Widely used for water wells, mining, geothermal environmental & exploration drilling etc
Usually 2-wings drag bit, 3-wings drag bit, 4-wings drag bit optional.
Shapes can do chevron & step as requested.
Sizes: 3 3/4", 3.7/8", 4", 41/4", 55/8 ", 47/8", 6", 7.3/8", 4.3/4",5.1/8", 5.5/8", 5.7/8", 6.1/4", 6.3/4", 6.5/8" 7.3/8" 9.7/8",11.1/2" etc as requested.
Our standard type already exported to USA, Australia, and Japan etc. more than 30 countries.
Non-standard type can produce as Picture or Drawings.
Should you have any interests and need more information, Please feel free to contact.
