2008年底,作为世界领先的钻进服务和产品提供商,美国宝长年(Boart Longyear)公司推出了新的地表勘探岩心钻机XF4200,其钻进深度为1200m(NQ钻杆),最大扭矩为6953N.m,绞车提升能力为9071kg。作为下一代地表岩心钻机,XF4200包含了一些以前从未有过的性能和安全特征。宝长年公司全 At the end of 2008, as the world’s leading drilling service and product provider, Boart Longyear Company introduced the XF4200, a new surface exploration drilling rig with a drilling depth of 1200m (NQ drill rod) and a maximum torque of 6953N .m, Winch lifting capacity of 9071kg. As the next generation of surface core drilling rigs, the XF4200 incorporates some of the performance and safety features never seen before. Bao long years of the company