China 4" 5" 6" 8" Flush Joint Water Well Casing Pipe

The products has two kinds of dry-type and wet-type, which has specifications of diameter 26mm, 28mm, 30mm, 38mm, 40mm, etc...As the manufacturer of coal drill rod we can supply you with all of your drilling needs. They are used for electric coal drill anchor bar, which is ideal and necessary tools for coal mine exploitation and shoring.
This product has two kinds: Solid and hollow, the specification is: 26, 28, 30, 38, 40 etc.
It is suitable for electric drill boring, is the ideal tool for coal mine.
Zize available:
"Q"Series: BQ, NQ, HQ, PQ
"W"Series: RW, EW, AW, BW, NW, HW
"WJ"Series: AWJ, BWJ, NWJ, KWJ, HWJ
Metric Series: 33, 42, 50

Drill Rod metric drill pipe