Boiler making
In boiler making the date hangs on the documentation, not on the steel. We supply boiler components to drawing – with the certificate acceptance demands and the marking that saves time on site.
What sets boiler making apart from other pipework
A boiler is pressure equipment of the highest category. Every pressure-bearing part needs unbroken material evidence, every weld a qualified procedure, and in the end the file has to be complete – otherwise there is no acceptance, even if the boiler is technically finished. That is why in boiler making price decides less often than whether traceability and documentation run along from the start. Water-tube boilers fall under EN 12952, shell boilers under EN 12953.
What we supply for it
Every part to your drawing, with material certificate and documentation.
Boiler tubes rarely arrive on site in mill lengths. We supply them…
The plate in which the boiler tubes end
Headers collect and distribute steam or water in the boiler and in the…
Bent tube strings for the hottest part of the boiler
The gas-tight wall of the furnace
Bent tube runs that take up or give off heat
Typical materials
The grade follows medium, temperature and pressure. A data sheet exists for every grade.
Standards and codes
| Area | Code |
|---|---|
| Water-tube boilers | EN 12952, part 3 design and calculation |
| Shell boilers | EN 12953, part 3 design and calculation |
| Pressure equipment | Directive 2014/68/EU, category by pressure and volume |
| Materials | EN 10216-2 seamless creep-resistant, EN 10217-2 welded, EN 10028-2 plate |
| Welding | EN ISO 3834-2, procedures to EN ISO 15614-1, welders to EN ISO 9606-1 |
| Evidence | EN 10204 certificate 3.1 or 3.2, weld maps, inspection records |
Typical tasks
Tube set for the outage
The shutdown is on the clock. Boiler tubes arrive cut to length, bevelled and marked by item number – on site people erect, they do not sort.
New build on a schedule
Headers, tube sheets and tube banks interlock. We match delivery dates to your erection sequence instead of dropping everything at once.
Material evidence without a gap
Heat marking is transferred before cutting and reapplied to every section. Each piece stays linked to its certificate.
Choosing the creep-resistant grade
From 16Mo3 to P91 the design temperature decides. We settle the grade with you and supply the data sheet along with it.
Boiler making – frequently asked questions
EN 12952 or EN 12953 – which applies to us?
EN 12952 covers water-tube boilers, where the water is inside the tubes and the flue gas passes outside. EN 12953 covers shell boilers, such as the classic three-pass boiler. The construction decides, not the size.
When is a 3.2 certificate needed instead of 3.1?
When an independent body carries out acceptance – a notified body, an expert or the purchaser’s representative. The 3.1 is issued by the works itself. The difference costs time, so it belongs in the order, not in final acceptance.
Up to what temperature does 16Mo3 serve?
In practice to about 500 °C. Above that creep strength falls off markedly and 13CrMo4-5, 10CrMo9-10 or, at high parameters, X20CrMoV11-1 and P91 come into question. The design governs, not rules of thumb.
Can you deliver in stages following the erection sequence?
Yes, and in boiler making that usually makes more sense than one complete delivery. Tell us the erection order and we split the deliveries accordingly – it relieves your lay-down area on site.
What do you need for a quotation?
Boiler type and code, drawing or parts list, tube sizes and wall thicknesses, material grades, the marking you want, the date and the required certificate to EN 10204.
Boiler making supply
Tell us what it is about – plant, medium, temperature. We come back with a proposal, a price and a date.