Common drill collars ,Spiral drill collars,Non-magnetic drill collars,Square drill collars,Integral heavy weight drill pipes,Stabilizers,Non-magnetic stabilizers,Square drill pipes,Hexagonal drill pipes,Adapters,Short listing connection
Contact Person : Sam Job Title : Business Manager Telephone : Fax Number : Address : Sanhe village Jiyuan, Henan Fax : 86-391-6763-188 Website : Visit website