Số Mô Hình
3-1/2", 4-1/2", 4-3/4", 4", 6", 6-1/2", 8", 8-1/2"
Type
drag bit chevron, non coring bit, step drag bit
Use
Well drilling, oil & gas drilling
Thread connection
3-1/2" API thread or as per request
suitable drilling formations
soft rocks, such as mud, clay etc..
parts
with tungsten carbide inserts, alloy steel
website
www.forsun-tools.com