JINSHI DRILLTECH CO LTDJinshi Drilltech Co.,Ltd. was founded on 11th of November 1996 with a registered capital of 53 million CNY. The company
specializes in the development, production and sales of exploration drilling tools as well as providing drilling solutions and
services. Jinshi is a national advanced technology enterprise, one of the drafters of geological drilling tool standard of China,award of second prize of National Science and Technology Progress in China.




Jinshi plant covers an area of 51,800 square meters with over 360 employees and world class intelligent production line of diamond core drilling consumables. Jinshi possesses core technology of diamond tools and knowledge of deep hole drilling tools. A dedicated testing lab and strict adherence to the I S O 9 0 0 1 quality control system ensure every piece is qualified. Standard drilling units make hands-on experience in high efficiency drilling available to Jinshi. Jinshi takes drilling industry in China to a high speed train and makes us come into a high efficient and safety drilling expert.


Standard | OD (mm) | ID (mm) | Wall Thickness (mm) | TPI | Pin Thread Length(mm) | Weight (kg/m) |
BWL | 55.7 | 46.1 | 4.8 | 3.0 | 44.45 | 6.03 |
NWL | 70.5 | 60.3 | 5.1 | 3.0 | 44.45 | 8.08 |
HWL | 89.0 | 77.8 | 5.6 | 3.0 | 44.45 | 11.52 |
PWL | 114.3 | 101.9 | 6.2 | 2.5 | 63.50 | 16.53 |
SWL | 139.7 | 125.5 | 7.1 | 2.5 | 62.80 | 23.22 |
C series Rod parameter-geological steel pipe-entire length thermal treatment, NC lathe with former cutters | |||||
Spec. | Unit | BCB | NCB | HCB | PCB |
OD/ID | mm | 55.6/46 | 71/60 | 89/77.8 | 114.3/101.6 |
Thickness | mm | 4.8 | 5.5 | 5.6 | 6.35 |
Length | m | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 |
Weight | kg/m | 6.01 | 8.8 | 11.51 | 17.3 |
thread length | mm | 44.45 | 44.45 | 44.45 | 63.5 |
thread pitch | thread/inch | 3 | 3 | 3 | 2.5 |
box thread tooth height | mm | 0.76 | 0.76 | 0.76 | 1.17 |
pin thread tooth height | mm | 0.88 | 0.88 | 0.88 | 1.27 |
thread tooth angle | . | 29 | 29 | 29 | 29 |
tensile resistance(A series) | kn | 400 | 530 | 510 | 565 |
tensile resistance(B series) | kn | 450 | 615 | 625 | 660 |
bore depth | m | 1200 | 1000 | 900 | 800 |
RC series Rod parameter-geological steel pipe-entire length thermal treatment, NC lathe with former cutters | |||||
Spec. | Unit | BRC | NRC | HRC | PRC |
OD/ID | mm | 55.6/46 | 69.9/60.3 | 88.9/77.8 | 114.3/101.6 |
Length | m | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 |
Weight | kg/m | 6.01 | 8.8 | 11.51 | 17.3 |
thread length | mm | 42 | 42 | 41.91 | 63.5 |
thread pitch | thread/inch | 3 | 3 | 3 | 2.5 |
box thread tooth height | mm | 0.76 | 0.76 | 0.76 | 1.17 |
pin thread tooth height | mm | 0.88 | 0.88 | 0.88 | 1.27 |
thread tooth negative angle | . | 5 | 5 | 5 | 5 |
tensile resistance(A) | kn | 450 | 525 | 545 | 565 |
tensile resistance(B) | kn | 530 | 625.5 | 602 | 660 |
bore depth | m |
HW HWT Casing Casing pipe. Size HW, HWT,NW,NWT, NWA, BW, AW, PW,PWT
Casings are often used when there is need to stabilize the drill hole and protect it from leaking, collapsing or water-bearing stratum. Casings are flush joint type and are available in W and WT threads. W casing utilizes the DCDMA W thread form. WT casing is made with DCDMA tubing and tapered thread form.
W casing overview
W casings are made in DCDMA standards and are available in AW, BW, NW, NWA, HW, and PW standards.
Raw materials:
Tangshan Jinshi only choose the best steel tubes in the market to manufacture our rods and pipes. Spot check will be conducted after the steel tubes delivered to company. We will make sure the compositions and specifications match the inspection report form the suppliers.
Heat treatment control:
Heat treatment will greatly improve the material strength and increase the thread wear life of the rods and casings. We conduct either tru-wall or both ends heat treatment to the tube body. After heat treatment, strength, hardness, straightness and concentricity of the treated tubes will be tested in our lab.
Thread opening process:
Accuracy of threads will determine the use effects and life time of drill rod and casings.
CNC latches and form cutter are used in thread opening processing to minimize error made by anthropic factors.
Additional thread treatment:
Surface of the threads will be cleaned to remove burr adhered after threads are opened.
Afterwards, the tread surface will be phosphated to improve surface conditions.
Q series Rod parameter-geological steel pipe-entire length thermal treatment, NQ lathe with former cutters | |||||
Spec. | Unit | BQ | NQ | HQ | PQ |
OD/ID | mm | 55.6/46.1 | 69.9/60.3 | 88.9/77.8 | 114.3/102.1 |
Thickness | mm | 4.75 | 4.8 | 5.55 | 6.1 |
Length | m | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 |
Weight | kg/m | 6.01 | 8.8 | 11.51 | 17.3 |
thread length | mm | 44.45 | 44.45 | 44.45 | 63.5 |
thread pitch | thread/inch | 3 | 3 | 3 | 2.5 |
box thread tooth height | mm | 0.76 | 0.76 | 0.76 | 1.17 |
pin thread tooth height | mm | 0.88 | 0.88 | 0.88 | 1.27 |
thread tooth angle | . | 29 | 29 | 29 | 29 |
tensile resistance(A series) | kn | 400 | 530 | 510 | 565 |
tensile resistance(B series) | kn | 450 | 615 | 625 | 660 |
bore depth | m | 1200 | 1000 | 900 | 800 |

SIMILAR PRODUCTS

Both Ends Heat Treated
Non-standard also can be made as your demand

1. Professional Team & Experience:
2. World-Class Intelligent Facilities:
3. Selected High Quality Raw Materials:
are the best and largest raw material manufacturers in China.
4. Strict Physical/Chemical Testing Procedures:
5. Short Delivery Time:
6. Safe Package & Shipment:
7. Best After-Sale Service:



We are a manufacturer and our factory produces full line of diamond drilling tools & equipment.
3. If I will need to stay at your place for few days, is it possible to book the hotel for me?
It's always our pleasure to book a nice hotel for you.
4. What is your minimum order quantity?
Yes, put on your logo is available.
8. Is your price competitive?
Only good quality product we supply. Surely we will give you best factory price based on superior product and service.
9. May I know which payment will be accepted by your company?
We do 100%T/T before shipment, and 30% deposit paid by T/T, balance paid by L/C are available.
10.How can I get the after-service & quality guarantee?