EPG-J / EPG-W · 4/7 verified
Waterjet Garnet
Selected by nozzle bore and plate thickness — predictable edge quality
6080100120140P200EPG-W-63
View grades & specs →
EF GLOBAL CO., LTD · EST. 2006 · SHENZHEN / HONG KONG
EPOWDER® — partner-mine sourcing, dedicated grading lines, independent testing of every batch. Waterjet cutting, blasting, multi-media filtration and precision polishing: grades selected by process parameters, COA with every shipment.
PRODUCT LINES
Select by process: waterjet by nozzle bore and plate thickness, blasting by acceptance criteria, filtration by bed grading and backwash rate, polishing by substrate and target finish. Unmeasured numbers are never published.
Selected by nozzle bore and plate thickness — predictable edge quality
Selected by surface-preparation acceptance criteria, not just mesh
Seven grades from crystal and cover glass to TFT-LCD and silicon wafers
Same grade number as the powder — switch form without changing part numbers
High-density media at SG 4.0 — the heavy bottom layer that replaces silica sand
WHY BUYERS SWITCH
Abrasives rarely fail on the first delivery. They fail on the batch that ships after the mine, the screen or the packing line changed. We pin down each of those drift points and turn them into auditable procedure.
Retained samples for 12 months per lot. Re-test three months later and the result should match the COA — a promise we will write into a technical agreement.
Start a trial without committing a full container. Run the process first, discuss annual volume after.
Ask about PSD curves or machine parameters and you get direct answers — no relaying messages between sales and the factory.
Several partner sources run in parallel; a problem at one mine does not stop your delivery.
SOURCING
We do not own mines and we say so openly. Our value sits further down the line: dedicated grading, batch-by-batch verification, retained-sample traceability — from mine lot to your receiving dock, every step documented.
Every figure on this page comes from the COA and TDS shipped with the goods. Grades that are not measured are listed by code only.
TESTED & ACCEPTED AGAINST
TECHNICAL NOTES
Four notes covering what buyers ask us most: how mesh converts to microns, what actually sets the surface profile, why D100 moves yield more than D50, and how a multi-media bed is specified.
A mesh number only tells you the sieve cut. It says nothing about the distribution inside that cut, the grain shape, or how much oversize survived screening — which is why two suppliers can both ship “80 mesh” and cut very differently.
Read the note →Coating adhesion depends on two things the abrasive controls: cleanliness and profile. They are set by different parts of the specification, and pushing one usually costs you the other.
Read the note →Two polishing powders can share a D50 of 1.5 μm and behave nothing alike. One gives a clean mirror; the other produces scratches that only appear after the wipe. The difference lives in the coarse tail, and a D50-only specification hides it.
Read the note →Garnet is the heaviest media in the vessel, so it does two jobs at once: it filters the finest fraction and it holds the bed down. Get the grading or the backwash wrong and the bed mixes within a few cycles.
Read the note →Material, machine, target result: three lines are enough. Grade recommendation within 48 hours; standard grades in stock, samples in 3–5 working days.
Get a grade recommendation peter@ef-global.cn
