Different SizeDrilling Rods -MF drill rod /taper drill rod /thread drill rod drill tools

Punch Hole Extension Drill Rods supplier are made by hollow drill steel; there are two shapes of extension rods,round type and hexagonal type, 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.
Usually for R32-R(T)38 Thread Drilling 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)Steel grade:Male-Male Rod,MF 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

(4)Length:0.4-6.4m
(5)package:in wooden case or in bundles
(6)productivity:10000pcs/month

he information you may like to know before order:

1). Methods of Payment:

   T/T (Telegraphic Transfer) or Western Union or L/C at sight

2). Handling time for an order

   Based on order quantity, normally it takes 15 days for production.

  Only 2 or 3 days if we have stock on your request size.

3). Shipping way

  Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air

  Bulk order: we suggest by air or by sea.

4). Quality Control

  We have our own experienced QC.

  There will be strict inspection and testing for every order before shipping out.