Defence and naval
On board, two sets of rules apply at once: those of the classification society and the customer’s specification. We supply piping material and components to drawing – with certification, traceability and acceptance notified in advance.
What we supply for it
Every part to your drawing, with material certificate and documentation.
Pipe spools (prefabricated piping assemblies) are piping sections…
Headers bring steam, water or gas together and distribute it again. We…
The plate in which the boiler tubes end
Bent tube runs that take up or give off heat
Boiler tubes rarely arrive on site in mill lengths. We supply them…
Special flanges, collars and pipe fittings to drawing and works…
Seamless and welded, seawater to steam, from stock or on call-off
Forged components to your drawing or specification
Typical materials
The grade follows medium, temperature and pressure. The list below is a selection, not a limitation – we supply the grade that design and specification call for. A data sheet exists for every grade.
Standards and codes
| Area | Code |
|---|---|
| Classification | DNV, Lloyd’s Register, Bureau Veritas, RINA, ABS or ClassNK – depending on the build specification |
| Flanges | DIN 86029 (PN 10) and DIN 86030 (PN 16) slip-on, DIN 86041 welding flange for tanks, sea chests and overboard connections |
| Seawater | CuNi 90/10: EN 12449 (CuNi10Fe1Mn, 2.0872) or DIN 86019 (CuNi10Fe1.6Mn, 2.1972) |
| Stainless | EN 10216-5 (seamless) or EN 10217-7 (welded): 1.4404, duplex 1.4462, super duplex 1.4410, 1.4547 |
| Welding | EN ISO 3834-2, procedure qualification to EN ISO 15614-1 (steel), for CuNi to EN ISO 15614-6 |
| Acceptance | EN 10204 3.2 with survey – to be notified before the base material is ordered |
| Export | Classification as a dual-use or military item – EU dual-use regulation (EU) 2021/821 or EU common military list, plus Austrian foreign trade and war material law, clarified per enquiry |
Typical tasks
Seawater systems
Cooling, ballast and fire mains run in CuNi 90/10 or high alloy. For CuNi the limit is flow velocity, plus temperature and idle periods; for the stainless grades it is chloride content via the PREN. The pressure rating decides neither.
Engine room and propulsion systems
Exhaust headers, cooler bundles, fuel and lube oil lines: headers, coils and closing pieces to drawing, matched to the engine installed.
Components to drawing
Spools, headers, closing pieces and special flanges supplied ready to install, packed in erection sequence. In block assembly every weld not made on board is an hour gained.
Chain of evidence
Heat number, mill certificate and test report per item, tied to the order. The records travel with the goods, not weeks later.
Confidentiality and export
Drawings stay inside the project and are made available only to those involved in the order. Export classification is settled before we quote, not before we ship.
Defence and naval – frequently asked questions
Have you supplied naval projects before?
Not so far – we would rather say that up front than afterwards. What we can supply are the grades, standards and acceptance levels naval shipbuilding calls for; whether a specific item runs through us is something we check per enquiry against material, standard, acceptance and date.
What acceptance is usual in naval shipbuilding?
As a rule inspection certificate 3.2 to EN 10204, that is with survey and countersignature by a surveyor of the classification society. The timing matters: notify before the base material is ordered, not just before production starts – otherwise the 3.2 on the pipe has already been missed. A certificate with a surveyor cannot be produced after the fact.
Shipbuilding standard or EN 1092-1 – which flanges belong on board?
Shipbuilding has its own flange standards: DIN 86029 (PN 10) and DIN 86030 (PN 16) are slip-on flanges pushed over the pipe and welded; DIN 86041 is the welding flange for tank walls, sea chests and overboard connections. Form and mating dimensions differ from EN 1092-1. What counts is the build specification: for shipboard systems it normally calls for the shipbuilding series, while for areas such as machinery spaces it expressly calls for shore standards. Order against the specification and you get parts that do not fit.
How long must the documentation stay available?
For the life of the ship, and for naval units that is regularly over thirty years. So it is filed per item: heat number, mill, certificate and test report, tied to the order. A blanket confirmation covering one delivery helps nobody twenty years later.
How do you handle confidentiality and export control?
Drawings and specifications are treated as confidential and made available only to those involved in the order; we sign a non-disclosure agreement before the enquiry. Whether a part classes as a dual-use or a military item is settled before we quote – under the EU dual-use regulation (EU) 2021/821 or the EU common military list and Austrian foreign trade and war material law.
Send your drawing – we will clarify the rest together
A drawing, bill of materials or short description is enough to get started. If already available, the following details help us prepare your quotation quickly.
- Drawing or specification, under NDA on request
- Material and standard: shipbuilding standard or land-based standard
- Classification society and required level of acceptance
- Quantity, assemblies and date
- Traceability per item, export control classification
Defence and naval supply
Tell us what it is about – plant, medium, temperature. We come back with a proposal, a price and a date.