Shells intended for the reconditioning, upon arrival at the company, are deposited in a special dedicated area. Once a control of the documentations has been performed, a unique bar code is assigned to each of the shells so that it can be traced during subsequent processing steps.

At a later time, a first visual control is executed in order to check pitting, flashy anomalies on welds, dents, corrosion, alterations in shape or various malformations.


In case of success of the initial inspection and once the accessories have been dismantled, before any other work, a reclamation of the tank is performed, according to all the standards provided by current regulations both for safety and for environment matter.
Later, the tanks are assigned to a work program.


Potential elimination of the bottom outlet (in case of processing tanks from the outside of the ground to underground), repair or replacement prisoners, cap and hook soldering, lug dismantling, installation of protective caps.


To enable the shells to the next stages of processing some steps are performed: an internal visual inspection of the tank (as far as possible), the ultrasonic control of welds with an angled probe, the ultrasonic thickness gauge control with qualified operator NDT 2nd level, the pre-blasting to verify via a second visual inspection any hidden faults from the paint, a potential elimination of the bottom outlet (in case of processing tanks from the outside of the ground to underground) and finally the hydraulic test.

During the emptying of the tank occurs the absence of residual water within the same. All tests performed are recorded using handheld computer.


Since 2007, SINCO Ltd. has a new and innovative sandblasting system and fully automated paint, using paint powder with thermosetting epoxy resins with low environmental impact and with no loss of product in the environment.
The sandblasting seeks to obtain a degree of roughness SA 2.5 (measured with a profilemeter specially calibrated) in all surfaces of the tank.
The painting operations are distinguished by type of tank.

·        Tanks Above Ground

Zinc coating with a minimum thickness of 40 µm
Apply a coat of anti-rust primer with a minimum thickness of 40 µm
Applying a coat of white paint (RAL 9010) with a minimum thickness of 40 µm

·        Underground tanks

Punching with the serial number
Finish with epoxy powder paint with a minimum thickness 500μ dry film on the entire surface of the tank and control the thickness of the paint layer with appropriate instrumentation
At the end of the operations of painting, a cleaning of threaded joints it is carried out with a wire brush and the replacement of seals.


SINCO srl fits only components of new construction and the best brands. Following the assembly of the accessories is performed pressurization of the tanks to 7 bar for 24h, by controlling the endurance of the components with soapy water and the subsequent purge with inert gas (nitrogen).


Underground tanks

For underground tanks, a turret of watertight valve protection and electrical tape has mounted, connecting the anode and electrode with subsequent execution of proof sealing of the roof unit seal. Also, the dielectric continuity with special instrumentation to 5 kv and recorded evidence on the handheld computer is checked. Where provided, the support base of reinforced concrete tanks is mounted.
Finally, the combination of tanks to the valves via barcode is performed. Progressively they proceed to INAIL testing (ex ISPSEL) with a release of the documentation supporting the matriculation book (exemption, OE approval, ten-year, valve certificate, etc.).


Finished containers shall are stored in designated areas, separate for customer and type, to be ready for the next shipment to the customer.


Sinco Srl is qualified to design, manufacture, final inspection and testing of safety valves for LPG.


Sinco Srl organizes regular courses for installers of LPG tanks.

Contact us for more information by filling out the form.

    Autorizzazione al trattamento dei dati personali (D. Lgs 196 del 30/06/2003)