Advanced drill pipe production lines can transfer the welding parameters to the best position to ensure the quality of welding zone; the heat treatment process with the feature of internal and external cooling at the same time can make a more reliable and stable mechanical character. Application of automatic weight, length measurement and automatic spray records can ensure products' traceability. Application of thickening and heating lines and 1250 tons of upsetting machine can ensure the thickening size， tempering machine's advanced heat treatment process can ensure the pipe's mechanical character. Tube hydraulic straightening machine ensures the straightness and coaxiality of pipe body.

L'une des parties les plus importantes du train de forage, la tige de forage lestée est la section de transition entre la tige de forage ordinaire et le collier de forage. Elle peut efficacement soulager la concentration de stress dans la section de transition du collier de forage et de la tige de forage pendant la combinaison, et fournir le poids sur la perceuse. Et peut réduire efficacement la zone de connexion du train de tiges et de la paroi de forage et le taux d'usure du diamètre extérieur.

L'un des composants les plus importants du train de forage a pour fonction de fournir une pression de forage au trépan de forage et d'augmenter la rigidité du train de forage

Using to projects of mine blasting, water well drilling, geothermal well drilling, pipe-shed support drilling, coal mining and non-ferrous mental mining and so on.

Geological drill pipe is applicable for geographical, hydrographical, coal mining, terrestrial heat and engineering drilling. The main products include: Φ42, Φ50, Φ60, Φ63.5. The major technical indexes of these seamless steel pipes are in compliance with international standard strictly.

Complete range of specifications: Φ68, Φ78, Φ105, Φ121，Drill joints, reducer union, lock joints, oil drill pipe joints, crossover coupling blank joints.