Mine Airtight Door
1. Airtight door is made up of the flat steel plate,stiffened plates,ring beam and other combinations.
2. Door frame adopts channel steel, I-beam composite frame
3. Wedge-shaped wedge slide
4. Support by hinges with rolling bearing
Model MMB 1.4*1.8 ,
MMB means airtight door,
1.4 means net width through the cave (Or refers to the net width of door without frame) is 1400mm.
1.8 means net height through the cave (Or refers to the net height of door without frame) is 1800mm.
Product Specification / Models
Water-proof air-tight Model Drawing No.
Application / Models
underground outlet inlet lane and the main outlet inlet air lane between each contact, which is the substitute for all air door.
Contact person: joanna
Tel: +86-537-2902388 Fax: +86-537-2902388
Address : West of Zhixue Road,High-tech Zone,Jining City,Shandong Province,China
Shandong Dongda Group subordinate enterprises includes Shandong Kuangan electromechanical Co.,Ltd Jining Dongda electromechanical Co.Ltd,Jining Dongda Electric Co., Ltd .
Dongda Group is located in the "Hometown of Confucius and Mencius," the Jining City, Shandong Province. With registered capital of RMB 11.18 million and the area of 80,000 square meters, the group owns total assets of RMB 200 million .With strong technical force, adhere to the idea--- science and technology is the first productivity, quality is life, the existing staff more than 500 people. It has developed to a comprehensive company with annual production increased to billions.
Dongda Group has 10 series, more than 70 products. Including mines lifting equipment, transport equipment, communication signal equipment, personal-protective equipment, ventilation equipment, mining cleaning equipment, supporting equipment, drilling machines and accessories, mining pump, electrical equipment, lighting equipment ,rock drilling equipment and other products.
Now ,hundreds kinds of products have been exported to more than 60 Countries and regions. Such as USA, Australia, Russia, Canada, Middle East, Africa etc
Dongda Group has succeeded in passing a number of certification systems which are ISO9001, 2008 quality management system certification, CE certification ,Alibaba GIS certification, SGS certification (made in China) . With excellent quality and competitive price , Dongda group is to establish long-term, broader economic and trade cooperation and strategic partnership with a number of large state-owned enterprises and customers, and won the unanimous approval of them.