For making rotary drill bits for coal and soft rock formations

Model No.: cement drill bits

Features: cement drill bits/tapered button bits/button bits/ rock drill bit/ drill bits/rock bits/sandvik/atlas copco bits/drilling bits

Model No.: glass drill bits

Features: top professional manufacturer 10 years
zzlongda glass drill bits
drill 4000-5000 holes
low cost ISO

Model No.: diamond drill bits

Features: top professional manufacturer 10 years
drilling bits for FUSHAN FZ100B machine
drill 4000-5000 holes
low cost ISO

Model No.: drill bits

Features: top professional manufacturer 10 years
best quality glass core bits
durable.drill 4000-5000 holes
low cost ISO.good results

Model No.: All types

Features: Tricone Rock roller bit
1)Standard:API$ISO
2)safe,reliable and easy
3)Best quality and best service
4)FOB$100~3000

Model No.: DNHX

Features: broach cutter
1.Hss cutting tool, high-performance high speed steel
2.stable clamping
3.stable cutting
4.surface treatment

Model No.: DNTX

Features: 1. geometry for ply-cutting
2. lower friction.
3. Reduced damage of tips and improved performance of ships removal.

Model No.: 6--25 inch

Features: 1.many good cutterds
2.suitable price
3.high quality

Model No.: 42mm-450mm

Features: 1.Diamond bits is applicable for broken hard rocks;
2.Over 24 years expeiences;
3.High quality best price;
4.Sell well.

Model No.: MABF

Features: Diamond Core Bits for General Purpose Masonry
specially designed barrel vents keep better cool and provides fast removal .

Model No.: 75L diamond core drilling bits

Features: top professional manufacturer
zzlongda diamond glass core drilling bit for glass drilling
drill 4000-5000 holes
low cost ISO

Model No.: 6"--28inch

Features: 1.have the large and have high quality and can supply you enough