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.

Made of AISI 4145H alloy steel; micro element is effectively controlled and heat treated along the whole length. To prtect the pipe and joint fom glling, the HWDP has center wear pad completes with hard banding on the upset section 18 deg or 90 deg.t ampered shoulder on tool joints are available

As an important part of drill string, drill collar can supply the drill bit and increase the rigidity of drill string

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.

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.

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