We are offering articulated roof beam. Hinged articulated roof beam, it can be matched with various types of single metal strut stent, for inclined coal face support a high intensity beam corrosion in level and coal mine. Because the roof transport way above the top beam can...
We are offering articulated roof beam. (chinacoal08) specifications metal roof beam metallicity top beam, a kind of articulated roof beam product introduction metal roof beam metallicity top beam, a kind of articulated roof beam, with various...