Bench and long-hole drilling ST58 (2 1/4″)

Rock drilling tools include: drill bit,drill rod, shank and coupling. The piston of drill rig directly impacts the shank, makes impact power reach the bit through rod by the form of stress wave, so as to work on the breakage of rock. The primary breaking way is impacting while the secondary is cutting; both are with high drilling efficiency. Usually the land surface of the earth is covered with loose, unconsolidated material such as soil, clay, silt, sand, gravel and boulders, which varies in depth from a few centimeters to hundreds of meters.Use concentric system can drill this complex formation very well.The systems are available through the whole product range the smallest being for 114 mm (4 1/2″) casing and largest size available at the moment is for 1220 mm (48″) casing.

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Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod.
High Frequency Induction is a process where only the thread ends of the rod are hardened to lengthen thread life.
Our comprehensive range of bench and production rock drilling tools includes everything from 1” rope thread equipment all the way up to T60 thread equipment, Many customers say that our rods, tubes and button bits are the best on the market today. Let’s just say they will improve productivity considerably.

Bench and long-hole drilling ST58 (2 1/4″)

Bits

Diameter

Buttons,mm

Angle

Flushing hole

Weight approx kg

Part No.

Front

No Size

Gauge

No Size

Type

Front

Gauge

Button bit

Bench and long-hole drilling ST58 (2 1/4″)

3 1/2”

6×12

8×12

Button bit

35º

4.1

1432-89ST58-612/812-45-41

3 1/2”

6×12

8×12

Button bit

35º

4.1

1432-89ST58-612/812-45-51

Button bit

Button bit, Heavy Duty
	89	3 1/2”	6×12	8×14	35º	2	-	4.5	1432-89ST58-612/814-45-41
	89	3 1/2”	6×12	8×14	35º	2	-	4.5	1432-89ST58-612/814-45-51

Reaming bit, ST58
	152	6”	6×14	8×14	35º	4	-	13.0	1441-152ST58-614/814-45-41

Tubes	Length		Diameter		Weight approx kg	Part No.
	mm	ft/in	mm	inch
Drill tube, ST58－Round76－ST58
	1525	5＇	76	3”	33.2	24G76-ST58/76-1525-23
	1830	6＇	76	3”	41.0	24G76-ST58/76-1830-23

FAQ

Q2: Are your products high quality ?
Yes .Our customers made the test reports proved that.If you need more information,please contact us.

Q3: What kind of payment terms do you offer and what is your best payment terms?
We offer different payment terms, including T/T, D/A, D/P, L/C and O/A, etc.
Our best payment terms is 120 days after shipping date for our distributors and sole distributors.

Q4:Do you offer warranty on your products?
Yes, for different products we offer different warranty that cover all manufacturing defects in materials and workmanship.
The longest period of warranty is 2 years after shipping date.

Q5: Do you offer OEM service?
Yes, we can offer OEM service if you have regular requirement.

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