Main specification: 42/50/ 60/63.5 millimeters
Steel grade: DZ40、DZ50、DZ60、R780
Geological drill pipe is applicable for geographical, hydrographical, coal mining, terrestrial heat and engineering drilling. The major technical indexes of these seamless steel pipes are in compliance with international standard strictly. Our raw material are resourced from “Ansteel, Bao steel, Hengsteel, Baotousteel, Dayesteel ”, the five famous steel plants, which have all obtained the certification of ISO9001. The seamless steel pipes used for geographic drills, which are produced by our company all adopt the original ex-factory identifications.