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Ditch Witch Drilling Rods

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ZLCONN Ditch Witch Drilling Rods

HDD Drill Rods also named as HDD drill pipes play a significant role in all HDD drilling, regardless type of rock, hole depth or HDD Machine.

The key features of a high quality HDD tube are durability, accuracy and manageability. 

ZLCONN has HDD drill rods for Ditch Witch HDD Machine with several different thickness designs for each diameter, made from different grade steels for selection. So, in practice of field drilling, under different condition, there may be in need of different kinds of drill rods for particular application. For example, the thicker ones with general high quality grade steel for drilling hole of average depth, such as blasting holes; and the thinner ones with better grade steel for drilling hole of very deep, such as drilling for ground thermal. Moreover, ZLCONN’s HDD drill rods are also well heat-treated, precision manufactured, and friction-welded. 

ZLCONN Ditch Witch Drilling Rods Parameters

Product codePipe body OD
wall thickness
working length
Thread typeTool joint OD
Tool joint inside diameter of the pin end
Pin connection length
GradeDrill pipe torsional strength
Drill pipe tensile strength
Tool Joint and body torsional strength ratioMinimum bend radius
AngleBend slope ratio
Part Number
JT920/JT921(One piece upsetted)1.6610.2366.6DW1.411.7440.3542.240Z140224230480.51027.412.91001003
JT1720(One piece upsetted)2.1260.2569.8DW1.692.3620.6502.913Z140517843320.611318.615.21003001
JT2020/JT20(One piece upsetted)2.1260.29510.0DW1.942.6380.7482.953Z140614848940.671318.615.21003003
JT25,JT30(One piece upsetted)2.3740.2959.8DW2.112.7500.8273.335Z140806255570.671467.713.61004017
JT2720(One piece upsetted)2.3740.2959.8DW1.942.5980.6692.953Z140629955570.521467.713.61004034
JT25/JT2720M1/3020M1(One piece upsetted)2.3740.3359.8DW2.112.8110.7483.335Z1401024161780.671467.713.61004021
JT4020(One piece upsetted)2.8740.39414.8DW2.43.1260.9843.917Z1401049588410.471779.616.91006003
JT4020M1(One piece upsetted)2.8740.41314.8DW2.593.3461.1813.598Z1401398092030.61779.616.91006019
JT7020/8020(Rotary friction welding)3.50.36814.8DW3.274.0001.3785.217S13520003100610.62157.913.81009010


ZLCONN Ditch Witch Drilling Rods Advantages:

1.ZLCONN Ditch Witch Drilling Rods body: cold draw seamless pipe . so the pipe have the accurate size , good centralizer. 
2. ZLCONN Ditch Witch Drilling Rods material: The same grade as Sandvik, and our HDD Drill Rods are made of high-quality structural alloy steel, and after a special heat treatment process, they can meet the requirements of excavating harder rock layers and have longer service life.
3.ZLCONN Ditch Witch Drilling Rods thread connector: Heat and Nitrogen treatment , so the pipe is more durable and easier to load and unload .
4. ZLCONN Ditch Witch Drilling Rods feature: The drill rods adopt advanced thread manufacturing technology and advanced surface treatment technology , and are manufactured according to precise tolerances . They have the characteristics of tight connection , good energy transmission effect , strong wear resistance and easy disassembly. 5.ZLCONN HDD Machine Quality Control: All the drill rods are strictly controlled to ensure that they have a satisfactory high quality.

ZLCONN Ditch Witch Drilling Rods Mechanical property test results 



TO Chose the Right HDD Drill Rods

HDD drill rods (also called as drill tubes or drill pipes) are the mechanism to transmit impact force and rotation torque to DTH hammers and bits, as well as offer pass for the air flow.

In principle, the lighter the rod is, the better it is for the drilling operation. So a thinner one is always preferable than a thicker one if other parameters were the same. While in the mean time, the yield strength and the tensile strength must also be taken into accounts, which means relatively rod wall thickness would be needed to obtain enough strength. Of course, once the thickness is rigidly requested as thin as possible to minimize the drill string weight, there is also another method to get optimum drill tubes that using better grade steels.