No.43,West Diming Street,Mudanjiang City, Mudanjiang, Heilongjiang
现在联系
详情
The wall thickness of heavy weight drill pipe is between drill pipe
and drill collar, its structure is similar with drill pipe. It is
made from premium alloyed steel. Its both tool joints and middle
upset are welded hardbands. Technical parameters meet with API
Spec**1 Standard.
TIANHE Drill Collar has been approved by the NS*1 certification
which is made from one-piece ***5H modified quenched and tempered
steel. It designed for tough drilling environments in vertical and
directional wells; for vertical wells,TIANHE HWDP is a transition
member;for directional holes it is a weight member and provides
additional stiffness to prevent bucking.
