I stainless steel pipes submersible pumps are critical components that operate under extreme conditions: submerged in water, under pressure, for years without maintenance. This technical guide on stainless hoses submersible pumps shows you all the basic requirements for optimal selection.
Submersible pumps represent one of the most demanding applications for stainless steel pipes. These components operate completely submerged in water, often tens of meters deep, subjected to high pressures, continuous thermal cycling and the presence of suspended particulate matter. The pump's outer jacket, made of stainless steel tubing, must ensure flawless performance for years without the possibility of maintenance.
For over thirty years Special Tubes partners with leading Italian manufacturers of submersible pumps, having developed a range of stainless steel submersible pump hoses specifically designed for this application.
The pipe intended to become the liner of a submersible pump must meet simultaneous requirements that require specialized manufacturing skills in the processing precision.
Dimensional tolerances: outer diameter must meet centesimal tolerances to ensure fit with seals and motor components. Ovalities, eccentricities and straightness compromise sealing and generate vibration in operation.
Weld quality: the longitudinal seam must be perfectly smooth internally so as not to interfere with the engine cooling flow. Externally, it must resist hydrostatic pressure without failure, according to the European standards EN.
Surface finish: the outer surface, in contact with well water, should be smooth enough to minimize the adhesion of lime deposits. Straightness: pipes should be perfectly straight for insertion into the well without abnormal friction.
Production dedicated to the pump sector includes pipes with diameters from 60 to 139mm, thicknesses from 0.5 to 1.5mm, in AISI 304 and AISI 316L steel. Standard lengths range from 3000 to 6000mm, with the possibility of cutting to size. See our catalog products For full specifications.
Each diameter is available in a plain configuration or with end beading, machined with dedicated equipment. The beading allows coupling with covers and flanges without the need for welding. Rolled threads for mechanical connections are available in pitches from 2.5 to 3.5 mm.
In the production cycle of a submersible pump, the jacket tube is handled numerous times. Each step poses a risk to the surface: scratches can compromise the seals, create corrosion trigger points, or alter mating dimensions.
La PVC protection applied by Special Tubes accompanies the tube along the entire chain, being removed only at the customer's request. The transparent film allows all dimensional control operations without removal.
The choice of steel grade depends on the composition of the water. AISI 304 is adequate for fresh water with limited chloride content. AISI 316L offers superior strength in brackish waters or coastal wells. As indicated by the World Stainless Association, choosing the correct grade is critical to the durability of the component.
Special Tubes can provide 3.1 certificates according to EN 10204 with chemical analysis and mechanical properties, essential documentation for manufacturers operating in regulated markets. The quality control guarantees the conformity of each batch.
The relationship with submersible pump manufacturers goes beyond simply supplying components. Special Tubes operates as a reliable technical partner, supporting customers in defining optimal specifications for stainless steel submersible pump tubes, solving application problems and developing custom solutions. Dedicated warehousing enables quick deliveries on standard references.
For more information on stainless hoses submersible pumps, contact us.
SPECIAL PIPES S.R.L.
STAINLESS STEEL PIPE CONSTRUCTION
L. Galvani Street, 5
46029 Suzzara (MN)
VAT number. 02660250206
REA NUMBER MN - 270171