Fujian, China
Business Type:
Main Markets:
South America, Europe, Southeast Asia/ Mideast
Terms of Payment:
LC, T/T, Western Union
OEM/ODM Service
Sample Available
French / Russian / Spanish Speaker

Rod, Drill Rod, Extension Rod manufacturer / supplier in China, offering T38 Thread Extension Drilling Rod for Drilling Rocks, 9 7/8 " Oil Gas /Water Well Drill Tricone Bits, API-7-1 Standard Tricone Bits 6 1/2" and so on.

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T38 Thread Extension Drilling Rod for Drilling Rocks

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Min. Order / Reference FOB Price
50 Pieces US $13.2-84.3/ Piece
Production Capacity: 50000PCS/Month
Transport Package: Woonden Box
Payment Terms: L/C, T/T, Money Gram, Western Union
Certification: CE
Length: 3m
Usage: Mining and Quarrying
Material: High Manganese Steel
Controlling Mode: Artificial
Precision: Normal Precision

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Basic Info

Model NO.: T38
Hole Diameter: <50mm
Automatic Grade: Manual
Structure: Deep Hole Drilling
Layout: Vertical
Condition: New
Number of Shaft: No
Brand: Bestlink
Trademark: BESTLINK
Specification: CE
Origin: Xiamen
HS Code: 72288000

Product Description

For extension rod, there are two shapes, one is round type, another one is hexagonal type. All extension rod are threaded and made by hollow drill steels.
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.
roduct NameSizeSpecificationLength
R25 RodHex25R25-Hex25-R25610mm, 915mm, 1220mm, 1525mm,1830mm,2435mm, 3050mm, 3660mm
Hex28R32-Hex28-R253090mm, 3700mm
R28 RodHex28R32-Hex28-R282475mm,2590mm,3090mm,3700mm,4005mm,4305mm
R38-Hex28-R283090mm, 3700mm,4305mm
R32 RodHex32R32-Hex32-R322475mm,3090mm,3700mm,4305mm
R38-Hex32-R322475mm, 3090mm,3700mm,  4005mm,4305mm,   4610mm,4915mm
T38-Hex35-R32 MF-rod3090mm,3700mm,4305mm,4915mm,5525mm,6140mm

Male/Female (M/F) rod, speed rod
M/F drill steel is an alternative to couplings sleeves to include the female part of the threaded connection as an integral part of the drill steel. M/F 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. The advantages of drilling with M/F steel include: Easy handling, quicker uncoupling, tighter connections, the potential to drill straighter holes, and longer service life.
For Extension Rod and M/F steel process, the below two different types of heat treatment are used to strengthen high speed and powerful percussive drill string components to maximize their performance and reliability. Longer steel larger in diameter, conventional extension steel, Hexagonal and round cross sections are available.
- Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod.
- High Frequency Induction is a process where only the thread ends of the rod are hardened to lengthen thread life.

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