Recently, Sinan, Guizhou province, two massive objects appeared on the Wujiang River Bridge project —— 31 Rotary drilling rig SR460 and a Boulder. SR460 as Asia's largest Rotary drilling rig, 14 meters long and 6.5 metres wide, 32 metres high, known as the behemoth is well deserved, just a piece of stone the "giant" compared to SR460 it?
"This is not a normal piece of stone. "Beijing Han Lusheng machine service engineer says," SR460 in driving out this stone diameter of 2.5 meters, 0.7 meters high, on top of it, is enough to lay down three people, though not the highest in the world, but in the machine industry is one of the best. "
According to Han Lusheng introduction, core dug up in the piling process of Rotary drilling rig is a common thing, but is not so large, so full of stones. "If you want to dig up cores, not just luck, also depends on the quality and level of hand operation of the machine, machine quality no, not dig into the core at all. In the process of improving core speed too fast cores to fall, so it not just in the giant core to dig. "
"It is currently the largest dug out of the rock core, became one of the industry's record. "Han Lusheng said.
Han Lusheng pride is justified, as Asia's largest Rotary drilling rig, SR460 came to Sinan greatly improves the construction efficiency, manual pile each pile to two months time, SR460 can average more than 30 hours into a pile. Now the appearance of the stone once again demonstrates SR460 high capacity and high quality.
Stone dug out, caused a stir at the site, project managers, clients, construction workers gathered to look at amazed at and jostle for a photo with stone. Take a look at SR460, a look at Boulder, a customer praise: "only SR460 can put out such a big stone. "
At present, this stone has returned to Beijing, placed in the pile of Beijing nankou industrial park for people to visit.