R32/T38 12 Feets drill bit extension rod 3660mm Hex35 MM Drifting Drill Steel Extension Rod

R32/T38 12 Feets 3660mm Hex35 MM Drifting Drill Steel Extension Rod

Description:

Drill Steel Hex rod of rock drill bits, It is common practice to bump up the drive end of drifting drill steel for added strength at the rock drill end to accommodate larger diameter and shank adapters. Drill steel is available in many standard lengths to match the drill feeds on a multitude of available drifting jumbos. Since the coupling does not enter the hole, a bit diameter closer to the steel diameter can be used.This enhances flushing and hole accuracy.

Drill bits, Couplings, Shank Rods and Tunnel Rods. Rod lengths 2440mm to 6435mm, (8’-21’)in R25, R28,R35 bit end threads with
standard shank end thread types. Hexagon body of H25-H35 and Round 39. Male/Female Tunnelling Rods are also available on 35mm
Hexagon and 39mm Round.

Hexagon, Drifting Drill Rods Hex 35
• The cross sectional dimension of material is measured across the flat
• Cross sections are more rigid, heavier & transfer energy more efficiently
• Reduces the annuls in the drill hole for better flushing
• Smaller space combined with the corners of the steel create turbulence in the hole
• Keeps the heavier cuttings moving, especially with horizontal holes
• The rigidity of the cross section makes it possible to use a larger thread

Specification:

Production Process:

1. Raw material 2. CNC milling and proprietary heat treatment process 3. Inspection 4. Package.

Competitive Advantage:
High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance.

The information you may like to know before order:

1. Methods of Payment:

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

2. Handling time for an order

Based on order quantity, normally it takes 25 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.

5. After Services:

a. Our sales team will response for your question within 24 hours (Holidays Excluded)

b. Technical Support will be available at any time

c. Free replacement will be provided once the failure confirmed caused by our product quality

Company Information: