Superheater coils and tube sheets: special parts for boiler & power plant
In boiler and power plant construction, standard parts are not enough. Superheater coils and tube sheets are manufactured to drawing – from creep-resistant materials.
Superheater coils
Superheater coils are bent tube strings in which steam is heated beyond the saturated-steam temperature. They are made of creep-resistant boiler tubes such as 16Mo3, 13CrMo4-5 or 10CrMo9-10, which permanently withstand heat and internal pressure. They are manufactured to drawing – with defined bend radii and spacings.
Tube sheets & drilled plates
The tube sheet is the plate in which the boiler tubes end. In a three-pass boiler the flue gas passes through three passes; the tubes are rolled into or welded into the drilled tube sheet. The hole pattern – number, diameter and pitch of the holes – is manufactured exactly to specification.
Rolling-in or welding-in
In rolling-in, the tube end is expanded in the hole and pressed into a friction-locked fit; in welding-in it is additionally welded. Which variant is suitable depends on pressure, temperature and maintenance concept.
Material and certification
We supply creep-resistant grades with an inspection certificate 3.1 to EN 10204 and complete traceability – important for acceptance and operational safety in the power plant.
Frequently Asked Questions
What material are superheater coils made of?
From creep-resistant boiler tubes such as 16Mo3, 13CrMo4-5 or 10CrMo9-10, which permanently withstand high temperatures and internal pressure.
What is a tube sheet in a three-pass boiler?
The drilled plate in which the boiler tubes end. The tubes are rolled into or welded into the hole pattern.
Do you need exactly these parts?
Grade, size, pressure rating and quantity are enough – you usually receive your quote the same day, with an inspection certificate 3.1 on request.
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