China Drill Pipe Drill Steel Pipe Drilling Rod

Bestlink T45 Thread Extension Drill Rod for Drifting and TunnelingExtension rods are made by hollow drill steels. This hollow hole are usually named flushing hole, used for transmitting water or air during drilling.And the threads can be used for connecting couplings, shanks, couplings or bits.Body Type:
There are two shapes of extension rods, round type and hexagonal type.
Hexagon rods are more rigid, heavier and transfer energy more efficiently, while increasing flushing.
Round rods are generally lighter than hexagonal rods and are normally used in extension drilling applications.Thread Type:
Usually for extension rods, there are R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60 threads,
and different lengths of rods are available from 600mm to 6400mm usually.
(1) Type:Male-Male Rod, Male-Female Rod
(2)Thread:R22, R25, R28, R32, R38, T38, T45, T51,
(3)Rod size:hex. 22mm, hex. 25mm, hex. 28mm, hex. 32mm, hex. 35mm,
dia. 39mm, dia. 46mm. dia. 52mm
(3)Length:0.4m-6m
(4)Package:in wooden case or in bundles.
NameSizeSpecificationLengthR25 RodHex25R25-Hex25-R25610mm, 915mm, 1220mm, 1525mm,1830mm,2435mm, 3050mm, 3660mPower Tools mR32-Hex25-R251830mm,2130mm,2475mm,2795mm,3090mm,3700mmHex28R32-Hex28-R253090mm, 3700mmR38-Hex28-R25Magnetic Material R28 RodHex28R32-Hex28-R2824Smart Card & Card Reader 75mm,2590mm,3090mm,3700mm,4005mm,4305mmR38-Hex28-R283090mm, 3700mm,4305mmR32 RodHex32R32-Hex32-R322475mm,3090mm,3700mm,4305mmR38-Hex32-R322475mm, 3090mm,3700mm, 4005mm,4305mm, 4610mm,4915mmT38-Hex32-R324305mmHex35R38-Hex35-R323090mm,3700mm,4305mm,4915mm,5525mmTOther Bags & Cases 38-Hex35-R323090mm,3700mm,4305mm,4915mm,5525mm,6Weighing & Measuring Apparatus 135mmT38-Hex35-R32 MF-rod3090mm,3700mm,4305mm,4915mm,5525mm,6140mmRD39R38-RD39-R324305mmT38-RD39-R324305mm,4915mm,5525mm,6135mm