SEPPE

18/06/2026

Why is rotary kiln calcined bauxite more consistent?

Because the material is continuously turned, mixed, and heated more evenly during calcination. This helps create more stable density, lower performance variation, and better reliability for refractory, abrasive, and high-friction surface treatment applications.

In our latest article, we explain the difference between rotary kiln and shaft kiln calcination, and why kiln type matters for calcined bauxite performance.

Read more:
https://www.seppe.cn/Why-Rotary-Kiln-Calcined-Bauxite-Performs-More-Consistently-id04536745.html

18/06/2026

Happy Dragon Boat Festival from SEPPE!

Our team will be on holiday from June 19 to June 21, 2026, and we will be back to normal service on Monday, June 22. Replies may be a little slower during the holiday, and we appreciate your understanding.

Dragon boat racing, zongzi, and the spirit of unity are important parts of this traditional Chinese festival. We are glad to share this tradition with friends and partners around the world.

Wishing you health, peace, and good fortune.

16/06/2026

30/60 garnet blasting abrasive is widely used for steel blasting, rust removal, old coating removal, and surface preparation before painting or anti-corrosion coating.

It offers a good balance between fast cleaning speed and suitable surface profile, making it a practical choice for shipyards, storage tanks, pipelines, bridges, and steel structures.

Learn more about 30/60 garnet abrasive here:
https://www.seppecn.com/30-60-garnet-blasting-abrasive.html

11/06/2026

Black streaks on stainless steel after blasting are not always harmless dust.

They may indicate iron contamination from carbon steel grit, dirty blasting equipment, recycled media, or low-quality abrasive. If not identified early, the result can be rust spots, failed inspections, coating problems, and costly rework.

Learn how to identify the real cause and prevent black streaks on stainless steel.

Full article:
https://www.seppe.cn/black-streaks-on-stainless-steel-after-blasting.html

09/06/2026

You know your waterjet cuts metal, stone, and composites. But do you know how much garnet it actually uses — and what that really costs?

Typical consumption: 0.3–1.0 kg per minute. That’s 18–60 kg per hour.

But the real question isn’t “how much garnet?” It’s “what does it cost per meter of cutting?”

A cheaper price per ton often hides a higher cost per meter — if the garnet cuts slower, clogs your nozzle, or causes rework.

Here’s a quick reality check:

0.5 kg/min @ USD 0.35/kg → about USD 10.5 per hour

At 6 m/hour cutting speed → that’s ~USD 1.75 per meter

What affects consumption and cost?

1. Nozzle & mixing tube size
2. Pump pressure
3. Material thickness & cutting speed
4. Garnet mesh (80 mesh is standard)
5. Garnet quality – consistent sizing, low dust, low moisture, stable flow

Poor garnet causes unstable flow, clogging, slower cutting, faster nozzle wear — and higher cost per meter.

How to reduce total cost (not just consumption):

✅ Use the right mesh for your material
✅ Keep garnet dry
✅ Maintain nozzles and mixing tubes
✅ Choose consistent, low‑dust garnet

SEPPE SGA is alluvial river garnet – naturally formed, not crushed. That means fewer fines, low dust, stable flow, and lower total cutting cost.

📩 Need help calculating your real cost per meter? Email us at [email protected]

You can read the full article：
https://www.seppecn.com/how-much-garnet-does-a-waterjet-use.html

05/06/2026

Start by understanding what each abrasive is actually built for. No single media fits every job.

When choosing between glass beads, garnet, aluminum oxide, and steel grit, the right choice depends on:

Your base material

Rust level & profile required

Open nozzle vs. closed‑loop recycling

Safety & environmental rules

Here’s a quick breakdown:

Glass Beads – Spherical, gentle. Best for stainless steel, aluminum, molds, decorative finishes. Not for heavy rust or coating profiles.

Garnet – Angular, low dust, no free silica. The balanced choice for open‑nozzle blasting on ships, tanks, pipelines. Best overall for coating prep.

Aluminum Oxide – Hardest, fastest cutting. Great for thick mill scale and hardened steel. But more dust, faster nozzle wear. Choose when speed outweighs finish.

Steel Grit – Tough, recyclable (dozens of cycles). Ideal for blast rooms and automated wheel blasting. Avoid where iron contamination is a problem.

And cost? Unit price is easy – total cost is harder. Media consumption, labor hours, dust cleanup, and rework often matter more than the bag price.

Not sure which abrasive fits your operation? SEPPE supplies all four types.

Free sample or recommendation? Email us at [email protected]

Read the full guide:https://www.seppe.cn/how-to-choose-between-glass-beads-garnet-aluminum-oxide-steel-grit.html

03/06/2026

Because stainless steel isn't carbon steel. Surface contamination can ruin corrosion resistance and create costly appearance problems.

Steel grit risks iron contamination. Aluminum oxide over-cuts and warps thin materials.

Garnet solves all three:

▸Extremely low iron content — free iron typically

29/05/2026

GP, GL, or GH steel grit

Hardness numbers alone don’t tell the full story. On the job site, what really matters is breakdown rate, media life, surface finish, and equipment wear.

Here’s how the three common types compare:

▸ GP (tempered, 42–52 HRC) – Breaks down slowly, edges round off gradually. Longest life, lowest consumption. Ideal for general rust removal, thin parts, high‑volume production.

▸ GL (tempered, 56–60 HRC) – Sits between GP and GH. Cuts faster than GP, lasts longer than GH. Many foundries switch to GL to reduce media consumption and equipment wear.

▸ GH (non‑tempered, 60–66 HRC) – Fastest cutting. One pass often does what GP needs two or three. Trade‑off: faster breakdown, more dust, higher nozzle wear. Best for heavy scale, tight deadlines.

How to tell if you’ve chosen wrong?
Watch for: dust spikes, media consumption rising, inconsistent roughness, faster nozzle wear. If you see two of these, run a side‑by‑side test.

Read the full comparison:
https://www.seppe.cn/gp-vs-gl-vs-gh-steel-grit-which-one-fits-your-blasting-job.html

📩 Need help choosing GP, GL, or GH for your job? Email us at [email protected] – free samples available for on‑site testing.

27/05/2026

EID
MUBARAK

Wishing peace, prosperity and happiness
to all our partners and friends
celebrating Eid al-Adha.

Thank you for your trust and support.

25/05/2026

The hardest abrasive isn't always the most economical. Here's why.

Aluminum oxide (Mohs 9) cuts aggressively. But on thin steel or stainless, it can create a profile deeper than necessary — leading to rework or rejected parts.

Garnet (Mohs 7.5–8) is less aggressive, easier to control. It breaks down gradually, keeps dust levels stable, and leaves a consistent profile.

Where the real cost hides:

🔹 Dust & cleanup – Garnet generates less airborne dust → less cleanup time, better visibility.

🔹 Nozzle wear – Harder abrasives wear out nozzles faster. Garnet extends nozzle life.

🔹 Surface finish & rework – Garnet's uniform profile helps lower rework rates.

Which one for your operation?

If you want less dust, less cleanup, and less rework → Garnet

If you need aggressive cutting in a closed recycling system → Aluminum oxide

If you're blasting stainless steel or thin metal → Garnet

If you're doing open blasting (ship hulls, field tanks) → Garnet

Aluminum oxide can make sense in enclosed recycling systems. But for single‑use open blasting? Garnet's effective cost per part is typically lower.

Read the full article:
https://www.seppecn.com/garnet-vs-aluminum-oxide-for-blasting.html

Need help calculating your cost per part? Email us at [email protected]

Garnet Vs Aluminum Oxide for Blasting: Which Lowers Your Cost Per Part?, SGA Garnet, perfect alluvial pink garnet for waterjet cutting and blasting!