01 / 01 Press & cut
AISI-304, sheet to form.
CNC laser cutting, hydraulic press brake forming, automated punching. Every blank is traceable — sheet batch, press, operator, date — for warranty-long tracking.
About / Manufacturing
Press shop to
kitchen floor.
Keystonne is a genuinely indigenous manufacturer. Sheet stock arrives at one dock, finished Symphony lines leave at another. In between: CNC press, laser, TIG welds, polish, assembly, test, crate.
KEYSTONNE / ENGINEERED AS ONEFactory facts
- India · 120,000 sq ft works
- AISI-304 standard; specialist AISI-316L surfaces
- CNC laser + press brake in-house
- IoT telemetry per shipment
- ISO 9001:2015 certified
02 / 02 Weld & grind
TIG-welded, mirror-ground.
Every exposed seam is TIG-welded, then ground to 180/240/320 grit or mirror polish. No pitting, no discolouration, no food traps. We photograph every critical seam before it leaves the bench.
Gas leak test · 1.5× WP
Insulation · 500 VDC
Earth continuity · < 0.1Ω
Refrigerant hold · 24h
03 / 03 Assemble & test
Built, wired, pressure-tested.
Electrical, gas, plumbing all assembled in-house. Each machine is full-load tested — gas at 1.5× working pressure, electrical at insulation resistance, refrigeration at leak-down. Nothing leaves the factory untested.
04 / 04 Pack & ship
Crated for the kitchen, not the ocean.
Marine-grade crating with foam shock-isolation, climate desiccant and lift-point stickers. Symphony Monoblock ships already welded — we never weld on site.
Quality
Every machine
leaves under test.
0100%
Load-tested before crate
024h
Refrigerant leak-down hold
02×
Gas test over working pressure
02yr
Warranty, standard
Supply chain
A short,
verified chain.
Our bill of materials is radically shorter than most import-assembly competitors — which is why we can sign a 2-year warranty with confidence.
Jindal AISI-304
Primary stainless stock
Schneider / ABB
Contactors, starters
Embraco / Danfoss
Refrigeration compressors
Rational & Electrolux
Integrated combi ovens
Siemens
PLC & smart controls
Castolin
Welding consumables
Your next great kitchen starts here.
A conversation with an engineer.
A kitchen built around your ambition.