T38 MF Rod and T38 MM Rod
T38 drill rod is a critical tool in rock drilling and mineral extraction. It is often used in conjunction with drill bits, shank adapters, and drilling rigs for the extraction of underground resources such as minerals, oil, natural gas, or groundwater, as well as for geological exploration.
Specification Selection
Specific applications require corresponding rig models, hence demanding matching drill rod specifications. For example:
- In underground tunneling projects, Atlas 281, K111 rigs, or Sandvik DD2710 rigs are commonly used, which require T38-1220, T38-1525, or T38-1830 drill rods;
- In underground mining environments, Simba 1254 or Simba 1354 rigs typically use MF-type T38-915, T38-1220, T38-1525, or T38-1830 drill rods;
- For tunnel and hydropower station construction, commonly used rig models such as Atlas Copco Boomer 282 and Boomer XE3 require four types of extension rods: T38H35R32-5525, 4915, 6135, and 6400.
Classification Overview
T38 drill rods are mainly divided into extension drill rods (also called MM rods) and speed drill rods (or MF rods). Both are designed based on the T38 thread standard, with key differences in their connection methods and functions:
T38 MM Drill Rod: This is a standard T38 threaded drill rod where “MM” stands for “Male-Male”, meaning both ends of the rod feature external threads. One end connects to the shank adapter, and the other end connects to the drill bit for rock drilling operations. To achieve greater drilling depth, a coupling sleeve must first be connected before adding another drill rod.
T38 MF Drill Rod: “MF” denotes “Male-Female”, meaning one end has an external thread while the other has an internal thread. This design allows another drill rod to be connected directly without a coupling sleeve, significantly saving operation time and labor costs.
Introduction to T38 Drill Rod
T38 drill rod specifically refers to a drill rod with T38 thread connections, a special type of steel rod designed for drilling operations, particularly in mining and construction. “T38” indicates the type and size of the threads used to connect drill bits or other drilling tools to the drill pipe, and it is one of the common thread specifications in the drilling industry. This type of drill rod is generally made of high-strength alloy steel to withstand various complex geological conditions and demanding working environments.
