T38/T45 3660mm Mf Extension Rod for Top Hammer Drilling

• Customization: Available
• After-sales Service: 1year
• Warranty: 1year
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Standard: AISI, ASME, BS, ANSI, JIS, GB, GOST, ASTM, DIN
• Manufacturing Process: Forging
• Material: Alloy Steel
• Steel Grade: 23crni3mo,22simncrnimo
• Process: Carburized, CNC Manufactured
• Application: Mining and Quarry Drilling
• Thread Type: R32 T38 T45 T51 Gt60 Thread Drill Rod
• Use: Well Drilling
• Processing Type: Forging
• Transport Package: Wooden Box
• Specification: 700mm, 3050 mm, 3660mm, 4270mm
• Trademark: ProDrill
• Origin: Xiamen
• HS Code: 82071990
• Production Capacity: 5000PCS/Month
• Package Size: 3050.00cm * 100.00cm * 50.00cm
• Package Gross Weight: 50.000kg

Product Description

• Type: MF
• Thread: T38-T38
• Length: 700mm, 3050mm, 3660mm, 4270mm etc.
• Shape: Round

Type	Length
MF	700mm, 3050mm, 3660mm, 4270mm etc.

Drill Steel Round

It is common practice to bump up the drive end of drifting drill steel for added strength at the rock drill end to accommodate larger diameter and shank adapters. Drill steel of rock drilling tools is available in many standard lengths to match the drill feeds on a multitude of available drifting jumbos. A rock drill bit diameter closer to the steel diameter can be used since the coupling does not enter the hole, this enhances flushing and hole accuracy.

MF-T38 Extension Drill Rod

Male/Female (M/F) Steel

Male/Female drill steel provides more rigid connections and is easier to uncouple and handle. The service life also tends to be better than with separate couplings. This is fortunate because the coupling end cannot be replaced.

MF-T38 Extension Drill RodMF-T38 Extension Drill Rod

The advantages of drilling with M/F extension drill steel include: easy handling, quicker uncoupling, tighter connections and the

potential to drill straighter holes.

Extension Drill Rods

There are many types of drill rods, and the interface is different. The more commonly used ones are threaded drill rods. The application of these drill rods is quite extensive. The service life of these drill rods is also good and can be applied. For the mining of various types of mines, the actual working life of threaded drill rods is only tens of minutes to tens of hours due to the complicated stress state and harsh environment. With the development of high-power, high-frequency rock drilling machinery, it is imperative to improve the life of threaded drill rods. Haoer Machinery Manufacturing Consulting Tel:
Henan Huamei drill rod manufacturers introduce several methods to improve the life of threaded rods:
1. Continuous improvement from the structure of the rock drilling machine. For example, from the large piston of the pneumatic rock drill to the small diameter piston of the hydraulic rock drill, the rock drilling stress is changed while ensuring the rock drilling speed is continuously improved. Wave waveform and reduces the damage stress acting on the drill rod;
Mining Equipment
2. Improve the comprehensive mechanical properties of the drill rod material and the production technology level of the hollow steel, and minimize the internal and external defects of the drill rod to ensure the high quality and service life of the drill rod. Of course, the correct operation and management during rock drilling, the good cooperation between the front and the precision of their respective processing are also the basic conditions for ensuring the life of the drill rod.
The manufacturing process of the threaded drill rod is: selection of materials, selection of hollow steel production process and brazing process, and the brazing process mainly includes forging, machining, heat treatment, surface strengthening, anti-corrosion treatment and the like. The way to improve the life of threaded drill rods is mainly to comprehensively consider all the above aspects, focus on solving weak links, and continuously improve and perfect the process requirements.