New High -efficency Full-Interlocking Kelly
Bar
新型高效全锁扣钻杆
New High
-efficency Full-Interlocking Kelly Bar is composed of interlocking Kelly bar and full
interlocking Kelly bar. It’s our leading
procucts.
The first section
is ordinary interlocking type,internal keys of inner sections are composed of
three groups of pressure stage. The outer keys are consisted of three- piece of three group of concave -
convex pressure stage.
This type kelly
bar is based on domestic rig configuration and condition demand, combined with
the home and abroad advanced manufacture technology, supporting domestic and
foreign rotary piling rig.Adope high-strength alloy steel and wear-resistant
alloy strip,take special process to the pressure point,kelly box head ,stop
ring and other wearing spares,to make sure the durability and reliability of
kelly bars.This kind of kelly bar is especially suitable for hard layer,frozen
layer,pebble layer.With the advantage of large downward transmission pressure
,small pressure loss,fast transmission speed.
This type Kelly
bar has applied for patent, the patent No. is 201420542676.9
新型高效全锁扣钻杆 是由普通机锁钻杆与全锁扣钻杆组合简化合成,为我公司的主打产品。
该钻杆第一节为普通机锁钻杆形式，里面几节内键是由三组加压台阶组成，外键由三段三组凹凸形式的加压台阶组成。
新型高效全锁扣钻杆 是根据国内钻机配置需要和工况需求，结合国外钻杆的加工设计工艺制造，配套于国内外各种大型旋挖钻机。该钻杆采用高强合金管材，耐磨合金键条，并对加压点，方头，挡环等易损件作特殊工艺处理，确保钻杆的可靠性和使用性。该钻杆适合于坚硬的岩石底层，冻土层，鹅软石层，钻杆的向下传递加压力大，压力损失小且传递速度快。
该钻杆已申请专利，专利号：201420542676.9 （新型高效耐用机锁钻杆）
