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2021

How is the taper drill rod produced?

Material screening

Material detection

Inspection of overall dimension and inner hole

Water needle hole processing

Impact end machining

Collar processing

Inspection for extrusion quality of collar pier

Drill slightly cone machining

Impact end heat treatment of common finished brazing rod

Ordinary finished brazing heat treatment

High strength finished brazing heat treatment

Heat treatment quality inspection

Straightening

shot blasting

Anti-corrosion painting

Packaging

Lianhuashan drilling tools 50 years of history of China's drilling enterprises

Drilling tools for underground mining

Light-duty drilling tools for rock drills

Drilling tools for underground mining

Light-duty drilling tools for rock drills

RELATED INFORMATION

Lianhuashan Drilling Tools makes a debut in Moscow and reshapes the new benchmark for mining tools.

2025-04-23

Longteng Prosperity, Ruiqi Thousand Heavy.

2024-02-10

Auspicious flying, flowers quivering, happy New Year's Day; Firecrackers, gongs and drums, lanterns and colors;

2024-01-01

Lianhuashan drilling tools to participate in the Huludao City National Games basketball competition

2023-10-17

All colors welcome the National Day, pieces of red leaves dance autumn wind!

2023-10-01

Lianhuashan drilling tools participated in Kazakhstan International Mining Machinery and Construction Machinery Exhibition.

2023-09-22

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Address: Lianhua Mountain, Yangjiazhangzi Economic and Technological Development Zone, Huludao City, Liaoning Province, China
Telephone:0086-429-4428053 0086-429-4428052

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