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T38 Male–Male Extension Rods (MMT38)

Product Type: T38 male–male extension rod for top hammer drilling.
Thread Configuration: T38 male threads at both ends.
Rod Connection: Two matching MMT38 rods are joined using a compatible T38 coupling sleeve.
Available Lengths: 18 options from 800 to 6400 mm.

Product Detail

General Introduction

Qstone MMT38 drill rods are T38 male–male extension rods for top hammer drilling. Each rod has a T38 male thread at both ends. To extend the drill string, use a compatible T38 coupling sleeve to join two matching rods.

The MMT38 series includes 18 lengths from 800 to 6400 mm, including the 3050 mm MMT38-3050 and the 3660 mm MMT38-3660. When replacing a rod, check the thread at both ends and confirm the rod length before ordering.

Application

Application	Typical Operation
Quarrying	Bench drilling and blast-hole drilling
Surface mining	Production blast-hole drilling
Construction	Blast-hole drilling for rock excavation

Select a rod length that fits your rig’s feed and rod handling system. For an existing T38 drill string, check the coupling sleeve and shank adapter as well as the rod.

Technical Specifications

Drilling Method: Top hammer drilling
Connection Type: Male–Male (MM)
Available Lengths: 800–6400 mm

Model	Thread Connection	Rod Length (mm)
MMT38-800	T38 Male × T38Male	800
MMT38-915	T38 Male × T38 Male	915
MMT38-1000	T38 Male × T38 Male	1000
MMT38-1220	T38 Male × T38 Male	1220
MMT38-1525	T38 Male × T38 Male	1525
MMT38-1830	T38 Male × T38 Male	1830
MMT38-1900	T38 Male × T38 Male	1900
MMT38-2435	T38 Male × T38 Male	2435
MMT38-2500	T38 Male × T38 Male	2500
MMT38-3050	T38 Male × T38 Male	3050
MMT38-3660	T38 Male × T38 Male	3660
MMT38-4265	T38 Male × T38 Male	4265
MMT38-4500	T38 Male × T38 Male	4500
MMT38-4875	T38 Male × T38 Male	4875
MMT38-5485	T38 Male × T38 Male	5485
MMT38-6000	T38 Male × T38 Male	6000
MMT38-6095	T38 Male × T38 Male	6095
MMT38-6400	T38 Male × T38 Male	6400

Compatible Tools

Tool	What to Check
T38 coupling sleeve	Use a compatible T38 coupling sleeve to join two MMT38 rods.
T38 shank adapter	Confirm the rock drill model and adapter part number. If the adapter has a male thread, check that the coupling sleeve matches both the adapter and the rod.
T38 threaded button bit	Match the bit’s T38 female thread to the rod’s T38 male end. Choose the bit diameter for your required hole size.

Request a Quote

Send us the rod length or MMT38 model number, required quantity, and rock drill model. If you’re replacing an existing rod, send clear photos of both ends and, if available, the coupling sleeve you use. If you also need T38 button bits, include the required bit diameter.

Email: info@q-stones.com
WhatsApp: +86 155 3856 5281

Related Products


Threaded Button Bits	Shank Adapter	Threaded rods	Coupling Sleeves

Previous : T38 Male–Female Extension Rods (MFT38)

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