Industry

Marine & Shipbuilding manufacturing

Source corrosion-resistant machined, welded and cast components for shipbuilding and marine equipment from manufacturers in Türkiye — close to Europe’s shipyards.

Typical volumes
One-off to small series
Key materials
Duplex, 316L, bronze, 5083
Approval
Classification society
Certificates
EN 10204 3.1 / 3.2

Overview

Marine parts must withstand seawater, vibration and long service lives. Typical work includes stainless and bronze machined parts, welded steel and aluminium structures, propulsion and shafting components, deck equipment and piping parts. Classification society approval is often required for parts that affect vessel safety.

Türkiye has a major shipbuilding and yacht-building industry, concentrated around Tuzla, Yalova and Antalya, with suppliers for steel and aluminium fabrication, machining, casting and surface protection.

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.

Corrosion protection is decided early in marine sourcing: the choice between stainless, bronze, coated steel or aluminium determines which facilities and finishes fit. Stating the environment — immersed, splash zone or deck — helps separate suitable suppliers from general machine shops.

Typical parts & components

  • Shafts, couplings and propulsion components
  • Stainless and bronze fittings and valves
  • Welded steel and aluminium structures and foundations
  • Deck equipment, cleats and hardware
  • Pump and piping components
  • Machined housings and flanges
  • Yacht interior and exterior stainless parts

The processes, materials and requirements below are an editorial reference of what is typical for marine & shipbuilding 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 9001 Typically required

    Baseline quality system.

  • ISO 3834 Common

    Welding quality system for welded parts.

  • ISO 14001 Sometimes requested

    Requested by some shipyards.

Standards & regulations

  • EN 10204 Type 3.1 Typically required

    Material certificate for metallic raw material.

  • EN 10204 Type 3.2 Common

    Witnessed certificate for class-approved parts.

  • ISO 2768 Common

    General tolerances on drawings.

Quality & documentation

  • Classification society approval (e.g. DNV, Lloyd’s Register, Bureau Veritas) where required.
  • Material certificates to EN 10204 3.1, or 3.2 when witnessed by the class society.
  • Welding to qualified procedures with certified welders.
  • Corrosion protection and coating documentation.
  • Pressure testing for piping and fluid components.

Typical tolerances & surfaces

  • Machined shafts and bearing seats: typically ±0.01–0.03 mm.
  • Welded structures: tolerances per the drawing and ISO 13920.
  • Polished stainless yacht parts: surface finish and cosmetic standard agreed up front.
  • Flanges and piping: dimensions to the applicable piping standard.

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.
  • For class-approved parts, involve the classification society early so inspections and witnessed tests can be planned.

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. CNC machining or welding), the specified material and grade, and certifications such as 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

20 duplex stainless shafts — 2205 — EN 10204 3.2 — delivered DAP.

  • The buyer uploads drawings for pump shafts in duplex stainless steel.
  • Metraxio structures the requirement: CNC turning, grinding, stainless steel 2205, EN 10204 3.2 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.
Start a similar project

Frequently asked questions

Do parts need classification society approval?

Parts that affect vessel safety usually do. Equipment and yacht hardware often do not. State the requirement so it is assessed in your project.

Which stainless grades are common for marine use?

316L for general seawater exposure and duplex grades such as 2205 for higher strength and corrosion resistance.

Can suppliers weld aluminium for boats and yachts?

Some can. Aluminium welding needs specific equipment and qualifications, so process and material are assessed as part of your requirement.

Are one-off parts possible?

Yes. Many marine parts are made as single pieces or small batches for repairs and refits.

Are supplier names visible during the assessment?

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

Related industries

Start a Manufacturing Project

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