SFMC offers both integral and welding Heavy Weight Drill Pipe s.The integral HWDP is manufactured from one piece of AISI 4145Hsolid bar, fully heat treated, all physical properties conform toAPI Spec 7-1 latest edition. The welding HWDP is assembly by twopieces of tool joints and one piece of central pipe by inertialfriction welding. The tool joints are manufactured from AISI 4145Hor 4137H alloy steel and the central pipe is manufactured from AISI1340 alloy steel. The mechanical and chemical property of tooljoints and central pipe are conforming to API Spec7-1 latestedition.
SFMC HWDP, which provides the transition from drill collar todrill pipe, can easily solve problems arising in vertical holes insoft formation by replacing part of the drill collars.
l Reduced torquein high-rpm, deep drilling
l Less trip timeas compared to handling a long string of drill collars
l Fewertool-joint connection failures
l Easy inhandling and transporting to and from locations
l Helpful forkeeping direction of directional well
Hardbanding
HWDP’s wear resistance hardbanding is atandard on tool jointsconnections and central upset. Hardbanding is made by an automaticmachine after preheating the pipe and is followed by stressrelieving.
Standard bands
l One 4” wearband on both pin and box end, plus one 1” band on 18°shoulder ofbox
l Two 3” wearbands on central upsets
l Thehardbanding is completely flush on both tool joints and 1 /8”oversize on the central upset(fully flush on request)
The types of hardbanding include Iron-Matrix powder alloy,Tungsten Carbides Particle, Arnco 100XT, 300XT and TCS titanium
Internal plastic coating
SFMC HWDP could be coated internally with DPC, TK34 or TC2000 ascustomers’ request, which are able to prevent corrosion and extendusing time.
Initial make up and break out service
The controlled Make up and Break out procedures are consistentlyapplied to every tool joint and ensure the connections’ quality.Suitable dope and correct torque value are essential for the Makeup and Break out procedures. SFMC HWDP will supply perfect factorymake up and break out services if order and inquire.
Heavy Weight Drill Pipe
