• Model NO.：Drill Pipe
• Section Shape：Round
• Pipe Type：API Pipe
• Transport Package：Steel Frame
• Specification：4 - 20 inch
• Trademark：ZS
• Origin：Henan
• Production Capacity：2000piece,Month

Product nameDrill pipeMaterialE75, X95, G105, S135Model size2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2", 6 5/8"Length5.5-13.7mConnect threadNC26, NC31, NC40, NC50, etc API standard threadPackagingin bundle, steel frame
Heavy Weight Drill Pipe (short for HWDP) is the industry standard for an intermediate weight drill stem member and is available in standard, spiraled and non-magnetic designs making it useful in a number of applications. It has drill pipe dimensions for easier handling. Heavy weight drill pipe utilizes a center upset or wear pad to increase tube life, reduce hole drag and minimize differential sticking problems. is an intermediate weight drill stem component which is used in conjunction with the drill pipe and drill collars.
Features of Heavy Weight Drill Pipe
Extra-length tool joints provide ample space to recut the connections, reduce the wear rate on the OD and extend service life. 
The center upset protects the tube from OD wear by keeping the tube away from the hole wall, while at the same time reducing the risk of differential sticking. 
The API boreback box stress relief feature is standard for the box connection on 4" Heavy Weight Drill Pipe and larger, helping to extend the service life of the connection. 
Cold rolling the thread roots on all Heavy Weight Drill Pipe connections increases the connection's ability to resist fatigue cracking. 
Heavy Weight Drill Pipe can be picked up with the drill pipe elevators, for fast and efficient handling on the rig floor.
 
 

When you make an order about the oil drill pipe, Please inform us following information when you send the RFQ

OD size, wall thicknedd, length, the connect thread, the steel grade, special request.