a steel framework with a square or rectangular cross-section. Their purpose is to support the hoisting equipment and rack the tubulars while tripping pipe. The numbe.
[pdf] While we are familiar with most equipment manufacturers ranging from Terra, Zoomlion, TRACTO-TECHNIK, Ditch Witch, Huayuan, Goodeng Machine, Prime Drilling, Lianyungang Huanghai, Herrenknecht, CHTC JOVE, Drillto, Vermeer, XCMG, DW/TXS, Dilong and Toro, we prefer using the following four most often.
[pdf] Price-performance leaders include Jining Hengwang's crawler rig ($1,400 at volume) and Henan Ocean's diesel unit ($3,000 fixed price). For hard rock applications, Shandong Instanton's 5.0-rated rig provides premium capabilities at mid-range pricing.
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