STRATOSTEELIndustrial architect
EN / DESend RFQ

How we work

One PO. One owner. No gaps.

A heavy part crosses a foundry, a forge, a weld shop, machining, heat treatment and NDT. Buy those separately and every interface is your risk. Buy from us and the interfaces are ours. That is the whole model.

The one-contract model

What single responsibility means in practice.

One PO

You place one purchase order with Stratosteel s.r.o. for the finished, certified part. No sub-orders, no coordinating five vendors, no integration risk on your desk.

One quality owner

Stratosteel owns quality contractually, whichever plant or partner runs an operation. One inspection and test plan, one documentation package, one named quality owner per order.

One delivery owner

One confirmed date, one delivery, one name to call if anything moves. We tell you about a problem before you find it, with a proposed solution attached.

How the partner side is secured: the obligations in your PO are mirrored back-to-back in our contracts with the plants that run each operation, before we confirm a date. Where the network allows it, critical processes carry a second qualified route. If a plant fails mid-order, Stratosteel moves the work and carries the transfer. Invoicing follows agreed milestones and parts are insured in process and in transit.

Drawing to quote

Drawing in. Firm number in 3 to 7 working days.

DAY 0

You send drawings

PDF, STEP, DWG, DXF or IGES to rfq@stratosteel.com or the form. Quantity, material, tolerances, target date if you have them.

DAY 1

Engineer replies

Within 1 business day. Fit confirmed or declined, open questions asked. No automated acknowledgements pretending to be progress.

DAY 3 TO 7

Firm quote

Price, lead time, documentation scope, process route. A number you can take to your cost comparison, not a placeholder.

THEN

Pilot order

Start with one part number. Serial agreements and frameworks come after we have earned them with delivered parts.

Pilot order path

Test us small, scale on evidence.

The lowest-risk way to qualify a new heavy-parts supplier is not a 40-page questionnaire. It is one real part with a real deadline.

  • Pick 1 to 3 drawings, ideally a part that hurts today
  • Firm quote in 3 to 7 working days
  • Pilot order on one part number, full documentation included
  • Audit us in parallel or after, your choice
  • Scale to serial only when the parts prove it

NDA-first option

Confidential by default.

If your drawings cannot move without protection, we sign first. Your NDA template or ours. Our own customer names are handled the same way: every active OEM qualification track and the serial defence program are under NDA, and they stay there.

Send the NDA to rfq@stratosteel.com and drawings move the same week.

Buyer FAQ

The questions procurement actually asks.

Can you handle our tonnage and size?
Envelopes: steel castings to 50 t single piece via long-term EU foundry partners, ductile and grey iron on project basis. Open-die forgings on project basis via qualified EU partner presses, ESR special metallurgy available, machining integrated to 50 t. Weldments in-house to 10 t per EN ISO 3834-2, to 64 t x 45 m via certified partner under EN 1090-2 EXC2. Heavy machining to 50 t static and 30 t rotary at 0.03 to 0.05 mm form-position. If your part is outside these envelopes, we say so in the first reply.
Who owns quality when partner plants are involved?
Stratosteel does, contractually. One PO, one quality owner, regardless of which plant or partner makes the part. Inspection and test plan agreed before production. Partner capacity is secured back-to-back before we confirm a date.
What documentation comes with the parts?
EN 10204 3.1 material certificate as standard, 3.2 with third-party witness on request. Dimensional report with CMM trace on critical parts. NDT reports (UT, MPI, RT, LP) per specification. Heat treatment records. EU origin documentation for tenders.
Do you work under our NDA?
Yes. NDA-first is a normal path: your template or ours, signed before drawings move. Customer names on our side are disclosed the same way, under NDA only.
How fast is a first quote?
Reply within 1 business day from rfq@stratosteel.com. Firm quote in 3 to 7 working days for standard scope. Complex multi-process parts can take longer, and we tell you the date in the first reply.
What is your capacity commitment?
Pilot orders are scheduled within current capacity. Serial ramp is agreed per program before we commit, with dates in the contract, not in the brochure.
What is the cheapest way to test Stratosteel?
A pilot RFQ: 1 to 3 drawings, no commitment, firm number in 3 to 7 working days. Then a pilot order on one part number. You judge the quote first, the parts second, and only then talk frameworks.
Which sectors do you supply, and can you cover oil and gas, mining and energy?
Mining, energy (wind, hydro, power generation), oil and gas, marine, rail, defence, heavy equipment and forestry. The machines are the same across sectors; the proof differs per sector. Active: a 6-year serial weldment and machining program for a forestry equipment OEM, a serial defence program at 10 000+ units per year, and network castings running in mining and off-highway machines today. Steel castings to 50 t, weldments to 64 t x 45 m, heavy machining to 50 t, EU origin under one contract with EN 10204 3.1 documentation.

Start with one part.

1 to 3 drawings to rfq@stratosteel.com. Reply in 1 business day. Firm quote in 3 to 7 working days.

Send a pilot RFQSee the proof