China Wholesale 4 Inch Rock Drill Bit Factory – Bench and long-hole drilling ST58 (2 1/4″) – LYNE

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.

mm

in

Front No Size

Gauge No Size

Type

Front

Gauge

Button bit

89

3 1/2”

6×12

8×12

35º

4

-

4.1

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

89

3 1/2”

6×12

8×12

35º

4

-

4.1

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

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.