Serial · welded + machined
Forestry winch drivetrain
Welded, machined and assembled gear housing from a 6-year serial program. EN ISO 3834-2, EN 10204 3.1.
The model
We are the sales force of our plants.
We own no plants, on purpose. We run a certified European production network and carry the contract: one PO covers engineering, manufacture, verification and delivery. You sign one contract with us. The plants make the parts. They are ours by agreement and by standard, not by title. When they win steady work, you get stable capacity and one name that answers for all of it.
Operating company small. Network deep. That is the model, on purpose. Built by people who spent twenty years on the floor, and who still talk to buyers the way one engineer talks to another: drawing first, an honest yes or no, no theatre.
13
Partner plants in the network
6
Countries in the network
5
Slovak core plants, long-term agreements
200+
CNC, foundry and forge machines, network
30,000+ t
Network steel throughput, annually
143
People in the Slovak core plants (long-term agreements)
How the two counts fit together: the 5 Slovak core plants are counted separately from the 13 partner plants, so 18 production units in total. All of them run under long-term agreements, none of them is owned by Stratosteel, and the producing unit is named in your quote.
The product
ONE PO: a finished heavy part on one order.
You do not buy machine hours here. You buy a finished casting, forging, weldment or machined part, with its documentation, on one purchase order with one responsibility. Engineering, manufacture, verification and delivery are inside the order. Coordinating a foundry, a forge, a weld shop and a machine shop is our work, not yours.
48 h
First technical answer
3 to 7 days
Firm quote, unit confirmed
3.1 / 3.2
EN 10204 documentation
1
Contract, invoice, responsibility
Third party
Named per order, billed transparently
Start here
What do you buy?
Route yourself by part family. Each page states the envelope, the documentation and the proof for that family.
You buy
Welded structures
High-strength steel weldments, machined after welding. To 10 t at the Slovak core weld shop under EN ISO 3834-2, to 64 t x 45 m via certified partner. S690QL, S960QL, HARDOX.
You buy
Machined parts
Workpiece to 50 t static, 30 t rotary, form-position 0.03 to 0.05 mm. From your casting, forging, weldment or raw material. CMM report included.
You buy
Castings
Steel castings to 50 t single piece via long-term EU foundry partners. Delivered machined and documented, not raw. NDT scope agreed before pour.
You buy
Serial small parts
5-axis precision to IT6. A serial program at 10 000+ units per year runs today. CMM trace per batch.
Not sure which family your drawing is? Send it. An engineer routes it and replies usually in 1 business day, always within 48 hours.
Searching by problem, not by family: heavy machining, 50 t under one PO · machined parts, serial · steel castings 50 t · forgings · welded steel constructions
Active programs
Judged by repeat orders.
6 years serial
Forestry equipment OEM, Austria
Welded structures, machined frames, sub-assemblies. 600+ parts per machine, one contract. Name under NDA.
10 000+ units/yr
Serial defence program
Precision-machined components, 5-axis, CMM trace per batch. Running now. Name under NDA.
Network production
Major mining and construction OEM machines
Castings from our network run in major mining and construction OEM machines today. Network production, stated as exactly that.
Every claim on this site is labeled exactly what it is: direct program, network production, or qualification track. Full proof page →
Our work
Real parts, off the network floor.
Castings, weldments and machined parts we have delivered. Customer names stay under NDA. The parts do not.
Cast + machined
Cast then machined component
Steel casting finished to drawing on a rotary table. Network production. EN 10204 3.1 + dimensional report.
Heavy machining
Precision rotor shafts
Long shafts machined and finished. Form-position 0.03 to 0.05 mm. CMM report per batch.
5-axis · IT6
5-axis mould cavity
Large aluminium mould cavity, mirror finish, 5-axis machined to IT6.
Welded + machined
Heavy welded machine frame
Large welded steel machine frame, machined faces. EN ISO 3834-2.
Heavy machining
Large bored housing
Cylindrical housing line-bored on a horizontal mill. EN 10204 3.1 + dimensional report.
More parts, references and the audit process on the proof page →
Inside the network
Thirteen plants, six countries. One name answers.
Foundry
Steel pour
Steel castings to 50 t single piece via long-term EU foundry partners. NDT scope agreed before pour.
Weld shop
Certified welding
EN ISO 3834-2 at the Slovak core to 10 t, to 64 t x 45 m via certified partner. EN 1090-2 EXC3 held by the assigned fabricating unit.
Heavy machining
Horizontal boring mill
Workpieces to 50 t static, 30 t rotary. Form-position 0.03 to 0.05 mm.
Our films
Inside Stratosteel.
Real shop floors, real machines, real people. Not stock footage.
Walk the network
Don't take the website's word.
The Stratosteel Digital Expo is an industrial fair that never closes. Five halls by capability. Real machine floors on camera, not marketing pages. Book 15 minutes straight into the maker's calendar. Visitors free, business email, approved by a person within one business day.
The meeting is the product. Nothing else is for sale.
What we make
Four part families. Checkable envelopes.
Part family
Heavy weldments
to 64 t × 45 m
EN ISO 3834-2 at the Slovak core to 10 t. To 64 t x 45 m via certified partner, EN 1090-2 EXC3 held by the assigned fabricating unit.
Part family
Heavy machining
to 50 t
50 t static, 30 t rotary, 0.03 to 0.05 mm form-position. VTL ø 2 700 mm, deep drilling ø 400 x 6 000 mm.
Part family
Heavy castings
to 50 t
Steel castings to 50 t single piece via long-term EU foundry partners. Ductile and grey iron on project basis.
Part family
Open-die forgings
project basis
Open-die forgings on project basis via qualified EU partner presses, ESR special metallurgy available, machining integrated to 50 t.
Plus 5-axis precision (IT6) and quality & NDT (EN 10204 3.1).
FaXtory, the machine behind the product
One production system. Demonstrated envelopes on one screen.
FaXtory is our name for the certified partner network run as one production system. This sheet carries demonstrated numbers only, documentable on request. Contracted partner routes above these envelopes are qualified per project and quoted per part, not listed here. Family detail sits on the own pages.
| Heavy castings | to 50 t single piece, long-term EU foundry partners | EN 10204 3.1, NDT pre-agreed |
|---|---|---|
| Open-die forgings | project basis, qualified EU partner presses, machined to 50 t | EN 10204 3.1 |
| Heavy weldments | 10 t Slovak core (EN ISO 3834-2). Certified partner envelope to 64 t x 45 m, qualified per project (EN 1090-2 EXC3, certificate with the fabricating unit) | weld docs + EN 10204 3.1 |
| Heavy machining | 50 t static, 30 t rotary · envelope 9 × 3 × 2.5 m Slovak core, 13 500 × 4 000 × 3 500 mm network · VTL ø 2 700 mm · horizontal turning ø 3 000 × L 3 200 mm · deep drilling ø 400 × 6 000 mm · 0.03 to 0.05 mm form-position | CMM report |
| 5-axis precision | serial to IT6, a 10 000+ units per year program running | CMM trace per batch |
| Quality & NDT | UT, MT, PT in the network, RT via ISO 17025 lab · CMM dimensional | EN 10204 3.1, 3.2 on request |
| Series | 1 piece to 4 000 pieces per batch, serial programs running | CMM trace per batch |
| Certificates, entity level | ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, Stratosteel s.r.o., valid to 24.03.2028 | QMS-05-25-00, EMS-05-25-00 |
| Commercial | first technical answer 48 h, firm quote 3 to 7 working days, FCA / DAP, EUR | warranty 24 months on weldments |
One contract covers any combination, melt-and-pour origin stated in every quote, EU-only routes available on request. Russian and Belarusian material excluded across the whole chain. How we work →
Real machines
Real machines. Real tonnage. Real certifications.
Behind every Stratosteel contract is named, audit-able equipment. We do not hide behind marketing copy. Procurement teams that need verifiable capability scope get it here.
Heavy milling
TOS Kurim FUQ 150
Horizontal milling, envelope 9 x 3 x 2.5 m, workpieces to 50 t static. Form-position 0.03 to 0.05 mm.
Vertical turning
TDZ VLC 2500 ATC
Vertical turning to ø 2 700 mm, rings, flanges and housings, carousel to 15 t. Live tooling, one setup.
Deep drilling
GUANLU TSK 2120 x 6000
Deep drilling to dia 400 x 6000 mm. Long bores for shafts, cylinders and energy components.
Horizontal boring
TDZ HCB 110 CNC
Horizontal boring and milling of drums, housings and frames. Workpieces to 50 t static on floor plates.
5-axis
GROB G550
Horizontal 5-axis with rotary pallet automation, one of seven 5-axis centres (4x GROB, 3x Hermle). A 10 000+ units per year serial program to IT6 runs on this machine class today.
Quality
WENZEL LH 108 CMM
CMM dimensional verification. UT, MT and PT in scope, RT via an ISO 17025 accredited laboratory. EN 10204 3.1 standard, 3.2 on request.
Six of 200+ machines across the network's thirteen plants. Full machine list per plant is on the table in an audit. Audit us →
Industries
Same machines. Different proof per sector.
Mining
Crusher and wear parts. Network castings in the field today.
Energy: wind, hydro, power gen
Ductile iron structures, hydro and turbine-class rotors.
Marine
Propulsion and deck machinery part families ready.
Rail
Axles and bogie components. Live RFQ work.
Defence
Serial defence component program, 10 000+ units per year.
Heavy equipment + forestry
6 years of serial weldments for one OEM.
Oil & gas
Flanges, pipe and valve components. Machined to spec, EU-first network.
Test us small
One pilot RFQ. No commitment.
You do not need a supplier audit to find out if we are real. Pick 1 to 3 drawings, send them, get a firm number. Judge us on the quote first and the parts second.
STEP 1
Pick 1 to 3 drawings
A part that is late, badly priced, or hard to place. PDF, STEP, DWG, DXF or IGES.
STEP 2
Send to rfq@
Form below or rfq@stratosteel.com. NDA first if you prefer, signed before drawings move.
STEP 3
Reply in 1 business day
An engineer answers. Honest yes or no on fit, questions if the drawing needs them.
STEP 4
Firm number in 3 to 7 working days
Price, lead time, documentation scope. If we cannot make it competitively, we say so.
