Extension rod, other names are Extension drill steel, Extension drill rod, and Extension steel, M/F rod ( Speed rod ) , Produce Hexagonal and round cross sections, 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. With the longer steel tending to be larger in diameter, conventional.
we are able to supply full range of extension rods in different lengths with various threads shown as below.
Thread size: R25, R28, R32, R38, T38, T45, T51.
Rod size: Round 32, Round 39, Round 46, Round 52, Length: 915mm to 5450mm.
Rod size: Hex 25, Hex 28, Hex 32, Hex 35, Length: 610 mm to 6400mm.
Drilling Hole Range
R25, R28, R32
R28, R32, R38
R28, R32, R38, T38
1 37/64～2 1/2
R32, R38, T38
R32, R38, T38
1 3/4～2 1/2
R38, T38, T45
2 1/4～3 1/2
T38, T45, T51
How to order?
Length + Thread + Body Shape and Diameter
1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
2. Can I expect a quality products?
A: Yes. mature production technology ensuring the quality satisfy international request.
3. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from ourwebsite for a better understanding.
4. Fast delivery time:
A: Usually it takes 25 days for production.only 3 or 5 days if we have stock of your request size.
5. Shipping way:
A: Sample order: we suggest Courier express delivery such as DHL/UPS/TNT/FEDEX or by air
Bulk order: by air or by sea we suggest.
6. Competitive price:
A:KINGDRILLING factory can supply you the lowest price due to direct sale to customers without distributor!