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Xiamen Bestlink Factory Co., Ltd.

Rod, Drill Rod, Extension Rod manufacturer / supplier in China, offering T38 Thread Extension Drilling Rod for Drilling Rocks, T38 T45 T51 Retrac Thread Button Bits, Ql40 SD4 Ql50 SD5 Ql60 SD6 Ql80 SD8 DTH Bits for Hammer and so on.

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Supplier Homepage Product Top hammer drilling tools extension rod T38 Thread Extension Drilling Rod for Drilling Rocks

T38 Thread Extension Drilling Rod for Drilling Rocks

FOB Price: US $13.2-84.3 / Piece
Min. Order: 50 Pieces
Min. Order FOB Price
50 Pieces US $13.2-84.3/ Piece
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Production Capacity: 50000PCS/Month
Transport Package: Woonden Box
Payment Terms: L/C, T/T, Money Gram, Western Union

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Basic Info
  • Model NO.: T38
  • Length: 3m
  • Material: High Manganese Steel
  • Precision: Normal Precision
  • Automatic Grade: Manual
  • Layout: Vertical
  • Number of Shaft: No
  • Brand: Bestlink
  • Specification: CE
  • HS Code: 72288000
  • Certification: CE
  • Usage: Mining and Quarrying
  • Controlling Mode: Artificial
  • Hole Diameter: <50mm
  • Structure: Deep Hole Drilling
  • Condition: New
  • MOQ: 50PCS
  • Trademark: BESTLINK
  • Origin: Xiamen
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.
Specifications:
roduct NameSizeSpecificationLength
R25 RodHex25R25-Hex25-R25610mm, 915mm, 1220mm, 1525mm,1830mm,2435mm, 3050mm, 3660mm
R32-Hex25-R251830mm,2130mm,2475mm,2795mm,3090mm,3700mm
Hex28R32-Hex28-R253090mm, 3700mm
R38-Hex28-R25
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-Hex32-R324305mm
Hex35R38-Hex35-R323090mm,3700mm,4305mm,4915mm,5525mm
T38-Hex35-R323090mm,3700mm,4305mm,4915mm,5525mm,6135mm
T38-Hex35-R32 MF-rod3090mm,3700mm,4305mm,4915mm,5525mm,6140mm
RD39R38-RD39-R324305mm
T38-RD39-R324305mm,4915mm,5525mm,6135mm


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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