T38 T45 T51 Rock Drill Extension Drill Steel Rod

Product Description

 Extension rods are one major spare part in terms of drill application area, there are two shapes of extension rods, one is round type, another one is hexagonal type.

    But all extension rods are threaded and made by hollow drill steels, this means usually extension rods are hollow.This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. Two ends threads can be used for connecting couplings, shanks, couplings or bits. Typically two ends of extension rods are male, while sometime one end is male and another one is female, then we call it M/F rod. We need couplings to connect extension rods, while for M/F rods, because one end is female, so couplings are not necessary.

Drill Rod Specifications:

thread: R22 R25 R28 R32 T38 T45 T51 T60
rod type: hex or round(plain)
length:280mm-6400mm

Product Name:	Extension Drill Steel Rod
Description:	rock drilling rod Extension rods are made by hollow drill steels; there are two shapes of extension rods, round type and hexagonal type.
Material:	Alloy steel bar
MOQ:	No MOQ required for testing and trial order
Steel grade	Male-Male Rod, MF Rod
Thread type	R22,R25,R28,R32,R38,T38,T45,T51
Diameter	25mm-76mm
Length	400mm-6000mm