1 - 9m Length Dth Drilling Machine Black Color Alloy Steel Material Dia 89mm

Product description
down th hole drill pipes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability, accuracy and manageability. DTH drill pipes are made of superior alloy and the both thread ends are friction welded to the seamless steel pipe.

Specification:

DTH Drill rod is made of high quality material detected by spectrograph, impact and tension test with fully digitized processing line introduced from Japan with integral heat treatment equipment.
Anti adhesion thread with nitrogen treatment on surface make it easier for handling.
Metallography detection, hardness test, magnaflux inspection, ultrasonic flaw detection, tensile test and impact test ensure products quality.
Length: 1, 000mm ~ 9, 000mm;
Diameter: 76mm (3") ~ 146mm (5-3/4");
Wall Thickness: 4mm ~ 8mm;
Connection Thread: 2 3/8", 2-7/8", 3-1/2", 4 1/2" API Reg. Or API IF Thread.