In 1993, Lianhuashan drilling tool was the first in China to introduce the overall carburizing production process of European thread drill rod, which made the quality of Chinese thread drill rod products achieve a qualitative leap.

In 1993, Lianhuashan drilling tool was the first in China to introduce the overall carburizing production process of European thread drill rod, which made the quality of Chinese thread drill rod products achieve a qualitative leap. As of 2021, Lianhuashan drilling tools have achieved production and sales of thread drill rod products for 20 consecutive years, and the export volume ranks first in the same industry in China.

1993In, Lianhuashan drilling tool was the first in China to introduce the overall carburizing production process of European thread drill rod, which made the quality of Chinese thread drill rod products achieve a qualitative leap. Cutoff2021In, Lianhuashan drilling tools have been continuously20Annual production and sales of thread drill rod products, the export volume ranks first in the same industry in China.

Taper drill rod overall carburizing process finished brazing rod, high-quality taper drill rod.

Lianhuashan drilling tools, founded in 1969, is the former China Ministry of Machinery Industry and the key unit of China Nonferrous Metals. It is a professional rock drilling tool manufacturing enterprise.

Taper drill rod overall carburizing process finished brazing rod, high-quality taper drill rod.

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