China Wholesale Rock Drill Head Factory – Bench and long-hole drilling ST58 (2 1/4″) – LYNE
China Wholesale Rock Drill Head Factory – Bench and long-hole drilling ST58 (2 1/4″) – LYNE Detail:
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.
Product detail pictures:

Related Product Guide:
Our enterprise since its inception, constantly regards product good quality as organization life, constantly improve production technology, strengthen merchandise high quality and continuously strengthen enterprise total good quality administration, in strict accordance with all the national standard ISO 9001:2000 for China Wholesale Rock Drill Head Factory – Bench and long-hole drilling ST58 (2 1/4″) – LYNE , The product will supply to all over the world, such as: Mombasa, Benin, European, Strict quality control is executed in each link of the whole production process.We sincerely hope to establish the friendly and mutual-beneficial cooperation with you. Based on high quality products and perfect pre-sales /after-sales service is our idea, some clients had cooperated with us for more than 5 years.

As an international trading company, we have numerous partners, but about your company, I just want to say, you are really good, wide range, good quality, reasonable prices, warm and thoughtful service, advanced technology and equipment and workers have professional training, feedback and product update is timely, in short, this is a very pleasant cooperation, and we look forward to the next cooperation!
