News
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Nov / 27
2023
1. To provide the working crew an environment of fresh air. 2. To exhaust out fumes and gasses, that is injurious to health and explosive in nature. 3. To remove the drilling, mucking and blasting gasses emitted.
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Oct / 30
2023
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Oct / 30
2023
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Aug / 22
2023
Customized tunneling & mining ventilation ducts
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Jun / 22
2023
Cautions of using ventilation duct
Cautions of using ventilation duct: 1.The duct with different size should be selected according to the specific circumstances underground. 2.The duct should be hoisted to straight,and should make every ring forced uniformly to avoid the weight concentrated in part rings. 3.The duct should be regularly checked ,timely repair of damaged can prolong its use life.
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May / 22
2023
The Risk Of Fire In Tunnel Construction
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