In the excavation work, because there is no circular network, there is only one passage in the roadway called single head. It needs to enter the wind and wind, and dust and gun smoke will be generated during the excavation process. Therefore, without effective ventilation, It is difficult to ensure the safety of production. Therefore, the special ventilation measures taken in this area are called local ventilation.
Local ventilation methods are:
First, use local fan fan ventilation;
2. Using a high-speed jet of compressed air or high-pressure water to drive the ejector of the surrounding air for local ventilation;
3. Using the total pressure difference of the mine and guiding the airflow with the air duct and the wind wall for local ventilation;
4. Drilling and ventilation. After drilling through the upper and middle sections, use the total pressure difference or local fan ventilation.
CNC machining components/parts
Nanpi Jiantong Hardware Manufacturing Co., Ltd. was established in 2008. We have always maintained an earnest and responsible attitude to produce a wide range of high quality and precision components in many materials including Steel, Aluminum, Copper alloys and Plastics. Our company was ISO 9001-2015 certified and we are continuously upgrading all our processes to the most modern and efficient systems. We keep using the finest technology, machining equipment, experienced skill and strict quality assurance system to ensure your complete satisfaction.
Our precision machinery, perfect manufacturing technology, high-class quality and strong design teams will always work together with you openly, energetically and responsibly.
We look forward to cooperating with you and enjoying mutually beneficial and growing business.
Material: stainless 303,304,316,430, aluminum 6061, copper
High control ability:
(1) Precision reach 0.005 mm
(2) Center of a circle 0.003 mm
(3) Coaxial 0.003 mm
Roughness outside dimension: from 2mm to 200mm
Features: Machinery component
-optics
-medical
-motor shaft
IT application
-nuts
-handle
-thrumscrew
Cnc Turning Parts,Cnc Machine Parts,Custom Cnc Machining,Cnc Maching Parts
Nanpi Jian Tong Hardware Manufacturing Co., Ltd. , https://www.jiantongstamping.com