Stainless steel pipes intended for use in systems made with press fittings must follow the UNI EN 10312 standard. The AISI 304 stainless steel pipe (EN 1.4301) and AISI 316 (EN 1.4401) steels with the relatively low carbon or stabilized variants are mainly used by virtue of their characteristics of:
- Corrosion resistance
- Mechanical strength
In any case, it is always necessary to carefully check the supply specifications before using the 304 stainless steel tube.
Ferritic stainless steel
It has lower carbon content than the martensitic. A particularly heat-resistant type contains 26% chromium. Other elements present are molybdenum, and aluminum which are used to increase resistance to hot oxidation.
The yield point is very low and, since it is not possible to perform heat treatments due to the absence of critical points. But recrystallization or hardening is carried out. It is advisable not to heat it above 850 °.
The basic properties of is Ferritic stainless steel:
- Moderate resistance to corrosion, which increases with the percentage of chromium;
- Magnetizable; not temperable and to be always used after annealing;
- The weldability is poor since the material that is overheated undergoes the enlargement of the crystalline grain due to the chromium.
The most common uses of A672 Pipe are in low-quality crockery or cutlery, sinks, and building finishes. In thin sheets. They are also used for coatings, plates for naval decks, spillways, chain conveyors, smoke extractors, and dust collectors.
Carbon steel tubes
Carbon steel pipes intended for use in systems made with press fittings must follow the UNI EN 10305-3 standard.
Due to the lower corrosion resistance, they are mostly used where the risk of internal corrosion (closed-circuit systems) or external aggression (systems not exposed to the weather) are limited or negligible. These tubes are particularly appreciated in applications where the economic factor is of particular importance.
Are stainless steel systems absolutely corrosion-proof or do they have any weak points?
The AISI 316L stainless steel used for the FRABOPRESS 316 fittings has very high corrosion resistance characteristics. On the other hand, high concentrations of chlorine or salts, brackish environments, and/or high temperatures can trigger decay phenomena of the steel.
Seamless stainless steel tube
The tubes without stainless steel welding are obtained by hot rolling, extrusion, or a combination of both processes. The subsequent processing can be by cold plastic deformation by rolling or drawing.
The stainless steel pipes are generally supplied with a “pickled” surface finish in bars of length between 5.5 and 6.5 meters.
Commercially, the production is in AISI 304 / 304L or AISI 316 / 316L stainless steel.
How to choose best Stainless Steel Condenser Tubes manufacturers in India?
Stainless Steel Condenser Tubes manufacturers in India is those which are responsible for providing the high quality stainless steel product. In India there are many carbon steel seamless pipe suppliers. But before buying product from them one must make sure about the company.