久久色亚洲-密乳av-99久久国产露脸精品吞精-永久在线高清av|www.51chahao.com

BGD-150S

BGD-150S

BGD-150S簡(jiǎn)介




The latest successfully developed pipe jacking equipment can be used for drilling in the strata such as mud-stone, hard rock, dense sand and gravel formations by percussion while rotating with auger transporting cuttings out of the hole mouth. 








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