36mm 7 tooth button bitThe selection of button bit is quite
concerning with the rock condtion. If you don't know how to choose
an applicable button bit, we strongely suggest you study the rock
conditon first.Below is the rock hardness grade list for your
reference.Rock GradeHardness LevelTypical RockF
gradeApplicable
button bitIThe hardestthe hardest and compact quartz, basalt and
other special hard rocksf=20The best qualityIIstrong hardvery hard
granite&quartz porphyry&siliceous schist, hard
quartz, the hardest sandstone &limenstone rockf=15The
best or
high end qualityIIIvery hardcompact granite, very hard
sandstone&limestone, quartz vein, hard conglomerate, very hard
iron oref=10High end or NormalIIIavery hardhard sandstone,
limestone, marble, dolomite, pyrite ore, not hard
granitef=8NormalIVhardnormal sandstone, iron
oref=6NormalIVahardSandy shale, shaly sandstonef=5NormalVmiddel
hardhard pelitopsammite, not hard sandstone and limestone,
soft conglomeratef=4Normal We can design
various Carbide Alloy Drill Bit according to your
requirements. Below is three differen quality button
bit. Product DescriptionWe can also design all
kinds of Alloy Bore Bit according to your requirements.Tapered
Button bit connection: Drill bit diameter
Taper(°) (mm)(in)281 3/326,7301
3/166,7321 1/46,7,11,12341 11/326,7,11,12351 3/86,7,11,12361
13/326,7,11,12381 1/26,7,11,12401 9/166,7,11,12411
5/86,7,11,12421 21/326,7,11,12431 11/166,7,11,12451 3/46,7,11,12501
31/326,7,11,12602 3/86,7,11,12 Thread button bit connection:
Drill bit diameterThread standard(mm)(in)351 3/8R22
R25 361 13/32R22 R25 R28381 1/2R22 R25 R28 R32431
11/16 R25 R28 R32451 3/4 R25 R28 R32481
7/8R32512R32642 1/2R38 T38763R38 T38 T45893 1/2R38 T38
T45 T511024T45 T51 ST58 SD601154 1/2T51 ST58 SD601275T51 ST58
SD601405 1/2T51 ST58 SD601526T51 ST58 SD60 we can
guarantee all our product:(1) Direct factory wholesale price, price
is cheaper than trading companies.(2) Strict Quality Control
Department, each piece bit need to be checked.(3) Accept custom
order. can special make for you.(4) Focus on the quality.We
seek long-term interest.(5)Welcome small orders, our Min Quantity
Order is 1 piece.(6) All bit are made by skilled workers and
advanced technology, we have more than 20 years' experiences,
so you must be satisfied with our super quality.FAQ Collection:Q1:
Are you factory or trade company?A1: We are factory. And we have
ourselves trading company.Q2: What the exactly address of your
factory?A2: Our factory is located in No.9 Kaixuan Ave
West,Economic Zone Quzhou, Zhejiang, ChinaQ3: Warranty terms of
your machine?A3: One year warranty for the machine and technical
support according to your needs.Q4: Will you provide some spare
parts of the machines?A4: Yes, of course.Q5: What about the voltage
of products? Can they be customized?A5: Our standard voltage is
380V, 50HZ, 3phase. The voltage can be customized according to your
equirement.Q6: Which payment term can you accept?A6: 30% T/T in
advanced, 70% T/T against the B/L copy.Q7: How long will you take
to arrange production?A7: we can delivery the normal goods within
7-15 days. Other nonstandard electrical items we will delivery
within 25-30 days.Q8: Can you accept OEM orders?A8: Yes, with
professional design team, OEM orders are highly welcome.Q9: Which
trade term can you accept?A9: Available trade terms: FOB, CIF, CFR,
EXW, CPT, etc. /* March 10, 2023 17:59:20
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a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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