Industry

Rail & Transportation manufacturing

Source welded, machined and cast components for rolling stock and rail infrastructure from manufacturers in Türkiye — built to rail welding and quality standards.

Typical volumes
Small to medium series
Welding certification
EN 15085
Quality system
ISO 22163 (IRIS)
Approval
First article inspection

Overview

Rail components must last decades under vibration, fatigue and weather. Typical parts include welded bogie and car-body sub-assemblies, machined brackets and housings, castings and forgings for running gear, and interior and cabinet parts. Buyers usually require welding certification to EN 15085 and, increasingly, an ISO 22163 (IRIS) quality system.

Türkiye manufactures locomotives, metro vehicles, trams and freight wagons, with rail production concentrated around Eskişehir, Sakarya and Ankara and a supporting base of welding, machining and fabrication suppliers.

On Metraxio you describe the part, attach drawings and state material, quantity and certifications. The platform structures the requirement and shows which facilities are a technical fit before quotes are requested.

Rail buyers usually plan long product lifecycles, so spare-part availability and repeatable quality across batches matter as much as the first delivery. State the expected service life, welding class and documentation you need so facilities can be assessed against them.

Typical parts & components

  • Welded bogie frames and car-body sub-assemblies
  • Machined brackets, housings and mounting parts
  • Cast and forged running-gear components
  • Sheet-metal cabinets, covers and interior parts
  • Aluminium extrusions for car bodies and interiors
  • Brake and coupling components
  • Track and infrastructure fastening parts

The processes, materials and requirements below are an editorial reference of what is typical for rail & transportation programs — not a statement about facilities in the Metraxio network.

Common manufacturing processes

Typical materials & grades

Certifications & compliance

What buyers in this industry commonly ask suppliers for. Exact requirements depend on the program, customer and part.

Supplier certifications

  • ISO 22163 Common

    Rail quality system (IRIS) expected by many OEMs.

  • ISO 3834 Typically required

    Welding quality system for welded components.

  • ISO 9001 Common

    Baseline quality system for lower-tier parts.

  • ISO 14001 Sometimes requested

    Requested by some rolling-stock manufacturers.

Standards & regulations

  • EN 10204 Type 3.1 Typically required

    Material certificate for metallic raw material.

  • ISO 2768 Common

    General tolerances on drawings.

  • REACH Common

    Substance compliance for parts sold in the EU.

Quality & documentation

  • Welding certified to EN 15085 at the required certification level.
  • First article inspection (FAI) and dimensional reports.
  • Material certificates to EN 10204 3.1.
  • Fire-safety compliance for interior materials where applicable.
  • Traceability of welds, materials and batches.

Typical tolerances & surfaces

  • Welded structures: tolerances per the drawing and ISO 13920 classes.
  • Machined interfaces: typically ±0.02–0.05 mm.
  • Weld quality levels are defined per EN ISO 5817 on the drawing.
  • Painted parts: coating system and thickness per the customer specification.

Sourcing from Türkiye

Türkiye combines a deep contract-manufacturing base with short routes into Europe. Industrial goods move between Türkiye and the EU under the customs union, so buyers typically avoid EU import duties on qualifying parts.

  • Many European destinations can be reached by road within several days; actual transit depends on origin, destination, customs handling and cargo.
  • Common delivery terms are EXW, FCA and DAP; Metraxio keeps the agreed Incoterm attached to the quotation and order.
  • Rail welding work usually requires the EN 15085 certificate level to match the classification of the weld on the drawing.

How Metraxio qualifies suppliers

Every request is checked against each facility's structured profile before any supplier is invited.

  • Hard criteria: the required process (e.g. welding or CNC machining), the specified material and grade, and certifications such as ISO 22163 or ISO 3834.
  • Missing data is not a rejection. If a facility profile does not yet state something, the result is "Needs More Information" rather than "Not Qualified".
  • No match yet? You can continue with Managed Sourcing and the Metraxio team runs supplier discovery for you.
  • Facility identities stay anonymous during the technical assessment.

Example project

How a typical request moves through Metraxio

50 welded steel brackets for a bogie — S355 — EN 15085 — DAP.

  • The buyer uploads drawings for welded and machined brackets with weld classes on the drawing.
  • Metraxio structures the requirement: welding, CNC machining, S355 steel, ISO 3834 and DAP delivery.
  • The fit assessment shows which facilities are qualified, which need more information and which do not match.
  • The buyer invites qualified facilities to a Supplier RFQ, or hands the job to Managed Sourcing.
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Frequently asked questions

What is EN 15085?

The European standard for welding of railway vehicles and components. Suppliers are certified at a level that matches the safety classification of the welds they produce.

Is ISO 22163 (IRIS) required?

Many rolling-stock manufacturers expect it from direct suppliers. For lower-tier parts ISO 9001 with EN 15085 welding certification is often sufficient.

Can suppliers handle aluminium car-body parts?

Some can. Aluminium welding and large extrusions need specific equipment, so material and process are assessed as part of your requirement.

Which documentation is typical?

FAI reports, EN 10204 3.1 material certificates, weld documentation and NDT reports where specified.

Are supplier names visible during the assessment?

No. Facilities are shown anonymously during the technical assessment. Identities are shared as the engagement progresses.

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Describe your rail & transportation part, attach drawings and see which facilities are a technical fit before you request quotes.