Frequently Asked Questions

If your questions aren’t answered here, please contact us.


You have "Standard" and "Wolfram" tungsten options. What is the difference and why does Wolfram cost much more?

All DGP tungsten is high-quality tungsten that comes with material certifications and MSDS sheets to prove it. We proudly stand behind all have confidence in every piece of tungsten that we sell.

Wolfram tungsten, manufactured in Germany, is the top-of-the line of tungsten. It is the Porsche of the industry. So while others tungsten we carry could be considered a Ford F-150 (Silverado for you Chevy die-hards) in that it is a consistent, reliable & quality tungsten, the Wolfram tungsten is held to the most stringent of standards. That is why you often see Wolfram tungsten offered at what can be considered a “premium price”.

The benefits of Wolfram tungsten?

  • Reliable arc-striking
  • Low burn-off rate
  • Highest quality of arc
  • 35% less power consumption
  • 40% prolonged service life
  • 50% less set-up costs
  • 50% less gas consumption
  • 100% reproducible results

Get complete information here

What is E3 Tungsten?

What E3 is seems to be is a bit of a mystery. E3 tungsten is a Tri-Mix imitation manufactured in China.  However, it has a purple band, which according to the AWS is 3% Thoriated tungsten. It is often offered as an alternative to 2% Thoriated.  However, any claims of it being “required” because 2% Thoriated is being discontinued is incorrect.

Is 2% Thoriated Tungsten being discontinued as some competitive manufacturers claim?

No, 2% Thoriated Tungsten is still being produced and is still the most used tungsten on the planet.

Where does Diamond Ground Products tungsten come from?

Diamond Ground Products has 3 major suppliers of quality tungsten:

  • Sylvania / GTP® – Made in the USA
  • Wolfram Industries® – Made in Germany
  • Plansee® – Made in Austria

Does Diamond Ground Products tungsten come with material certifications?

Yes, all DGP tungsten – regardless of the supplier – comes with both material certifications and safety data sheets (SDS) upon request. We believe transparency in this regard is one of the many ways in which we earn a customer’s trust.

We believe transparency in this regard is one of the many ways in which we earn a customers trust.

What makes Diamond Ground products pre-ground Tungsten Electrodes different from other providers?

Quality & experience. DGP professionally CNC grinds our tungsten to the strictest tolerances on the finest equipment in the industry. Furthermore, DGP was founded in 1992 to specialize in tungsten & tungsten preparation.

We provide the highest quality tungsten electrodes at a fair price and offer decades of experience in the subject matter when you need it.

Is Multi-Strike® or similar tungsten marketed as “non-thoriated tungsten” the same as Diamond Ground Products Tri-Mix® Tungsten?

No, these are all Tri-Mix copies that are made in China. You can only get Tri-Mix tungsten from Diamond Ground Products and our distributors.

If you’re ever not sure what you are buying or where it is coming from, simply ask for material certifications. If the company won’t give you them, you may want to avoid them.


Where are Diamond Ground Products grinders made?

We have designed and built our tungsten grinders at our factory in Newbury Park, California since 1992. Since we are the manufacturer we are in complete control of their quality and continued innovation. This also ensures that spare parts and domestic support are little more than a phone call away.

How do the hand-held grinders compare to Diamond Ground Products grinders?

Most hand-held grinders on the market are good as disposable “hobby” type grinders. Diamond Ground Products grinders are professional quality and designed for continuous use in professional environments.

Does Diamond Ground Products take trade-ins in exchange for DGP grinders?

Yes, if you have a grinder you are not happy with – whether it is running or not – give us a call for a no-obligation quote.

How do you know which Diamond Ground Products grinder is right for you?

Each grinder page on our site has a link to a “Compare Tungsten Grinders” overlay that will show you grinder differences in regard to features and benefits. However, the best way to figure out what is the best grinder for you is to simply give us a call. We’ll listen to your needs & your budget, and offer you the right grinder based on our expertise. Furthermore, we won’t sell you anything more than you need. If you can get by with a hand-held model, we’ll let you know before you ever have to tell us.

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