Case

For 300 drill pipes of MMT38H35R32*4.305 and MF RD T45*1.525, it only took 20 days from purchasing raw materials, production and processing, quality testing, packing and warehousing.

The Micangshan Tunnel is currently using a full set of drilling tools from HZJX and rock drill accessories. Xintong three-arm jumbo (DW3-180) and XCMG iron-mounted three-arm jumbo (TZ3A) have been used before and after this construction site. Several domestic companies have been ...